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Question
What is the first structure of a reflex arc?
A. effector (muscles or glands)
B. receptor
C. sensory neuron
D. motor neuron
Answer
This answer is hidden. It contains 1 characters.
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DHEAS travels from the fetal adrenal cortex to the placenta where it is converted into oxytocin.
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arteries
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B. decreased, K+
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Cells synthesizing hydroxyapatite in bones are termed as
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Bone resorption is produced by the action of _____________, which return bone calcium and phosphate to the blood.
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B. osteoclasts
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