Question 1

Which of the following best describes the function of transverse tubules (T-tubules) in skeletal muscle fibers?

Accepted Answer

They transmit action potentials deep into the muscle fiber, ensuring synchronized contraction.

Question 2

A patient presents with high blood pressure. Which of the following factors is most likely contributing to the increased mean arterial pressure (MAP)? Use the formula $$ MAP = CO 	imes TPR $$ where $$ CO  is $$cardiac output and $$ TPR  is $$total peripheral resistance.

Accepted Answer

Increased cardiac output and increased total peripheral resistance

Question 3

Which of the following is the primary function of surfactant in the alveoli?

Accepted Answer

To decrease surface tension and prevent alveolar collapse during exhalation

Question 4

A patient with pernicious anemia is unable to absorb vitamin B12. Which digestive enzyme or factor is most likely deficient?

Accepted Answer

Intrinsic factor

Question 5

Which of the following best explains the Frank-Starling law of the heart?

Accepted Answer

The strength of ventricular contraction increases with increased end-diastolic volume.

Question 6

A patient is experiencing metabolic acidosis. Which of the following compensatory mechanisms is most likely to occur?

Accepted Answer

Increased respiratory rate to expel CO$$_2$$

Question 7

Which immunoglobulin is most abundant in the blood and provides the majority of antibody-based immunity against pathogens?

Accepted Answer

IgG

Question 8

A patient with heart failure has reduced perfusion to tissues. Which of the following is the most direct consequence of decreased tissue perfusion?

Accepted Answer

Decreased oxygen delivery and increased risk of tissue hypoxia

Question 9

Which hormone is responsible for stimulating red blood cell production in response to hypoxia?

Accepted Answer

Erythropoietin

Question 10

A patient is diagnosed with SIADH (Syndrome of Inappropriate Antidiuretic Hormone secretion). Which of the following laboratory findings would you expect?

Accepted Answer

Hyponatremia and decreased urine output

Question 11

Which of the following best describes the role of the SRY gene in embryonic development?

Accepted Answer

It triggers the formation of testes and male sexual differentiation.

Question 12

During the menstrual cycle, which hormone peaks just prior to ovulation?

Accepted Answer

Luteinizing hormone (LH)

Question 13

Which of the following is a function of platelets in hemostasis?

Accepted Answer

Initiating the clotting cascade by adhering to damaged blood vessels

Question 14

A patient with chronic obstructive pulmonary disease (COPD) has impaired pulmonary ventilation. According to Dalton's Law, how does this affect the partial pressure of oxygen ($$ P_{O_2$} ) in $$the alveoli?

Accepted Answer

It decreases $$ P_{O_2$}  in $$the alveoli.

Question 15

Which of the following best describes the role of ADH (antidiuretic hormone) in the kidneys?

Accepted Answer

It increases water reabsorption in the collecting ducts.

Question 16

Which of the following is a function of the pancreatic beta cells?

Accepted Answer

Secretion of insulin to decrease blood glucose

Question 17

Which of the following best describes the process of opsonization in the immune response?

Accepted Answer

Coating of pathogens with antibodies to enhance phagocytosis

Question 18

A patient is experiencing vomiting and diarrhea due to an acid-base disorder. Which disorder is most likely present?

Accepted Answer

Metabolic alkalosis

Question 19

Which of the following is the correct sequence of events in the cross-extensor reflex?

Accepted Answer

Stimulation of the extensor muscle on the opposite side, inhibition of the flexor muscle on the same side

Question 20

Which of the following cells is responsible for the production of testosterone in the testes?

Accepted Answer

Interstitial (Leydig) cells

Comprehensive Study Guide: Anatomy & Physiology Key Topics

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드