300+ TOP Human Physiology Interview Questions [REAL TIME]

1. What Is Man?

Man or Homo Sapien is the most developed primate, and the highest creature in the evolutionary series.

2. What Is The Minimum Percentage Of Oxygen Required In The Atmosphere For The Survival Of Man?

6.9%

3. Who Is Considered As The ” Father Of Genetics”?

Gregor Mendel

4. Who Is Considered As The Father Of Medical Science?

Hippocrates

5. When Does The New Born Baby First Breath?

When is begins to cry.

6. Which Disease Is Known As The Silent Killer?

Blood Pressure

7. What Happens To The Blood Pressure When A Person Becomes Older?

Increases.

8. How Many Times Does A Heart Beat Every Day?

100,000 times.

9. Who Has More Bones: A Child Or An Adult?

Children have more bones than adults. In adults, bone fuse together.

10. When Did Dentistry Become A Recognised Profession?

In the 19th Century.

11. Which Fluid Secreted By The Liver Aids Digestion?

Bile

12. How Much Air Can The Lungs Hold?

3 litres (5 pt) of air.

13. Which Country Has More Hospitals Than Any Other?

China. In 1989 there was reported to be 61,929 hospitals

14. Can You Name The Horny Substance In Nails, Hair And Skin?

Keratin

15. Can You Name The Female Organ In Which A Baby Develops?

A baby develops in the uterus, or womb.

16. What Is The Main Function Of Genes?

Protein synthesis.

17. Which Doctor Founded Psychoanalysis, A Treatment For Illness?

Sigmund Freud

18. What Is The Function Of Arteries?

They carries blood from the heart around the baby.

19. Which Is The Bony Cage That Protects The Chest Organs?

Rib cage protects the chest organs.

20. Why Did Doctors Apply Bloodsucking Leeches To Their Patients?

In old times doctors believed that too much blood was a cause of disease.

21. In How Many Directions Can The Knee Joint Bend?

In can only bend forwards and backwards

22. How Many Muscles Does The Average Adult Use When Going For A Walk?

Over 200.

23. Which Intestine Is Longer: The Small Intestine Or The Large Intestine?

The small intestine.

24. Rupture Of The Blood Vessels And Bleeding Occurs Due To The Lack Of Which Vitamin?

Vitamin K

25. How Heavy Is The Human Head?

The Head weight around 4 kg.

26. Which Vitamin Helps The Blood To Clot?

Vitamin K

27. What Is The Difference Between A Local Anaesthetic And A General Anaesthetic?

A local anaesthetic numbs a part of the body, but a general anaesthetic makes a patient unconscious.

28. In Which Year Was The Syringe First Used To Inject Drugs Directly Into The Blood?

1853, devised by Charles Piavaz in France.

29. How Many Bones Are There In The Human Body?

There are 206 bones in the human body. The longest bone is the thigh bone femur and the smallest is the stirrup bone stapedius, one of the auditory ossicles in the middle ear.

30. What Is The Heart?

The heart is the muscular organ which collects and pumps blood around the body.

31. What Are Lungs?

The lungs are the factory in where the blood is purified with help of the oxygen present in the air we breath.

32. What Is Brain?

Brain is the centre of the nervous system and co-ordinator of all the body’s conscious and unconscious activities. It is a mass of nerve tissues protected by the skull. It contains a hundreds of millions of cells.

33. The Average Weight Of The New-born Child?

2.6 k.g.

34. What Is The Hardest Substance In The Human Body?

Tooth enamel is the hardest substance in the human body.

35. What Is Mean By “identical Twins”?

The babies born out of an ovul divided into two after fertilization.

36. Who Compared The Human Cell With The Factory?

George Gamo.

37. Which Substance Regulate Chemical Action In The Body?

Enzymes

38. Which Organ In The Body Produces The Largest Quantity Of Enzymes?

Liver.

39. The Gland Which Produces The Enzyme Parathormone?

parathyroid

40. Express The Body Temperature In The Celsius Scale?

36.9°C

41. Who First Produce The Artificial Gene?

H.G. Khorana.

42. The Membrane Which Covers The Heart?

Pericardium

43. The Number Of Chromosomes In The Human Cells?

23 pairs

44. How Many Muscles Are There In The Human Body?

Six hundred and thirty nine (639)

45. Which Is The Largest Muscle In The Human Body?

The largest muscle is the buttock muscle gluteus maximus

46. What Is The Function Of Spinal Cord?

It carries the messages from the brain to various parts of the body.

47. Which Is The Part Of The Brain That Controls Motor Function?

Cerebellum cortex

48. The Nervous System Which Controls The Functioning Of The Body At Sleep?

Autonomic nervous system

49. The Centre Inside The Heart Which Induces Heart Beats?

Pacemaker

50. A Chemical Which Retards Heart Beats?

Acetylcholine

51. The Thin Membrane Lining The Inside Of The Heart?

Endocardium

52. The Liquid Present In The Membrane Covering The Heart?

pericardial fluid.

53. What Is Meant By Neuron?

Nerve cell

54. The Chemical Produced In The Neuron?

Acetyl choline

55. What Is Responsible For The Transmission Of Messages In The Body?

Acetylcholine

56. Which American Scientist Has Worked On The Functions Of The Vagus Nerve In The Heart?

Ottolovi- in 1921

57. The Number Of Neurons In The Blood?

1400 crores

58. The Name Given To The Wave Motion Of Small Intestine?

Peristalsis

59. What Is A Chromosome?

The microscopic, thread like part of a cell which carries hereditary information in the form of genes.

60. What Is The Barr Body Test?

This test is used before the sports events to determine sex.

61. What Is Normal Pulse Beat?

The pulse rate of a woman is slightly faster than of man. It is between 70-72 beats per minute in men and 78-82 in women.

62. What Is The Life Of A Red Blood Cells?

The life of a red blood cell is 120 days. It contains Haemoglobin which carries oxygen through the body.

63. What Is The Major Component Of Bones And Teeth?

Calcium phosphate.

64. To Whom Is Dialysis Used?

To a patient suffering from kidney trouble.

65. In What Forms Are Carbohydrates Stored In The Liver?

Glycogen.

66. What Is The Principle Function Of Pile?

To regulate the process of digestion.

67. Which Are The Larges Veins In Th Human Body?

The vena cavas. Superior vena cava, drains blood from the head, chest and arms. Interior venecava receives blood from legs and abdomen.

68. Which Part Of The Body Secretes Hormone Insulin?

Islets of Langerhans. It regulates blood glucose level.

69. What Is Needed By A Patient Suffering From Diabetes?

insulin.

70. Which Harmone Helps The Conversion Of Sugar From The Food To Glucose?

insulin.

71. How Many Sweat Glands Are There In The Body?

There are approximately 2 million sweat glands. The sweat is composed of 99% water with a little sodium chloride.

72. What Is The Main Function Of The Small Intestine?

The main function of the intestine is the absorption of the carbohydrate, fat and protein from food which has first been broken down in to molecules by the action of enzymes.

73. What Is The Difference Between An Antiseptic And An Antibiotic?

The antiseptic stops the growth of germs and antibiotic destroys the germs completely.

74. Which Is The First Antibiotic?

The first antibiotic medicine is the Penicillin invented by Alexander Fleming.

75. What Is Myopia?

Myopia is an eye defect in which the object closer to the eye can be seen properly but the objects distant can be seen properly.

76. What Is Astigmatism?

In astigmatism one cannot see with clarity, the horizontal and vertical lines simultaneously.

77. Which Nerve Carries Impulses From The Eye To The Brain?

The optic nerve

78. Of What The Choroid Wall Of The Eye Is Made?

It is made of blood vessels and pigmented cells.

79. What Are Main Functions Of Bones?

In addition to giving shape and firmness to the body, it protects vital organs such as the brain, the spinal cord, the heart, and the lungs.

80. What Is Function Of Endocrine System?

The endocrine system adjust and correlates the various activities of the body, making adjustment to the body system by the changing demands of the external and internal environment.

81. What Is The Pituitary Gland?

It is often described as the master gland or the leader of the endocrine orchestra. It is reddish in colour, roughly oval in shape and is situated at the base of the brain.

82. How Many Lobes Are There In The Pituitary And Which Are They?

The pituitary has three lobes:

1. Anterior pituitary
2. The mid lobe of the pituitary
3. Posterior pituitary

83. What Is The Name Of The Secretions Of Ductless Gland?

Hormones

84. Which Are The Hormones Secreted By The Anterior Pituitary?

They are 1) growth hormone(Somatotrophic-harmone) 2) adrenocarticotrophic hormone (ACTH) 3)Thyrotropin stimulating hormone (TSH) 4) Prolactin (Lactogenic hormone) (FSH) and Luteinizing hormone (LH)

85. Which Hormone Is Involved In The Water Regulation Of The Body?

The hormone is involved in water regulation is ADH or Antidiuretic hormone released by the posterior pituitary.

86. How Do Hiccups Occur?

The hiccups occur when the diaphragm and the muscles between the ribs suddenly contract. This causes a sharp, uncontrollable, inhalation of air, which is unable to reach the lungs because of the muscles spasm has closed the windpipe.

87. What Are The Activities Of The Digestive System?

The five activities are ingestion, secretion, digestion, absorption and elimination.

88. What Are Carbohydrates?

They consist of carbon, hydrogen and oxygen. They are found in sugar, jams, cereals, bread, potatoes, fruit, vegetables and milk.

89. What Is The Function Of The Carbohydrates?

In the body they are utilized to provide energy and heat, and help to maintain the normal blood glucose level.

90. Which Are The Three Main Groups Of Carbohydrates?

They are monosaccharides, disaccharides and polysaccharides.

91. What Are Proteins?

Proteins are complex compounds containing compounds containing carbon, oxygen, nitrogen, sulphur and phosphorus. They are obtained mainly from meats, eggs, milk, cheese fish, cereals and certain vegetables.

92. What Are The Essentialities Of Protein?

They are essential for the repair of the body tissue, the maintenance of the somatic equilibrium between blood and tissue fluids and for providing energy and heat when there is an insufficient supply of carbohydrates.

93. Which Is The Food Content Not Stored Inside The Body?

Protein.

94. What Are The Main Protein?

They are albumin, globulin, gluten, gliadin, scleroprotein, protamine and histone.

95. What Are Importance Of The Fats (lipids)?

Fat is important in the diet not only for its high energy, but also it contains the fat soluble vitamins A,D,E and K and certain essential fatty acids.

96. What Are Vitamins?

They are organic compounds essential for life, health and growth. They are not eaten such as in the diet, but are widely dispersed in the food.

97. How Many Kinds Fo Vitamins Are There?

There are two groups of vitamins Fat-soluble vitamins and water-soluble vitamins.

98. Which Vitamin Is Stored In The Liver?

Vitamin A

99. Which Are Fat-soluble Vitamins?

Vitamin A. Vitamin-D (Calciferol), Vitamin-E (Tocopherol) and Vitamin K.

100. Which Are Water-soluble Vitamins?

Vitamin-B1 (Thiamine), Vitamin-B2 (Riboflavine), Nicotinamide, Vitamin-B6 (Pyridoxine), Pantothenic acid, Biotin, Folic acid (Pteroylglutamic acid), Vitamin-B12&VitaminS

101. Sunlight Is The Source Of Which Vitamin?

Vitamin-D

102. What Is Necessity Of Mineral Salts?

They are necessary in the diet for all body porcesses. Only a samll amount is needed.

103. How Calcium Is Used In The Human Body?

It is the chief constituen of teeth and bones. It is absorbed in the small intestine in the form of Vitamin-D. It plays an important part in the coagulation o fblood and in contraction of muscles.

104. What Is The Use Of Phosphate?

phosphate combines with calcium in the formation of bone and teeth and it helps to maintain the normal composition of body fluids.

105. What Is The Important Role Of Sodium?

Sodium is present mainly in tissue fluids and therefore play an important role in cell activity and in the fluid balance of the body.

106. Why Potassium Is Essential?

Potassium is essential component of all cells. It is also necessary for all the activity of cardiac, skeletal and smooth muscles.

107. What Is The Importance Of Iron In The Body?

Iron is the necessary for the formation of cytochromes that is involved in tissue oxidation. It is very essential for the formation of Haemoglobin.

108. What Is The Importance Of Iodine?

Hormones

109. Which Are The Diseases Caused By Vitamin Deficiency?

They are beri-beri, scurvy, rickets and night blindness.

110. What Is Difference Between Histology And Histopathology?

Histology is the microscopic study of normal tissues of the body and Histopathology is the microscopic study of tissues which are affected by disease.

111. What Is A Cell?

A cell is a mass of protoplasm enclosed within a membrane containing a subdivision, the nucleus.

112. What Is Nucleus?

The nucleus contains most of the genetic material of the cell. It is bounded by two membranes each rather similarly to cytoplasmic membranes.

113. What Are Chromosomes?

They are small thread-like bodies which are seen within nucleus, during cell division.

114. How Many Chromosomes Are There In A Body Cell?

23 pairs, one of each pair derived from father and the other from the mother.

115. What Are The Constituents Of Blood?

Blood consist of Plasma, erythrocytes (red blood cells), leukocyte (white blood cells) and thrombocytes (platelets).

116. What Is Plasma?

Plasma is a complex solution of proteins, salt and numerous substance and acts as a transport medium carrying its constituents to specialized organs of the body.

117. Which Was The First Molecular Disease To Be Detected?

Sickle cell Anaemia.

118. Which Gland Helps To Maintain The Calcium Content In The Blood?

parathyroid

119. What Are Erythrocytes?

These cells are seen under microscope as non nucleated, pale greenish-yellow, binocave discs. Its primary function is to transport oxygen from the lungs, via heart to the tissues. They normally survive in the blood stream for 120 days.

120. What Are Leukocytes (wbc)?

These are nucleated cells some of which are capable of amoeboid movement. They are present in normal blood in smaller numbers than red cells. Their main functions is to act as one of the body’s defences.

121. What Are Thrombocytes?

They are small non-nucleated oval or round cells. They are capable of sticking together and prevents bleeding by forming a physical barrier.

122. From Where The Cells Are Produced?

They are produced from the bone marrow.

123. What Is Coagulation?

The clotting of blood outside the body is called coagulation.

124. What Is Haemoglobin?

It is a large complex molecule. It is synthesized in the developing red cells and has an iron containing complex called haem.

125. Who First Explain The Theory Of Coagulation?

Morawitz in 1905.

126. Which Are The Four Main Groups Of Blood?

They are A, B, AB and O.

127. How Much Blood Does The Body Have?

An average blood has 5 litres of blood.

128. What Is The Normal Temperature Of The Body?

The normal temperature is 37°C or 98.4°F

129. Which Is The Disease Caused By The Over Activity Of The Thyroid Gland?

Exophathalmic Goitre.

130. Bcg Vaccination Is Done Against Which Disease?

Tuberculosis

131. Which Is The Disease Caused By The Acids In The Digestive Juices?

Peptic Ulcer.

132. Which Organ Is Considered As The Chemical Laboratory Of The Human Body?

Liver

133. Which Enzymes Are Contained In Pancreatic Juice?

Trypsin, Amylase and Lipase.

134. What Are The Constituents Of Saliva?

The saliva consist of water, mucin, mineral salts and ptyalin.

135. How Many Salivary Glands Are There?

There are three pairs of salivary glands are there.

136. Which Part Of The Body Is Called Pharynx?

The cavity between the mouth and tongue.

137. Which Is The Hormone Produced By Pyloric Glands?

Gastrin

138. Which Are The Three Parts Of Pharynx?

Nasopharynx, oropharynx and laryngo-pharynx.

139. Which Is The Enzyme That Converts Starch Into Maltose?

Ptyalin

140. What Is Allergy?

It is a specific hyper sensitivity to a substance which is harmless for the majority of members of the same species.

141. What Is Abscess?

Abscess is localized formation of pus in a cavity produced by the breakdown of tissues.

142. What Is Infection?

Invasion and injury of the tissues of the body by pathogenic organisms is called infection.

143. What Is Chemotherapy?

The treatment of disease by the administration of chemicals.

144. Who Is The First Test Tube Baby?

Lousie Joy Brown born in UK on july 25, 1978.

145. Who Is The First Indian Test Tube Baby?

Durga is the first Indian test tube girl

146. Who Was The Doctor Behind The Birth Of The First Indian Test Tube Baby In India?

Dr. Indira Hinduja

147. Which Disease Is Caused By Infection Of Hiv Virus?

AIDS

148. What Is The Name Of The Test For The Detection Of Aids?

Elisa test.

149. How Much Time Do A Man Breath In His Life Time?

If a man live to be 75, he will have breathed no less than 600 million times.

150. How Much Air We Breath In Our Life Time?

Adults take in about 0.5 litres (just under half a pint) of air with every breath everyday each person needs about 15,000 litres(530 cu.ft) of air. In a life time each person breath in about 400,000 cu meters (14 million cu.ft) of air.

151. Where Do We Have The Thickest Skin?

The thickest skin 0.3mm (0.12in) is on the soles of the feet.

152. How Big In A Human Stomach?

Human stomach allow us to eat a lot, but they are small when compared with those of animals, Human stomach holds about 1.5 litres (2.5 pints); where as a cow’s stomach holds about 180 litres (40 gallons)

153. How Much Time Does The Heart Of A Human Beat In A Life Time?

When a person is resting the heart beats about 70-80 times a minute. So it beats about 100,00 times a day, and if a person live to be 70 it will have to beat nearly 3,000 million times without stopping.

154. How Long Are The Blood Vessels?

Human body contains about 100,000 km (6.,000 miles) of blood vessels. Arteries take blood away from the heart while veins carry it back.

155. Which Are The Human Excretions?

All living things have to get rid of waste. Human excrete carbon dioxide and water through out lungs, nitrogen compounds, salts and water through urine, and some salt and water through sweat we also get rid of undigested parts of food but this is not true excretion, because undigested food never passes through our cells.

156. Who Discovered That Glucose, The Main Source Of Energy For The Body, Is Stored In The Liver?

The french scientist Claude Bernard (1813 – 1878)

157. What Is Called Immunity?

Once the body have been attacked by a certain bacterium, the immune system “remembers” its chemical make up. So, it can respond very quickly to a second attack. This is called immunity.

158. What Are Fixed Joints?

Some joints are locked together and cannot move. These are found between the bones that protect the brain, in the skull. When the skull first forms, its bones are separate. They gradually grow together.

159. How Do Our Muscles Work?

The muscles work by pulling (never pushing)on the bones of the skeleton, to which they are attached.

160. What Are Joints?

Joints are like hinges that join bones together and allow bending, twisting movements. The shoulder and hip joints have the best range movements.

161. How Many Teeth Do The Children Have?

They are born without teeth,young children have 20 milk teeth that are slowly replaced around the age of six until they have full set of 32.

162. What Are Senses?

Every human have five senses, each one giving important information. We see with out eyes, hear with our ears, taste with our tongue, smell with our nose and feel through our skin.

163. What Is The Weight Of The Brain?

1.4 kg (3 lb)

164. Why Food Is Cooked?

When food is cooked, the heat kills harmful germs. Cooked food is easier to digest, it also keeps longer and tastes nicer.

165. What Is The Average Height Of The Man?

The average adult measures between 5 feet 8 inches.

166. What Is The Life Cycle Of The Red Blood Cell?

Red blood cells live for one to four months, but in that time each red cell travels around the body upto 172,000 times, and in every second the bone narrow produces around 5 million new cells.

167. How Many Hairs Are Lost A Day?

About 30 to 60 hairs are lost every day. Each hair last from one to six years before the hair root withers and hair drops out.

168. What Is The Growth Rate Of The Hair?

The hair grows about 2.3 mm (0.09 in) a week, that is about 12 cm (4.75 in ) a year.

169. What Prevents Food From Going Into Lungs When A Man Swallows Food?

Although a man breathes air and swallows food through mouth, a flap of skin at the back of the throat, called the epiglottis, closes off the wind pipe when we swallow.

170. How Big Is The Lung Sack?

If all the tubes and little round air sacks in the lungs were laid out that they would cover a tennis court.

171. What Is A Heart-lung Machine?

It is a device which takes over heart and lung functions and maintains circulation and oxygen supply to the blood.

172. What Is Color Blindness?

It is a condition more common in men than women. It is characterized by inability to distinguish between colours, in particular red and green.

173. What Is Incubation Period?

It is a period between infection and appearance of symptoms.

174. Which Part Of The Heart Is A Pacemaker?

The part of the heart which originate contractions of the heart muscles. If it fails to work, an artificial pacemaker can be inserted.

175. What Is A Parkinson’s Disease?

Common nervous diseases with muscular tremors, weakness and stooping, usually found in old people. The mind is not affected.

176. What Is Radio Therapy?

It is the treatment of certain diseases using X-rays, radium or other radioactive substances.