Question 1

Which of the following best describes the primary function of the respiratory system?

Accepted Answer

To facilitate the exchange of oxygen and carbon dioxide between the atmosphere and the blood

Question 2

During pulmonary ventilation, which gas law explains the inverse relationship between the volume of the thoracic cavity and the pressure within the lungs?

Accepted Answer

Boyle's Law: $$P_1V_1 = P_2V_2$$

Question 3

Which structure is the first airway branch that contains smooth muscle and cuboidal epithelial cells, and is part of the conducting zone?

Accepted Answer

Bronchioles

Question 4

A patient presents with difficulty breathing and inflammation of the pleura. Which condition is most likely?

Accepted Answer

Pleurisy

Question 5

Which of the following best explains why oxygen diffuses from the alveoli into the pulmonary capillaries during external respiration?

Accepted Answer

The partial pressure of oxygen is higher in the alveoli than in the capillaries

Question 6

Which of the following is NOT a way carbon dioxide is transported in the blood?

Accepted Answer

Bound to plasma proteins as oxyhemoglobin

Question 7

A person with type A blood has which of the following on their erythrocytes?

Accepted Answer

Agglutinogen A and agglutinin B

Question 8

Which phase of hemostasis involves the transformation of fibrinogen into a fibrin mesh?

Accepted Answer

Coagulation

Question 9

A woman who is Rh-negative becomes pregnant with an Rh-positive fetus. What is the risk if she is exposed to Rh-positive blood during delivery?

Accepted Answer

She may develop anti-Rh antibodies, risking hemolytic disease in future pregnancies

Question 10

Which of the following best describes the pathway of blood through the heart starting from the right atrium?

Accepted Answer

Right atrium → right ventricle → pulmonary trunk → lungs → left atrium → left ventricle → aorta

Question 11

Which of the following is a characteristic unique to cardiac muscle fibers compared to skeletal muscle fibers?

Accepted Answer

They are connected by intercalated discs

Question 12

Which sequence correctly represents the electrical excitation pathway in the heart?

Accepted Answer

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

Question 13

Which type of blood vessel has the thickest tunica media and is most responsible for maintaining blood pressure and continuous blood flow?

Accepted Answer

Elastic arteries

Question 14

Which of the following best describes how substances move across capillary walls?

Accepted Answer

By diffusion, filtration, and osmosis

Question 15

A patient with chronic obstructive pulmonary disease (COPD) is likely to experience which type of hypoxia?

Accepted Answer

Hypoxemic hypoxia

Question 16

Which factor would increase the release of oxygen from hemoglobin to the tissues?

Accepted Answer

Increased partial pressure of carbon dioxide ($$P_{CO_2$})$$

Question 17

If a person’s blood pressure is measured as 140/90 mmHg, what does the 90 mmHg represent?

Accepted Answer

Diastolic pressure

Question 18

Which of the following would most likely cause a decrease in blood pressure?

Accepted Answer

Decreased peripheral resistance

Question 19

Which leukocyte is primarily responsible for combating parasitic infections and is elevated in allergic reactions?

Accepted Answer

Eosinophil

Question 20

A patient is admitted with a myocardial infarction. Which of the following best describes what has occurred?

Accepted Answer

A region of heart muscle has died due to lack of blood supply

Comprehensive Study Notes: The Respiratory, Cardiovascular, and Blood Systems

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드