Natural Killer (NK) cells

A. are a type of plasma cell.
B. are a type of macrophage.
C. secrete enzymes that kill tumor or virus-infected cells.
D. promote inflammation.
E. are derived from B cells.


Answer: C

Anatomy & Physiology

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What makes a connective tissue "loose" or "dense"?

A) the viscosity of the ground substance B) the packing or volume of fibers C) the number of phagocytic cells D) the presence or absence of adipose cells E) the number of fibroblasts

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The deltoid is a prime mover of arm adduction

Indicate whether the statement is true or false

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What is a main function of the myenteric plexus?

A. It controls glandular secretion of the mucosa. B. It sends sensory information to the CNS through glossopharyngeal nerves. C. It stimulates bile production in the liver. D. It controls glandular secretion of the pancreas. E. It controls peristalsis.

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