Question 1

Which of the following best describes the process of parthenogenesis, as seen in some reptiles and insects?

Accepted Answer

Offspring develop from unfertilized eggs through mitosis, resulting in clones of the parent.

Question 2

During the human menstrual cycle, what is the primary function of the hormone progesterone after ovulation?

Accepted Answer

To maintain and further prepare the endometrium for possible implantation of an embryo.

Question 3

A patient presents with infertility and a hysterosalpingogram reveals that both Fallopian tubes are blocked. Which of the following best explains why this condition leads to infertility?

Accepted Answer

The egg and sperm cannot meet, preventing fertilization from occurring.

Question 4

Which of the following is a key difference between the estrus cycle and the menstrual cycle in mammals?

Accepted Answer

In the estrus cycle, the uterine lining is reabsorbed if fertilization does not occur, while in the menstrual cycle, it is shed through menstruation.

Question 5

A man undergoes a vasectomy as a permanent method of birth control. Which of the following best describes the expected outcome?

Accepted Answer

Sperm will no longer be present in the ejaculate, but seminal fluid will still be released.

Question 6

Which of the following best explains why hormonal birth control pills prevent ovulation?

Accepted Answer

They create a negative feedback loop that inhibits the release of FSH and LH from the pituitary gland.

Question 7

A woman is diagnosed with polycystic ovary syndrome (PCOS). Which of the following best describes how PCOS can lead to infertility?

Accepted Answer

Multiple immature follicles accumulate, preventing the release of a mature egg.

Question 8

Which of the following sexually transmitted infections (STIs) is caused by a virus and can increase the risk of cervical cancer?

Accepted Answer

Human papillomavirus (HPV)

Question 9

A couple is undergoing in vitro fertilization (IVF). Which of the following steps is unique to IVF compared to natural conception?

Accepted Answer

Fertilization of the egg by sperm occurs outside the body in a laboratory.

Question 10

Which of the following best explains why a ruptured ectopic pregnancy is a medical emergency?

Accepted Answer

It can cause severe internal bleeding due to the rupture of blood vessels in the Fallopian tube or other tissues.

Question 11

Which of the following imaging techniques is most commonly used to monitor fetal development during pregnancy?

Accepted Answer

Ultrasound (sonogram)

Question 12

A patient is found to have benign prostatic hyperplasia (BPH). Which of the following symptoms is most likely explained by the anatomical location of the prostate?

Accepted Answer

Weak urine stream due to compression of the urethra.

Question 13

Which of the following is a major advantage of using Doppler ultrasound over light microscopy for diagnosing inflammation in the male reproductive system?

Accepted Answer

Doppler ultrasound can detect increased blood flow in real time without the need for invasive tissue sampling.

Question 14

Which of the following best explains why only one sperm is needed to fertilize an egg, despite hundreds of millions being released during ejaculation?

Accepted Answer

Most sperm do not survive the journey through the female reproductive tract, and only one can penetrate the egg's outer membrane.

Question 15

Which of the following best describes the feedback mechanism that regulates testosterone production in males?

Accepted Answer

High testosterone levels signal the brain to reduce GnRH, LH, and FSH production, maintaining hormonal balance.

Question 16

A woman is found to have a luteal phase of only 8 days. Based on the normal menstrual cycle, why might this result in infertility?

Accepted Answer

The endometrium may not be maintained long enough for successful implantation of the embryo.

Question 17

Which of the following is a real-world example of asexual reproduction by fragmentation?

Accepted Answer

A sea star regenerates a new individual from a broken arm.

Question 18

Which of the following best explains why women have a 'biological clock' for reproduction?

Accepted Answer

Females are born with a finite number of oocytes, and the number and quality decline with age.

Question 19

Which of the following best describes the main function of the corpus luteum after ovulation?

Accepted Answer

It secretes progesterone and estrogen to maintain the endometrium for possible implantation.

Reproduction: Anatomy, Physiology, and Clinical Concepts

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