Question

In: Anatomy and Physiology

5. Which of the following is the function of the acrosome of the sperm? a. fuses...

5. Which of the following is the function of the acrosome of the sperm?

a. fuses with the chromosomes of the egg b. propels the sperm

c. contains the mitochondria of the sperm d. digests the coating of the secondary ooctye

e. fuses with the endometrium

6. The muscular layer of the uterus is the

a. peritoneum b. stratum basale c. stratum functionalis d. endometrium

e. myometrium

7. The stratum basale and stratum functionalis are divisions of the

a. ovary b. endometrium c. myometrium d. corpus luteum e. zona pellucida

8. Which of the above must sperm penetrate to enter the secondary oocyte?

Expert Solution

Answer:

Answer 5. Option D (digests the coating of the secondary oocyte)

Explanation: Acrosome is the structure which is formed at the apex of the spermatozoa and it is derived from the golgi bodies.The structure contains a number of the hydrolytic enzymes which are collectively called as the sperm lysins and they help in dissolving the different coatings present on the surface of the secondary oocyte so as to ensure the fertilization between the male and the female gamete

Answer 6. Option E (Myometrium)

Explanation: The middle most layer of the uterus in human females is called as the myometrium. The other two layers are the perimetrium (outermost) and the endometrium (inner most). The myometrium of the uterus is made of the smooth muscles which are involuntary in nature and they stimulate the uterine contractions within the uterus of the females. It is due to these uterine contractions that the spermatozoa are able to reach the fallopian tubes for fertilization, and also thee contractions helps in the process of parturition that is gradual movement of the baby downwards thus enabling them to be released to the outside world

Answer 7. Option B (Endometrium)

Explanation: The endometrium of the uterus which is the inner most layer is having two divisions; namely the stratum basale and the stratum functionale.

These different divisions are meant for the reformation of the endometrium as the layer undergoes periodic shedding during the menstrual cycle. Also, the during the pregnancy the endometrium needs to be thickened so as to provide a cushion to the developing fetus and protect it from getting dessicated

Answer 8. Option E (Zona pellucida)

Explanation: Zona pellucida is a protective layer made of the proteins present over the surface of the secondary oocyte. Its function is to provide protection to the secondary oocyte. So upon the arrival of the spermatozoa; the acrosomal reaction takes place which results in the dissolution of the protective membranes surrounding the secondary oocyte and facilitating the process of fertilization resulting in the formation of a zygote

Sydney Mullin answered 1 year ago

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