Question 1

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

Accepted Answer

Returning interstitial fluid to the bloodstream and providing immune defense

Question 2

Lymph is primarily composed of which of the following?

Accepted Answer

Plasma proteins, water, and white blood cells

Question 3

A patient has a blockage in their thoracic duct. Which region of the body would most likely experience lymphatic fluid accumulation (edema)?

Accepted Answer

Left arm, left leg, and lower body

Question 4

Which vessel is responsible for absorbing dietary fats in the small intestine?

Accepted Answer

Lacteal

Question 5

Macrophages in the lymphatic system primarily function to:

Accepted Answer

Phagocytose pathogens and present antigens

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

Accumulation of toxins and pathogens in tissues

Question 8

In the spleen, what is the main function of the red pulp?

Accepted Answer

Filtration and removal of old erythrocytes

Question 9

The thymus is most active during which stage of life, and what is its primary function?

Accepted Answer

Childhood; maturation of T lymphocytes

Question 10

Reticular fibers in lymphatic organs serve which 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

Larynx

Question 12

Pulmonary gas exchange occurs at which location?

Accepted Answer

Alveoli

Question 13

Which specialized tissue makes up the majority of the respiratory system and facilitates gas exchange?

Accepted Answer

Simple squamous epithelium

Question 14

Which cells produce mucus in the respiratory tract?

Accepted Answer

Goblet cells

Question 15

What is the function of the larynx?

Accepted Answer

Voice production and airway protection

Question 16

Chemoreceptors that sense changes in $$CO_2$$ and $$O_2$$ levels are located primarily in which regions?

Accepted Answer

Carotid bodies and aortic bodies

Question 17

Surfactant is produced by which cells in the lungs, and what is its primary function?

Accepted Answer

Type II alveolar cells; reduce surface tension

Question 18

Boyle's Law states that:

Accepted Answer

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

Question 19

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

Accepted Answer

Increased $$CO_2$$ concentration

Question 20

A collapsed lung (pneumothorax) occurs when:

Accepted Answer

Intrapleural pressure equals atmospheric pressure

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

Study Guide - Practice Questions