Which of the following does not arise from the embryonic mesoderm?
A. The dermis
B. The nervous system
C. The mesothelium
D. The skeletal system
E. The blood vessels
Answer: B
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Which of the following is NOT a change that may be caused by hormonal stimulus?
A) an increase in enzyme synthesis B) stimulation of mitosis C) a change in membrane potential D) direct control of the nervous system
Neurotransmitters are small, ____________________-acting molecules
Fill in the blank(s) with correct word
When the pH rises above 7.45, a state of ________ exists
A) acidosis B) alkalosis
Despite the strength of the dermis, it is subject to tearing. How might a person know that the dermis has been previously stretched and/or torn?
A) Tension, or cleavage, lines disappear. B) Generally permanent stretch marks, or striae, appear. C) Flexure lines appear where the skin has been stressed. D) The skin will darken due to increased melanin accumulation.