Colonization of the body is inhibited by

A. the shedding of skin cells.
B. the movement of mucus by cilia.
C. peristalsis.
D. the flushing action of the urinary tract.
E. All of the choices are correct.


E

Biology & Microbiology

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The _______________________ , which is part of the nervous system, is also recognized as a major endocrine organ because it produces several hormones

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Rats placed in isolated and unenriching environments become learning-impaired due to the:a

increased development of dendritic spines. b. lack of development of proper neurotransmitters. c. development of large numbers of glial cells. d. biochemical changes resulting in a heavier cerebral cortex. e. poor development of synaptic contacts.

Biology & Microbiology

What are male secondary sex characteristics in humans? Check all that apply.

A. increase in muscle mass B. decrease in testosterone levels C. deepening of voice D. decrease in body hair E. increase in facial hair

Biology & Microbiology

A fetus is born with cardiac defects, CNS malformations, microtia, and thymic hypoplasia. The fetus was exposed in utero to which of the following drugs?

A. Cocaine B. Isotretinoin C. Thalidomide D. Tobacco E. Valproic Acid

Biology & Microbiology