Q: Which of the following formulas correctly represents the relationship between tissue organization levels in the human body?

$$\text{Cells} \rightarrow \text{Tissues} \rightarrow \text{Organs} \rightarrow \text{Organ Systems}$$

Question 1

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

Accepted Answer

The ECM provides tensile and compressive strength, directs cell placement, and regulates cell development and survival.

Question 2

A patient with Marfan syndrome has a defect in the gene coding for fibrillin-1. Which of the following is a direct consequence of this defect?

Accepted Answer

Impaired distribution and anchoring of elastic fibers in the ECM.

Question 3

Which cell junction type is most important for preventing the passage of substances between adjacent epithelial cells, such as in the lining of the intestine?

Accepted Answer

Tight junctions

Question 4

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

Accepted Answer

Its thin, single layer facilitates rapid diffusion of gases and nutrients.

Question 5

A tissue sample shows tightly packed cells with little ECM, forming a continuous sheet lining a body cavity. Which tissue type is this most likely to be?

Accepted Answer

Epithelial tissue

Question 6

Which of the following formulas correctly represents the relationship between tissue organization levels in the human body?

Accepted Answer

$$	ext{Cells} ightarrow 	ext{Tissues} ightarrow 	ext{Organs} ightarrow 	ext{Organ Systems}$$

Question 7

Which of the following is a function of collagen fibers in the ECM?

Accepted Answer

Providing tensile strength and resistance to tension and pressure.

Question 8

A researcher observes cells joined by desmosomes and tight junctions, forming a barrier that is both mechanically strong and impermeable. Which tissue type is most likely being observed?

Accepted Answer

Epithelial tissue

Question 9

Which of the following best describes the function of gap junctions in cardiac muscle tissue?

Accepted Answer

They allow electrical signals and ions to pass rapidly between adjacent cells, coordinating contraction.

Question 10

Which of the following cell shapes is correctly matched with its description?

Accepted Answer

Columnar: elongated, rectangular cells

Question 11

A tissue sample from the trachea shows multiple layers of cells with varying heights, giving the appearance of stratification. Which epithelial type is this?

Accepted Answer

Pseudostratified epithelium

Question 12

Which of the following is NOT a function of epithelial tissue?

Accepted Answer

Contraction and movement

Question 13

Which of the following best explains why connective tissue is able to resist compression?

Accepted Answer

It contains proteoglycans in the ECM that attract water and form large aggregates.

Question 14

Which of the following is a correct statement about muscle tissue?

Accepted Answer

Muscle tissue is specialized for contraction and movement.

Question 15

Which of the following best describes the function of reticular fibers in connective tissue?

Accepted Answer

They form a meshwork that supports cells and ground substance.

Question 16

Which of the following equations correctly represents the percentage of collagen fibers in the ECM if they make up 20-25% of the total protein content?

Accepted Answer

$$	ext{Collagen Percentage} = \frac{	ext{Collagen Protein}}{	ext{Total ECM Protein}} 	imes 100$$

Question 17

Which of the following is a distinguishing feature of nervous tissue compared to other tissue types?

Accepted Answer

It contains specialized cells that generate, send, and receive electrical signals.

Question 18

A histology slide shows a basement membrane composed of a basal lamina and reticular fibers. Which tissue type is most likely present above this membrane?

Accepted Answer

Epithelial tissue

Question 19

Which of the following best describes the function of desmosomes in epithelial tissue?

Accepted Answer

They anchor cells together, increasing resistance to mechanical stress.

Question 20

Which of the following is a correct application of histology in medical practice?

Accepted Answer

Identifying tissue abnormalities to diagnose diseases such as cancer and infections.

Tissues: Structure, Function, and Classification in Human Anatomy & Physiology

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