Question 1

Which of the following best describes the function of the spleen in the lymphatic system?

Accepted Answer

It filters blood, removes old or damaged red blood cells, and initiates immune responses.

Question 2

A histology slide shows a structure with a cortex containing lymphoid follicles and a medulla with medullary cords. Which lymphatic organ is most likely being observed?

Accepted Answer

Lymph node

Question 3

During normal inspiration, which two muscles are primarily responsible for increasing thoracic volume?

Accepted Answer

External intercostals and diaphragm

Question 4

Which equation correctly represents the calculation of vital capacity ($$VC) in $$respiratory physiology?

Accepted Answer

$$VC = TV + IRV + ERV$$

Question 5

If $$P_{pul} ($$intrapulmonary pressure) is less than $$P_{atm} ($$atmospheric pressure), what is the direction of airflow?

Accepted Answer

Air flows into the lungs.

Question 6

Which histological feature distinguishes the trachea from a bronchiole?

Accepted Answer

Presence of hyaline cartilage rings

Question 7

A patient with damage to the parietal pleura would most likely experience which of the following?

Accepted Answer

Loss of lubrication between lung and chest wall, increasing risk of pneumothorax

Question 8

Which structure is NOT part of the portal triad in the liver?

Accepted Answer

Central vein

Question 9

Which layer of the alimentary canal is primarily responsible for absorption of nutrients?

Accepted Answer

Mucosa

Question 10

Which digestive enzyme is secreted by the pancreas and is responsible for breaking down proteins in the small intestine?

Accepted Answer

Trypsin

Question 11

A positive Benedict’s test for carbohydrate digestion is indicated by which color change?

Accepted Answer

Blue to orange/red

Question 12

Which of the following best describes the function of goblet cells in the small intestine?

Accepted Answer

Secretion of mucus to protect and lubricate the intestinal lining

Question 13

During lipid digestion, the color change of Phenol Red indicator from red to yellow suggests which of the following?

Accepted Answer

Decrease in pH due to fatty acid production

Question 14

Which equation correctly represents the calculation of total lung capacity ($$TLC$$)?

Accepted Answer

$$TLC = VC + RV$$

Question 15

Which of the following is a function of Peyer’s patches in the small intestine?

Accepted Answer

Immune surveillance and protection against pathogens

Question 16

A histology slide of the stomach shows simple columnar epithelium, gastric pits, and glands. Which layer is being observed?

Accepted Answer

Mucosa

Question 17

Which of the following best describes the role of the hepatic portal vein?

Accepted Answer

Carries nutrient-rich blood from the digestive tract to the liver

Question 18

Which test and color change would indicate a positive result for protein digestion using Biuret solution?

Accepted Answer

Biuret solution turns from blue to pink

Question 19

Which of the following structures increases surface area for air filtration and humidification in the nasal cavity?

Accepted Answer

Nasal conchae

Question 20

A patient’s lung histology shows thin-walled sacs surrounded by capillaries. Which structure is most likely being observed?

Accepted Answer

Alveoli

A&P II Lab Exam 2 Study Guide: Lymphatic, Respiratory, and Digestive Systems

Study Guide - Practice Questions

Study Guide - Flashcards