Question 1

Which structure in the male reproductive system is primarily responsible for maintaining the testes at a temperature lower than the rest of the body, and why is this important for sperm production?

Accepted Answer

Scrotum; because sperm production requires a temperature slightly below core body temperature

Question 2

During spermatogenesis, which sequence correctly describes the progression of cell types from diploid to haploid?

Accepted Answer

Spermatogonia (2n) → Primary spermatocyte (2n) → Secondary spermatocyte (n) → Spermatids (n) → Sperm (n)

Question 3

Which accessory gland in the male reproductive system secretes fructose to provide energy for sperm, and what is the physiological significance of this secretion?

Accepted Answer

Seminal vesicle; it supplies energy for sperm motility

Question 4

A patient presents with infertility due to low sperm count. Which hormone, produced by the anterior pituitary, is most directly responsible for stimulating Sertoli cells to enhance sperm formation?

Accepted Answer

Follicle-stimulating hormone (FSH)

Question 5

If the negative feedback loop controlling testosterone is disrupted and inhibin production decreases, what is the likely effect on blood testosterone levels?

Accepted Answer

Testosterone levels will increase due to lack of inhibition of LH and FSH release

Question 6

Which layer of the uterine wall is responsible for contractions during labor and expansion during pregnancy?

Accepted Answer

Myometrium

Question 7

During the menstrual cycle, a surge in which hormone triggers ovulation, and what is the underlying feedback mechanism?

Accepted Answer

LH; positive feedback from rising estrogen levels

Question 8

A woman is using a combination oral contraceptive pill. Which hormones are present in the pill, and how do they prevent pregnancy?

Accepted Answer

Progesterone and estrogen; they inhibit FSH and LH release, preventing ovulation

Question 9

Which of the following best explains why intrauterine devices (IUDs) are effective at preventing pregnancy?

Accepted Answer

They create mild chronic inflammation in the uterus, preventing fertilization or implantation

Question 10

A patient with pelvic inflammatory disease (PID) is at increased risk for infertility. What is the primary mechanism by which PID causes infertility?

Accepted Answer

PID causes scarring and blockage of the oviducts, preventing egg transport

Question 11

Which sexually transmitted disease is caused by a protozoan and is characterized by frothy, foul-smelling vaginal discharge in females?

Accepted Answer

Trichomoniasis

Question 12

A newborn develops a severe eye infection after passing through the birth canal of a mother with an untreated STD. Which bacterial STD is most likely responsible?

Accepted Answer

Gonorrhea

Question 13

Which hormone is secreted by the chorion after fertilization and is detected by pregnancy tests?

Accepted Answer

Human chorionic gonadotropin (hCG)

Question 14

A patient is diagnosed with tertiary syphilis. Which organ systems are most likely to be affected at this stage?

Accepted Answer

Nervous and cardiovascular systems

Question 15

Which of the following birth control methods provides some protection against sexually transmitted diseases (STDs)?

Accepted Answer

Condoms

Question 16

A couple is considering in vitro fertilization (IVF) due to blocked oviducts. Which step is essential in IVF before embryo transfer?

Accepted Answer

Harvesting immature eggs from the woman

Question 17

Which equation best represents the chromosomal change during meiosis in spermatogenesis?

Accepted Answer

$$2n \rightarrow n$$

Question 18

A woman experiences painful cramping during menstruation due to prostaglandin production. What is the medical term for this condition?

Accepted Answer

Dysmenorrhea

Question 19

Which vaccine is recommended for both boys and girls at age 11 or 12 to prevent certain types of cancer caused by a sexually transmitted virus?

Accepted Answer

HPV vaccine (Gardasil or Cervarix)

Human Biology: The Reproductive System (Chapter 16) – Anatomy & Physiology Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard