All of the following are true of neurons except that they
A) lack centrioles and cannot divide.
B) conduct a nervous impulse.
C) are composed of dendrites, a cell body, and an axon.
D) are a very specialized form of connective tissue.
E) are the longest cells in the body.
Answer: D
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Which of the following effects of aging is most vital to a person living in a hot, humid climate?
A) a decrease in melanocyte activity B) thinning of the epidermis of the skin C) a decrease in the number of Langerhans' cells D) a decrease in glandular activity E) All of the answers are correct.
________ is(are) not one of the three main factors that influence blood pressure.
What will be an ideal response?
Betsy took a fall and broke her arm, which required that she wear a cast for a prolonged period of time. When she took the cast off, she was alarmed to see that her muscles
A. had undergone hypertrophy. B. seemed to have an increase in blood flow. C. looked the same as they did before the fall. D. had undergone atrophy.
The major types of enteric neurons include all of the following, except
A. neurons that stimulate or inhibit smooth muscle contractions. B. neurons that connect sensory and motor neurons. C. neurons that detect changes in chemical composition. D. neurons that suppress epithelial secretions.