Question 1

Which of the following best describes the main function of simple squamous epithelium in the alveoli of the lungs?

Accepted Answer

Rapid diffusion of gases due to thin, flat cells

Question 2

A patient suffers a sunburn, and the damaged skin peels off in sheets rather than as individual cells. Which type of intercellular junction is primarily responsible for this phenomenon?

Accepted Answer

Spot desmosomes

Question 3

Which of the following is a characteristic unique to cardiac muscle tissue?

Accepted Answer

Intercalated discs containing gap junctions and desmosomes

Question 4

A tissue sample shows cells with large lipid droplets that push the nucleus to one side. Which type of connective tissue is this, and what is its primary function?

Accepted Answer

Adipose connective tissue; stores energy and insulates

Question 5

Which of the following best explains why cartilage heals more slowly than bone after injury?

Accepted Answer

Cartilage is avascular, so nutrients and waste removal rely on slow diffusion

Question 6

A gland releases its product by exocytosis without loss of cytoplasm. Which mode of secretion is this, and which gland is a classic example?

Accepted Answer

Merocrine secretion; salivary gland

Question 7

Which of the following best describes the structure and function of serous membranes?

Accepted Answer

They consist of a simple epithelium and areolar tissue, producing fluid to reduce friction between organs

Question 8

A tissue sample from the trachea shows a single layer of cells with nuclei at different heights and cilia on the apical surface. What is the correct classification of this epithelium?

Accepted Answer

Pseudostratified ciliated columnar epithelium

Question 9

Which connective tissue fiber type is most responsible for providing tensile strength to tendons and ligaments?

Accepted Answer

Collagen fibers

Question 10

A 65-year-old woman is diagnosed with osteoporosis. Which age-related tissue change is most directly responsible for her condition?

Accepted Answer

Reduction in bone strength due to decreased collagen and mineral content

Question 11

Which of the following best describes the process of inflammation following tissue injury?

Accepted Answer

Mast cells release histamine, causing vasodilation and increased permeability

Question 12

Which of the following equations best represents the relationship between tissue repair rate ($$R$$), metabolic rate ($$M$$), and age ($$A$$), assuming repair rate decreases with age and metabolism?

Accepted Answer

$$R = \frac{M}{A}$$

Question 13

A patient presents with swelling, redness, heat, and pain after a physical injury. Which phase of tissue response is occurring, and what is the primary purpose?

Accepted Answer

Inflammation; to increase blood flow and bring immune cells to the area

Question 14

Which of the following best explains why epithelial tissue is avascular?

Accepted Answer

It relies on diffusion from underlying connective tissue for nutrients and waste removal

Question 15

Which of the following is a correct pairing of a tissue membrane and its location?

Accepted Answer

Mucous membrane – lines the digestive tract

Question 16

A patient with vitamin C deficiency has weakened connective tissue. Which process is most directly affected?

Accepted Answer

Production of collagen fibers by fibroblasts

Question 17

Which of the following best describes the difference between endocrine and exocrine glands?

Accepted Answer

Exocrine glands secrete products through ducts; endocrine glands release hormones directly into the blood

Question 18

Which of the following best explains why skeletal muscle and axons are both referred to as 'fibers'?

Accepted Answer

They are both long and slender in shape

Question 19

A tissue sample contains irregularly shaped cells with many long projections, including some several centimeters long. Which type of cell is this most likely to be?

Accepted Answer

Neuron

Question 20

Which of the following best describes the function of fluids produced by serous membranes?

Accepted Answer

They lubricate surfaces to reduce friction between organs

Chapter 4: The Tissue Level of Organization – Essentials of Anatomy & Physiology

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