Human Reproduction Chapter-Wise Test 4

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which cell type in the testes is responsible for supporting and nourishing developing sperm cells?

Leydig cells
Sertoli cells
Germ cells
Epididymal cells
2

Sertoli cells provide structural and nutritional support to developing sperm within the seminiferous tubules.

Which of the following best describes fetal circulation during pregnancy?

Fetal blood oxygenation occurs entirely in the lungs
The placenta is the primary organ for gas exchange
The ductus arteriosus directs oxygenated blood away from the heart
The foramen ovale is a permanent structure in the fetal heart
2

In fetal circulation, the placenta serves as the main organ for oxygenation and gas exchange since the lungs are non-functional.

During which phase of the menstrual cycle do estrogen levels peak?

Early follicular phase
Late follicular phase
Ovulatory phase
Luteal phase
2

Estrogen levels gradually rise during the follicular phase and peak in the late follicular phase, just before the LH surge triggers ovulation.

Which condition in males is defined as the complete absence of sperm in the ejaculate?

Oligospermia
Azoospermia
Asthenospermia
Teratospermia
2

Azoospermia is the condition where no sperm are present in the ejaculate, leading to infertility.

Which of the following is a characteristic feature of azoospermia in males?

Reduced sperm count
Absence of sperm in the ejaculate
Poor sperm motility
Abnormal sperm morphology
2

Azoospermia is defined as the complete absence of sperm in the ejaculate, a major cause of male infertility.

Which part of the uterus is shed during menstruation?

Myometrium
Perimetrium
Endometrium
Cervix
3

The endometrium, or the inner lining of the uterus, is shed during menstruation if no implantation occurs.

Which tissue layer of the uterus is responsible for the cyclic regeneration and shedding during the menstrual cycle?

Perimetrium
Myometrium
Endometrium
Serosa
3

The endometrium is the innermost layer of the uterus that undergoes cyclical regeneration and shedding during menstruation.

Which of the following events marks the initiation of the luteal phase in the menstrual cycle?

Menstruation
Ovulation
Follicular phase
Proliferative phase
2

Ovulation triggers the transition from the follicular phase to the luteal phase, during which the corpus luteum forms.

Which hormone, produced by the placenta later in pregnancy, plays a key role in preparing the maternal body for lactation?

Progesterone
Estrogen
Human placental lactogen (hPL)
Oxytocin
3

Human placental lactogen (hPL) is secreted by the placenta and helps prepare the breasts for lactation by altering maternal metabolism.

Which hormone is secreted in a pulsatile manner by the hypothalamus to regulate the reproductive axis?

Gonadotropin-releasing hormone (GnRH)
Luteinizing hormone (LH)
Follicle-stimulating hormone (FSH)
Prolactin
1

GnRH is released in pulses by the hypothalamus to stimulate the anterior pituitary to secrete LH and FSH, thereby regulating reproduction.

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