Q: Which equation best represents the relationship between the proportion of cells to ECM in a tissue?

$$\text{Tissue type} \propto \frac{\text{Number of cells}}{\text{ECM}}$$

Q: Which equation would you use to calculate the total surface area covered by simple columnar epithelium in the small intestine, given the length $$L$$ and average circumference $$C of $$the intestine?

$$\text{Surface Area} = L \times C$$

Question 1

Which of the following best describes the primary function of the extracellular matrix (ECM) in connective tissue?

Accepted Answer

It gives strength to resist tensile and compressive forces, holds cells in place, and is essential for cell survival.

Question 2

Which equation best represents the relationship between the proportion of cells to ECM in a tissue?

Accepted Answer

$$	ext{Tissue type} \propto \frac{	ext{Number of cells}}{	ext{ECM}}$$

Question 3

Which of the following is NOT a major type of tissue in the human body?

Accepted Answer

Adipose tissue

Question 4

A patient suffers a burn that destroys the outer layer of skin. Which tissue type is primarily affected?

Accepted Answer

Epithelial tissue

Question 5

Which component of the ECM is primarily responsible for resisting stretching forces?

Accepted Answer

Collagen fibers

Question 6

Which of the following cell junctions is most important for preventing substances from passing between epithelial cells?

Accepted Answer

Tight junctions

Question 7

Which type of epithelial tissue is best suited for rapid diffusion of gases in the lungs?

Accepted Answer

Simple squamous epithelium

Question 8

Which of the following best explains why the skin is resistant to friction and mechanical injury?

Accepted Answer

Keratinization of the outer layers of stratified squamous epithelium

Question 9

Which equation would you use to calculate the total surface area covered by simple columnar epithelium in the small intestine, given the length $$L$$ and average circumference $$C of $$the intestine?

Accepted Answer

$$	ext{Surface Area} = L 	imes C$$

Question 10

A gland that secretes its product into a duct is classified as:

Accepted Answer

Exocrine gland

Question 11

Which of the following best describes the secretion mechanism of a holocrine gland?

Accepted Answer

Secretion by cell rupture and release of entire cell contents

Question 12

Which type of epithelial tissue lines the urinary bladder and allows it to stretch?

Accepted Answer

Transitional epithelium

Question 13

Which of the following is a function of goblet cells in epithelial tissue?

Accepted Answer

Secretion of mucus to protect and lubricate surfaces

Question 14

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

Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream; exocrine glands secrete products into ducts.

Question 15

Which of the following is a correct sequence of organization from smallest to largest?

Accepted Answer

Cell → Tissue → Organ → Organ system → Organism

Question 16

A researcher is studying the effect of a mutation that disrupts cell adhesion molecules (CAMs) in epithelial tissue. Which outcome is most likely?

Accepted Answer

Cells will detach from each other and the ECM, compromising tissue integrity.

Question 17

Which of the following best explains why simple cuboidal epithelium is found in kidney tubules?

Accepted Answer

It allows rapid diffusion and secretion due to its single layer and cube-shaped cells.

Question 18

Which of the following is a function of the ground substance in the ECM?

Accepted Answer

Acts as a medium for exchange of nutrients and waste between blood and cells

Question 19

Which type of epithelial tissue would you expect to find lining the esophagus, and why?

Accepted Answer

Stratified squamous epithelium, for protection against abrasion

Question 20

A patient with a genetic defect in collagen synthesis is most likely to experience problems with which tissue function?

Accepted Answer

Resistance to tensile forces in connective tissue

Introduction to Human Physiology: Tissue Types and the Extracellular Matrix

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