Q: A patient presents with a heart rate of 80 beats per minute and a stroke volume of 70 mL. What is the cardiac output in liters per minute?

$$CO = 80 \times 70 = 5600 mL/$$min = 5.6 L/min

Question 1

Which of the following best describes the primary function of erythrocytes in human blood?

Accepted Answer

Carrying oxygen from the lungs to tissues and removing carbon dioxide

Question 2

A patient with type AB blood receives a transfusion of type O blood. Which of the following statements is correct regarding the compatibility of this transfusion?

Accepted Answer

Type AB blood can receive type O blood because type O has no A or B antigens.

Question 3

Which equation correctly represents the calculation of cardiac output ($$CO) in $$the human heart?

Accepted Answer

$$CO = HR 	imes SV$$

Question 4

A patient presents with a heart rate of 80 beats per minute and a stroke volume of 70 mL. What is the cardiac output in liters per minute?

Accepted Answer

$$CO = 80 	imes 70 = 5600 mL/$$min = 5.6 L/min

Question 5

Which of the following best explains why oxygen is required for cellular respiration?

Accepted Answer

Oxygen acts as the final electron acceptor in the electron transport chain.

Question 6

During inspiration, which muscles are primarily responsible for increasing thoracic volume?

Accepted Answer

Diaphragm and external intercostal muscles

Question 7

Which of the following statements about lymph nodes is correct?

Accepted Answer

Lymph nodes filter lymph and are sites of immune cell activation.

Question 8

A patient is exposed to a pathogen for the first time. Which type of immune response will be activated, and what is its characteristic?

Accepted Answer

Primary immune response; slower and less robust than secondary response

Question 9

Which of the following best describes the role of the pancreas in digestion?

Accepted Answer

It secretes digestive enzymes into the small intestine to break down macromolecules.

Question 10

Which formula correctly represents the calculation of Body Mass Index (BMI)?

Accepted Answer

$$BMI = \frac{weight\ (kg)}{$$height^2$$\ (m^2$)}$$

Question 11

A patient has a plasma osmolarity of 300 mOsm/L and a urine osmolarity of 1200 mOsm/L. What does this indicate about the kidney's ability to concentrate urine?

Accepted Answer

The kidneys are effectively concentrating urine.

Question 12

Which of the following best describes the function of antidiuretic hormone (ADH) in the urinary system?

Accepted Answer

ADH increases water reabsorption in the kidneys, reducing urine output.

Question 13

Which of the following statements about meiosis is correct?

Accepted Answer

Meiosis results in four genetically unique haploid cells.

Question 14

Which organ is primarily responsible for the absorption of nutrients during digestion?

Accepted Answer

Small intestine

Question 15

A patient is experiencing metabolic acidosis. Which of the following compensatory mechanisms will the body use to restore pH balance?

Accepted Answer

Increase respiratory rate to expel more $$CO_2$$

Question 16

Which of the following best describes the difference between innate and adaptive immunity?

Accepted Answer

Innate immunity provides immediate, non-specific defense; adaptive immunity is specific and develops over time.

Question 17

Which of the following equations correctly represents the relationship between partial pressure, concentration, and solubility of a gas in a liquid (Henry's Law)?

Accepted Answer

$$C = k 	imes P$$

Question 18

Which of the following is a correct statement about the role of insulin in metabolism?

Accepted Answer

Insulin promotes glucose uptake by cells and stimulates glycogen synthesis.

Question 19

Which of the following best describes the process of filtration in the nephron?

Accepted Answer

Blood pressure forces water and solutes from the glomerulus into Bowman's capsule.

Question 20

Which of the following correctly describes the path of sperm from its formation to ejaculation?

Accepted Answer

Seminiferous tubules → epididymis → vas deferens → urethra

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