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 containing plasma, proteins, and white blood cells, derived from interstitial fluid

Question 3

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

Accepted Answer

Lymphatic collecting vessel

Question 4

A lacteal is found in the villi of the small intestine. Its primary function is:

Accepted Answer

Absorption of fatty acids and lipids

Question 5

Which of the following best describes the role of macrophages in the lymphatic system?

Accepted Answer

They phagocytize foreign particles and present antigens to lymphocytes

Question 6

MALT (Mucosa-Associated Lymphoid Tissue) is found in all the following locations EXCEPT:

Accepted Answer

Spleen in the abdominal cavity

Question 7

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

Accepted Answer

Edema and increased risk of infection

Question 8

In the spleen, red pulp is primarily responsible for:

Accepted Answer

Filtration of blood and removal of old erythrocytes

Question 9

The thymus is most active during which stage of life, and its main function is:

Accepted Answer

Childhood; maturation of T lymphocytes

Question 10

Reticular fibers in lymphatic organs serve which primary function?

Accepted Answer

Provide structural support for immune cells

Question 11

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

Accepted Answer

Nasal cavity

Question 12

Pulmonary gas exchange occurs at which location?

Accepted Answer

Alveoli

Question 13

The majority of the respiratory system is lined with which specialized tissue?

Accepted Answer

Pseudostratified ciliated columnar epithelium

Question 14

Which cells produce mucus in the respiratory tract?

Accepted Answer

Goblet cells

Question 15

Chemoreceptors that sense changes in $$CO_2$$ and $$O_2$$ levels are located primarily in:

Accepted Answer

The carotid and aortic bodies

Question 16

Surfactant is produced by which cells in the lungs, and its main function is:

Accepted Answer

Type II alveolar cells; reduce surface tension

Question 17

Boyle's Law states that:

Accepted Answer

Pressure and volume are inversely proportional: $$P 	imes V = 	ext{constant}$$

Question 18

Which of the following factors will increase the unloading of $$O_2$$ from hemoglobin at the tissues?

Accepted Answer

Increased $$CO_2$$ concentration

Question 19

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

Accepted Answer

Increased intrapleural pressure equalizing with atmospheric pressure

Question 20

Tidal volume is defined as:

Accepted Answer

The volume of air exchanged during normal, quiet breathing

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

Study Guide - Practice Questions