Human Anatomy MCQs focuses on “Male Genital Organs – Vesiculae Seminales & Ejaculatory Ducts”.
1. How many pairs of seminal vesicles are present?
A. 1
B. 2
C. 3
D. 0
Answer: A
Clarification: One pair of seminal vesicles is present. They are elongated muscular and sacculated glands present in the pelvis between bladder and rectum.
2. Sperm is nourished by a sugary fluid from the _____________
A. Cowper’s gland
B. Prostate gland
C. Seminal vesicle
D. Vas deferens
View Answer
Answer: C
Clarification: Seminal vesicle is a pair of simple tubular glands posteroinferior to the urinary bladder of some male mammals. It is located within the semen. They secrete a fluid that partly composes the semen.
3. Seminal vesicle produce ___________
A. Sperm cells
B. Testosterone
C. Fructose rich fluid
D. Estrogen
Answer: C
Clarification: The seminal vesicle secretes a significant proportion of the fluid that ultimately becomes semen. It is very rich in fructose content.
4. The function of fructose in semen is to __________
A. Provide an energy source for ATP production by sperm
B. Promote coagulation of semen in the female reproductive tract
C. Buffer acids in female reproductive tract
D. Inhibit the growth of bacterial in semen
View Answer
Answer: A
Clarification: Semen contains up to 11mmol/L of free fructose. It is the major energy source for the sperm cells in their ace for ovum. Hence the sperm contains fructose as the primary energy source and not glucose.
5. The seminal vesicles are located at ____________
A. Inferior to the prostate within urogenital tract
B. In kidneys
C. Within spermatic cord
D. Posterior and inferior to the urinary bladder in front of rectum
Answer: D
Clarification: It is a part of male reproductive system. It helps in making of sperms.
6. ______ adds fluid to sperm.
A. Seminal vesicle
B. Prostate gland
C. Bulbourethral gland
D. Ejaculatory duct
Answer: D
Clarification: Ejaculatory duct is about 2cm in length and is created with the duct of the seminal vesicle merges with vas deferens. They transport spermatozoa and fluids.
7. Which of the following structures makes up the most of the male urethral length?
A. Membranous urethra
B. Prostatic urethra
C. Ejaculatory duct
D. Spongy urethra
View Answer
Answer: D
Clarification: Spongy urethra is the longest part of male urethra, and is contained in a penis. It is about 15cm long.
8. The sperms acrosome ___________
A. Contains nutrients
B. Contains enzymes
C. Provide blood-testis barrier
D. Beats so that sperm can swim
Answer: B
Clarification: Sperm’s acrosome contains digestive enzymes. These enzymes break down the outer membrane of the ovum.
9. In response to parasympathetic stimulation _______
A. Spermiogenesis is encouraged
B. Ejaculation occurs
C. Blood flow increases to the penis
D. Vessels in the penis constrict.
View Answer
Answer: C
Clarification: Omega 3 fatty acids increase blood flow. Brain sends nerve impulses that increase blood flow to the penis.
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