Question 1

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

Accepted Answer

Return interstitial fluid to the bloodstream and provide immune defense

Question 2

Lymph is most accurately defined as:

Accepted Answer

A fluid derived from plasma that contains white blood cells, proteins, and cellular debris

Question 3

Which vessel does lymph enter immediately after leaving the lymphatic capillaries in the leg?

Accepted Answer

Lymphatic collecting vessel

Question 4

Lacteals are specialized lymphatic capillaries found in the:

Accepted Answer

Small intestine, where they absorb dietary fats

Question 5

Macrophages in the lymphatic system primarily function to:

Accepted Answer

Phagocytose foreign particles and present antigens to lymphocytes

Question 6

Which of the following is an example of MALT (Mucosa-Associated Lymphoid Tissue) and its location?

Accepted Answer

Peyer's patches in the small intestine

Question 7

If lymph nodes fail to function properly, which of the following is most likely to occur?

Accepted Answer

Edema due to impaired fluid drainage and increased risk of infection

Question 8

In the spleen, the red pulp is primarily responsible for:

Accepted Answer

Filtering and removing old or damaged red blood cells

Question 9

The thymus is essential for:

Accepted Answer

Maturation of T lymphocytes

Question 10

Reticular fibers in lymphatic organs serve to:

Accepted Answer

Provide structural support for immune cells

Question 11

Which of the following structures is part of the upper respiratory tract?

Accepted Answer

Larynx

Question 12

The respiratory zone is defined as the region where:

Accepted Answer

Gas exchange occurs between air and blood

Question 13

Pulmonary gas exchange occurs at the:

Accepted Answer

Alveoli

Question 14

Which cell type produces mucus in the respiratory system?

Accepted Answer

Goblet cells

Question 15

What is the function of surfactant in the lungs, and which cells produce it?

Accepted Answer

Reduces surface tension; produced by Type II alveolar cells

Question 16

Boyle's Law states that:

Accepted Answer

The volume of a gas is inversely proportional to its pressure

Question 17

Which equation represents Boyle's Law?

Accepted Answer

$$P 	imes V = k$$

Question 18

A drop in CO2 levels in the blood is detected by:

Accepted Answer

Chemoreceptors in the carotid and aortic bodies

Question 19

Which factor will increase the unloading of O2 from hemoglobin at the tissues?

Accepted Answer

Increased CO2 concentration

Question 20

A collapsed lung (pneumothorax) is most likely to result from:

Accepted Answer

Equalization of intrapleural and intrapulmonary pressures

Bio 211 Exam 3 Study Guide – Lymphatic & Respiratory System Guidance

Study Guide - Practice Questions