1)In the peripheral nervous system, myelin is formed by ________. In the central nervous system, myelin isformed by ________.A) Schwann cells : microglial cellsB) Schwann cells : astrocytesC) oligodendrocytes : Schwann cellsD) Schwann cells : oligodendrocytes
2)The diaphragm muscle separates the ________ from the ________.
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3)The narrow passageways that contain cytoplasmic extensions of osteocytes are called
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4)In myelinated axons, sodium and potassium channels would be concentrated in what area?
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5)The innermost serous membrane covering the outside of the heart is the:A) visceral pericardiumB) parietal pericardiumC) visceral pleuraD) synovial layerE) peritoneum
6)Which of the following is the correct order of events that occur at a cholinergic synapse?1.Extracellular calcium enters the axon terminal, triggering the exocytosis of acetylcholine.2.Acetylcholine is removed by acetylcholinesterase.3.Acetylcholine binds to receptors and depolarizes the postsynaptic membrane.4.Axon terminal depolarizes.
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7)The ________ glands in the axilla become active at the time of puberty.
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8)At rest, active sites on the actin are blocked by
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9)Cells that store fat are calledA) cellulocytes.B) macrocytes.C) adipocytes.D) podocytes.E) melanocytes