Epithelial Tissue Classification 1

Which statement best explains why simple squamous epithelium is suited for gas exchange in the alveoli and filtration in the renal glomerulus?

• It consists of multiple cell layers that provide strong protection against abrasion.

• Its single, thin layer of flat cells minimizes diffusion distance and allows rapid exchange across capillary and alveolar walls.

• Its cuboidal cells secrete surfactant to reduce surface tension.

• Its ciliated cells move mucus and trapped particles out of the airways.

Identify the structural feature that distinguishes simple epithelium from stratified epithelium in diagrams of epithelial tissue.

• Presence of multiple cell layers

• Cells lacking a basement membrane

• Single layer of cells

• Cells with no free surface

A histology diagram shows a lining composed of cube-shaped cells with spherical central nuclei forming a single layer around a tubular space. Which epithelial type is depicted, and what primary function does it facilitate?

• Stratified squamous; protection from abrasion

• Simple cuboidal; absorption and secretion

• Simple columnar; gas exchange

• Pseudostratified columnar; filtration

Which statement best describes the primary function of microvilli on epithelial cells?

• Propel mucus along epithelial surfaces

• Increase surface area for absorption

• Provide structural support against compression

• Facilitate cell-to-cell electrical signaling

Microvilli are likely to be abundant on which two epithelial types due to their absorptive roles?

• Stratified squamous epithelium and transitional epithelium

• Simple cuboidal epithelium (kidney tubules) and simple columnar epithelium (digestive tract lining)

• Pseudostratified ciliated columnar epithelium and stratified cuboidal epithelium

• Keratinized stratified squamous epithelium and simple squamous epithelium

Which feature best enables simple squamous epithelium to facilitate rapid diffusion and filtration?

• Tall, multilayered cells with microvilli

• Flat, single layer of cells with minimal barrier thickness

• Cube-shaped cells arranged in multiple layers

• Thick basement membrane with abundant connective tissue

A pathologist observes a thin lining of flat cells forming the alveolar walls and the inner surface of blood vessels. Which tissue is this, and which function most directly explains its presence in these locations?

• Simple columnar epithelium; secretion of digestive enzymes

• Stratified squamous epithelium; protection against abrasion

• Simple squamous epithelium; efficient diffusion of gases and solutes

• Transitional epithelium; stretching to accommodate volume changes

Which location is the best match for simple cuboidal epithelium based on its primary functions?

• Skin surface exposed to high abrasion

• Kidney tubules involved in absorption and secretion

• Esophageal lining specialized for protection

• Vaginal lining resisting mechanical injury

Which statement best explains how microvilli enhance epithelial function?

• They provide motility to move mucus across surfaces

• They are plasma membrane foldings that increase surface area for absorption

• They secrete digestive enzymes into the lumen

• They strengthen epithelia by forming tight junctions

In ciliated epithelium of the respiratory tract, what is the primary coordinated function of cilia working together with goblet cells?

• Secretion of digestive enzymes onto inhaled particles

• Transport of mucus containing trapped particles toward the pharynx

• Exchange of gases between air and blood capillaries

• Increase of surface area for nutrient absorption