Question 1

Which of the following best explains why simple squamous epithelium is found lining the alveoli of the lungs and capillaries?

Accepted Answer

Its single layer of flat cells allows for rapid diffusion of gases and nutrients.

Question 2

A patient presents with a burn that is red, painful, and has blisters. Which type of burn is this, and what layers of skin are affected?

Accepted Answer

Second-degree burn; epidermis and part of the dermis are affected.

Question 3

Which of the following is a characteristic unique to epithelial tissue compared to other tissue types?

Accepted Answer

Is avascular but innervated, relying on diffusion from underlying tissues.

Question 4

A biopsy of a gland reveals that its secretions are released by exocytosis without loss of cellular material. Which type of gland is this?

Accepted Answer

Merocrine gland

Question 5

Which of the following best describes the function of cilia on pseudostratified columnar epithelium in the respiratory tract?

Accepted Answer

Sweep mucus and trapped particles out of the airways.

Question 6

A tissue sample from the urinary bladder shows cells that change shape from cuboidal to squamous as the bladder fills. What is this tissue called?

Accepted Answer

Transitional epithelium

Question 7

Which of the following is a function of stratified squamous epithelium in the skin?

Accepted Answer

Protection against abrasion and water loss

Question 8

A patient is diagnosed with basal cell carcinoma. Which layer of the skin is primarily affected, and what is the main risk factor?

Accepted Answer

Epidermis (basal layer); excessive UV radiation

Question 9

Which of the following best illustrates the principle of 'structure determines function' in epithelial tissues?

Accepted Answer

Simple cuboidal epithelium in kidney tubules allows for secretion and absorption due to its cube-shaped cells.

Question 10

Which of the following equations correctly represents the calculation of the percentage of body surface area burned using the 'Rule of Nines'?

Accepted Answer

$$Total\ burned\ area\ (\%) = Head\ and\ neck\ (9\%) + Each\ arm\ (9\%\ each) + Each\ leg\ (18\%\ each) + Anterior\ trunk\ (18\%) + Posterior\ trunk\ (18\%) + Perineum\ (1\%)$$

Question 11

Which of the following statements about glandular epithelium is correct?

Accepted Answer

Exocrine glands secrete their products into ducts that open onto surfaces or into body cavities.

Question 12

A tissue sample shows cells with microvilli on their apical surface. What is the most likely function of this tissue?

Accepted Answer

Absorption

Question 13

Which of the following best describes the difference between merocrine and holocrine modes of secretion?

Accepted Answer

Merocrine glands release their product by exocytosis, while holocrine glands release their product by cell rupture.

Question 14

A patient with a third-degree burn does not feel pain in the affected area. What is the most likely explanation?

Accepted Answer

The burn has destroyed the nerve endings in the skin.

Question 15

Which of the following is a real-world example of the protective function of keratinized stratified squamous epithelium?

Accepted Answer

The outer layer of the skin preventing water loss and resisting abrasion.

Question 16

Which of the following best explains why the inside of blood vessels is lined with simple squamous epithelium (endothelium)?

Accepted Answer

To allow smooth, frictionless flow of blood and exchange of materials.

Question 17

Which of the following is a correct pairing of tissue type and its primary function?

Accepted Answer

Muscle tissue: Contraction for movement

Question 18

A patient with a suspicious mole is evaluated using the ABCD method. What does the 'D' stand for, and why is it important?

Accepted Answer

'D' stands for 'Diameter'; moles larger than 6 mm may indicate melanoma.

Question 19

Which of the following best describes the role of goblet cells in pseudostratified columnar epithelium?

Accepted Answer

They secrete mucin, which forms mucus to trap particles.

Tissue: The Living Fabric – An Overview of the Four Major Tissue Types

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