Question 1

A histological slide of the trachea shows cilia, goblet cells, and pseudostratified columnar epithelium. What is the primary function of this epithelial arrangement in the trachea?

Accepted Answer

To trap and move particulates out of the respiratory tract via mucociliary clearance

Question 2

Which type of cartilage forms the majority of the tracheal rings, and what is its primary function?

Accepted Answer

Hyaline cartilage; to maintain an open airway and prevent collapse during inhalation

Question 3

A patient presents with difficulty swallowing and aspiration of food into the airway. Which structure is most likely malfunctioning?

Accepted Answer

Epiglottis

Question 4

Which of the following best describes the epithelial lining of the alveoli in the lungs, and why is this important for gas exchange?

Accepted Answer

Simple squamous epithelium; allows for rapid diffusion of gases

Question 5

During a laboratory exam, you are shown a model of the liver and asked to identify the structure that carries nutrient-rich blood from the digestive tract to the liver. Which structure should you select?

Accepted Answer

Hepatic portal vein

Question 6

Which of the following best describes the function of the lacteal found within an intestinal villus?

Accepted Answer

Absorption of dietary lipids into the lymphatic system

Question 7

A histological section of the esophagus reveals several layers, including a thick muscularis externa and a lining of stratified squamous epithelium. What is the primary advantage of this epithelial type in the esophagus?

Accepted Answer

It provides protection against abrasion from food boluses

Question 8

Which of the following structures is responsible for preventing food from entering the nasal cavity during swallowing?

Accepted Answer

Soft palate and uvula

Question 9

A patient has a blockage at the common bile duct. Which of the following consequences is most likely?

Accepted Answer

Impaired delivery of bile to the duodenum, leading to fat malabsorption

Question 10

Which of the following best describes the arrangement and function of the muscularis externa in the small intestine?

Accepted Answer

Inner circular and outer longitudinal layers; responsible for peristalsis and segmentation

Question 11

Which structure marks the transition between the small and large intestine and helps regulate the flow of intestinal contents?

Accepted Answer

Ileocecal valve

Question 12

A histological slide of the pancreas shows clusters of lighter-staining cells surrounded by darker acinar cells. What is the function of these lighter-staining clusters?

Accepted Answer

Endocrine secretion of hormones such as insulin and glucagon

Question 13

Which of the following best describes the function of the rugae in the stomach?

Accepted Answer

Allow the stomach to expand after the ingestion of food

Question 14

Which vessel carries oxygenated blood to the liver tissue itself?

Accepted Answer

Hepatic artery

Question 15

A patient with a damaged cricoid cartilage may experience which of the following complications?

Accepted Answer

Collapse of the airway below the larynx

Question 16

Which of the following is a unique feature of the large intestine compared to the small intestine?

Accepted Answer

Haustra formed by the taenia coli

Question 17

Which of the following best describes the function of the goblet cells found in the respiratory and digestive tracts?

Accepted Answer

Production of mucus for lubrication and protection

Question 18

A patient has a congenital defect resulting in the absence of the diaphragm. Which physiological process would be most directly affected?

Accepted Answer

Inhalation and exhalation (ventilation)

Question 19

Which ligament attaches the liver to the anterior abdominal wall and divides the right and left lobes?

Accepted Answer

Falciform ligament

Question 20

A patient with a tumor compressing the hilum of the lung may experience which of the following symptoms?

Accepted Answer

Reduced blood flow and airflow to the lung due to compression of bronchi and vessels

Study Guide: Respiratory and Digestive Systems (BIO 251 - Human Anatomy and Physiology II)

Study Guide - Practice Questions

Study Guide - Flashcards