Which of the Following Statements About Epithelial Cells and Epithelial

question 57

Multiple Choice

Which of the following statements about epithelial cells and epithelial transport is correct?

• A)Epithelial cells are polarized
• B)Epithelial cells lining the small intestine have Na, K-ATPase pumps only in their basolateral membranes
• C)The "active" component of active transport across epithelial cells occurs only from the lumen side into the cells
• D)Both epithelial cells are polarized and epithelial cells lining the small intestine have Na, K-ATPase pumps only in their basolateral membranes are correct
• E)Both epithelial cells are polarized and the "active" component of active transport across epithelial cells occurs only from the lumen side into the cells are correct

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Definitions:

Synapse

A junction between two nerve cells, where impulses pass by diffusion of a neurotransmitter.

Thyroid Gland

An endocrine gland located in the neck that produces hormones regulating metabolism, energy generation, and growth.

Thyroxin

A hormone produced by the thyroid gland that regulates metabolism, energy generation, and growth and development; also known as thyroxine or T4.

Neurotransmitters

are chemicals that transmit signals across a synapse from one neuron to another in the nervous system.