Question 1

Which of the following best describes the primary function of lymphatic vessels in the human body?

Accepted Answer

They return excess interstitial fluid to the bloodstream and help transport immune cells.

Question 2

A patient has a blockage in their thoracic duct. Which of the following is the most likely consequence?

Accepted Answer

Accumulation of lymph in the lower body, leading to edema.

Question 3

Which of the following best explains why lymph nodes are strategically located throughout the body?

Accepted Answer

To filter lymph and provide sites for immune cell activation against pathogens.

Question 4

Which of the following is a key difference between diffuse and follicular lymphoid tissues?

Accepted Answer

Follicular lymphoid tissue contains germinal centers for B cell proliferation, while diffuse tissue does not.

Question 5

Which of the following best describes the role of MALT (Mucosa-Associated Lymphoid Tissue)?

Accepted Answer

It guards the body's mucosal entryways against pathogens.

Question 6

T lymphocytes mature in which organ, and what is the significance of this process?

Accepted Answer

Thymus; it enables T cells to become immunocompetent and self-tolerant.

Question 7

Which of the following is an example of a surface barrier that acts as the first line of defense in the immune system?

Accepted Answer

Keratinized skin and mucous membranes

Question 8

A patient is unable to mount an effective inflammatory response. Which innate internal defense is most likely impaired?

Accepted Answer

Phagocytosis by neutrophils and macrophages

Question 9

Which of the following best describes the function of antigen-presenting cells (APCs) in adaptive immunity?

Accepted Answer

They present processed antigens to T cells, initiating the adaptive immune response.

Question 10

Which antibody class is most abundant in plasma and is responsible for secondary immune responses?

Accepted Answer

IgG

Question 11

A patient receives a vaccine and develops immunity without experiencing the disease. This is an example of which type of immunity?

Accepted Answer

Artificial active immunity

Question 12

Which of the following equations correctly represents Boyle's Law, which explains the relationship between pressure and volume in the lungs?

Accepted Answer

$$P_1$$ $$V_1$$ = $$P_2$$ $$V_2$$

Question 13

During inspiration, which of the following events occurs as a result of volume changes in the thoracic cavity?

Accepted Answer

Intrapulmonary pressure drops below atmospheric pressure, causing air to flow into the lungs.

Question 14

A patient with emphysema has reduced lung elasticity. Which of the following best explains how this affects expiration?

Accepted Answer

Expiration becomes more difficult because the lungs cannot recoil properly.

Question 15

According to Dalton's Law, the total pressure of a gas mixture is equal to:

Accepted Answer

The sum of the partial pressures of each gas.

Question 16

Which of the following best describes how oxygen is primarily transported in the blood?

Accepted Answer

Bound to hemoglobin within red blood cells.

Question 17

A climber at high altitude experiences increased ventilation and heart rate. Which physiological process best explains this response?

Accepted Answer

Decreased oxygen partial pressure stimulates chemoreceptors, increasing respiratory rate.

Question 18

Which of the following is a major function of the upper respiratory system?

Accepted Answer

Warming, humidifying, and filtering incoming air.

Question 19

A patient with chronic bronchitis has difficulty clearing mucus from their airways. Which protective mechanism of the respiratory system is most likely impaired?

Accepted Answer

Ciliary escalator function in the trachea and bronchi.

Question 20

Which of the following best explains why carbon dioxide is transported in three different forms in the blood?

Accepted Answer

To maximize the amount of CO$$_2$$ that can be carried and efficiently removed from tissues.

Lymphatic and Respiratory Systems: Study Guide for Anatomy & Physiology

Guida di studio - Domande di pratica

Study guide - Flashcard