Q: Which of the following equations correctly represents the calculation of glomerular filtration rate (GFR) using clearance?

$$GFR = \frac{U_x \times V}{P_x}$$

Question 1

Which of the following best describes the primary function of the vas deferens in the male reproductive system?

Accepted Answer

It transports sperm from the epididymis to the urethra during ejaculation.

Question 2

A patient presents with high blood pressure and low potassium levels. Laboratory tests reveal elevated aldosterone. Which of the following best explains the effect of aldosterone on the kidneys?

Accepted Answer

Aldosterone increases sodium reabsorption and potassium excretion in the distal tubules.

Question 3

Which hormone is primarily responsible for stimulating the Sertoli cells to support spermatogenesis?

Accepted Answer

Follicle-stimulating hormone (FSH)

Question 4

During the proliferative phase of the uterine cycle, which ovarian event is most likely occurring?

Accepted Answer

Maturation of the dominant (Graafian) follicle

Question 5

Which of the following best describes the effect of antidiuretic hormone (ADH) on the kidneys?

Accepted Answer

ADH increases water reabsorption in the collecting ducts.

Question 6

A patient with a pituitary tumor has decreased secretion of luteinizing hormone (LH). Which of the following is a likely consequence?

Accepted Answer

Decreased testosterone production by Leydig cells

Question 7

Which of the following correctly matches the hormone with its primary source and main effect?

Accepted Answer

Aldosterone – adrenal cortex – increases sodium reabsorption

Question 8

Which of the following equations correctly represents the calculation of glomerular filtration rate (GFR) using clearance?

Accepted Answer

$$GFR = \frac{U_x 	imes V}{P_x}$$

Question 9

Which of the following best describes the role of the sympathetic nervous system in micturition?

Accepted Answer

It inhibits contraction of the detrusor muscle and promotes contraction of the internal urethral sphincter.

Question 10

A patient is unable to concentrate urine and produces large volumes of dilute urine. Which hormone deficiency is most likely responsible?

Accepted Answer

Antidiuretic hormone (ADH)

Question 11

Which of the following events occurs during the secretory phase of the uterine cycle?

Accepted Answer

Endometrial glands secrete nutrients to prepare for implantation.

Question 12

Which of the following is the correct sequence of sperm development?

Accepted Answer

Spermatogonium → primary spermatocyte → secondary spermatocyte → spermatid → spermatozoon

Question 13

Which of the following best describes the effect of increased plasma osmolarity on ADH secretion?

Accepted Answer

ADH secretion increases, leading to increased water reabsorption.

Question 14

Which of the following is a correct correlation between the ovarian and uterine cycles?

Accepted Answer

During the follicular phase, the endometrium is in the proliferative phase.

Question 15

Which of the following best describes the mechanism of action of aldosterone in the nephron?

Accepted Answer

It increases the synthesis of sodium-potassium pumps in the distal tubule and collecting duct.

Question 16

A patient with a genetic mutation cannot produce FSH. Which of the following is a likely consequence?

Accepted Answer

Impaired spermatogenesis

Question 17

Which of the following best describes the role of the detrusor muscle during micturition?

Accepted Answer

It contracts to expel urine from the bladder.

Question 18

Which of the following is the correct formula for calculating net filtration pressure (NFP) in the glomerulus?

Accepted Answer

$$NFP = GHP - (CHP + COP)$$

Question 19

Which of the following best describes the effect of testosterone on the male reproductive system?

Accepted Answer

It stimulates the development of secondary sexual characteristics and supports spermatogenesis.

Question 20

Which of the following is a correct description of the mechanical, humoral, and climacteric phases of micturition?

Accepted Answer

Mechanical: detrusor contraction; Humoral: ADH action; Climacteric: age-related decline in bladder function

Chapters 26 & 28: Urinary and Reproductive Systems – Key Concepts and Vocabulary

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