Question 1

Which of the following best explains why compression stockings are recommended for airline pilots and cabin crew during long flights?

Accepted Answer

They provide external pressure on veins, aiding venous return and reducing edema.

Question 2

A patient presents with intermittent claudication and fainting spells when bending forward. An X-ray reveals a 'thumbnail sign' at the rim of the aorta. What is the most likely underlying cause?

Accepted Answer

Aortic calcification causing reduced blood flow to the brain.

Question 3

During ventricular systole, which heart sound is heard and what event causes it?

Accepted Answer

S1 ('Lub'), caused by closure of the atrioventricular (AV) valves.

Question 4

Which equation correctly calculates stroke volume (SV) in the cardiac cycle?

Accepted Answer

SV = EDV − ESV

Question 5

A patient has a blood pressure of 120/80 mmHg. What is their pulse pressure?

Accepted Answer

$$PulsePressure = 120 - 80 = 40\ mmHg$$

Question 6

Which of the following arteries is NOT a direct branch of the aortic arch?

Accepted Answer

Right subclavian artery

Question 7

In fetal circulation, which structure allows blood to bypass the lungs by connecting the pulmonary trunk to the aorta?

Accepted Answer

Ductus arteriosus

Question 8

Which vessel is formed by the union of the splenic vein and the superior mesenteric vein, and is responsible for delivering nutrient-rich blood to the liver?

Accepted Answer

Hepatic portal vein

Question 9

A patient with cyanosis is most likely experiencing which of the following?

Accepted Answer

Low oxygen levels in the blood (hypoxia)

Question 10

Which of the following best describes the function of the Circle of Willis?

Accepted Answer

It provides collateral circulation to the brain in case of arterial occlusion.

Question 11

Which of the following is a mixed gland, having both endocrine and exocrine functions?

Accepted Answer

Pancreas

Question 12

Which of the following arteries supplies the kidneys?

Accepted Answer

Renal arteries

Question 13

During blood pressure measurement, the first Korotkoff sound heard corresponds to which value?

Accepted Answer

Systolic pressure

Question 14

Which of the following is TRUE regarding pulmonary circulation compared to systemic circulation?

Accepted Answer

Pulmonary circulation's primary function is gas exchange, not meeting metabolic needs.

Question 15

Which hormone is produced by the adrenal glands and is involved in the body's stress response?

Accepted Answer

Cortisol

Question 16

A patient with a pulse deficit has a difference between the apical and radial pulse rates. What does this most likely indicate?

Accepted Answer

Cardiac impairment or low cardiac output

Question 17

Which of the following is the correct sequence for the conduction system of the heart?

Accepted Answer

SA node → AV node → Bundle of His → Bundle branches → Purkinje fibers

Question 18

Which of the following is a function of the liver related to blood composition?

Accepted Answer

Production of heme for oxygen transport

Question 19

Which artery is commonly used for blood pressure measurement in clinical practice?

Accepted Answer

Brachial artery

Question 20

Which of the following best describes the role of skeletal muscle in venous return?

Accepted Answer

Skeletal muscle contraction compresses veins, pushing blood toward the heart.

Comprehensive Study Notes: The Cardiovascular, Endocrine, Hematologic, Digestive, Renal, Musculoskeletal, and Respiratory Systems

Study Guide - Practice Questions

Study Guide - Flashcards