The glossy-white appearance of most axons is due to
A. their proximity to light-reflecting cartilage.
B. their proximity to white bone.
C. the covering of ependymal cells.
D. the high lipid content of the myelin sheath.
E. the white color of the perivascular feet.
Answer: D
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The root of a tooth is covered by
A) enamel. B) cement. C) dentin. D) pulp. E) the root canal.
What does the term autocrine refer to in terms of location of target tissues?
A. Hormones that travel through the blood to get to their target tissue B. The secretion of a hormone by the cells of the same tissue type that it targets C. Chemicals that cause a response outside of the body in another person D. Hormones that work on neighboring cells without having to go through blood to get to target tissue.
Branches of the subclavian arteries carry blood on the way to the brain, neck and shoulder muscles, and mammary glands
Indicate whether this statement is true or false.
Postganglionic neuron cell bodies of the autonomic nervous system have which category of neurotransmitter receptor?
A. Adrenergic receptors B. Serotonin receptors C. Muscarinic acetylcholine receptors D. Nicotinic acetylcholine receptors E. Dopamine receptors