Which cells form myelin in the spinal cord?
A. Schwann cells
B. Astrocytes
C. Satellite cells
D. Oligodendrocytes
E. Microglia
D. Oligodendrocytes
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Which age-related change is defined as the formation of a stationary blood clot?
A) aneurysm B) pulmonary embolism C) atherosclerotic plaque D) thrombus E) myocardial infarction
The ________ foramina are exclusive to the cervical vertebra.
Fill in the blank(s) with the appropriate word(s).
Put the following events of the neuromuscular junction in the order in which they occur.
1. Action potential is propagated in the sarcolemma. 2. Acetylcholine binds to ligand gated sodium channels. 3. Action potential arrives at the neuromuscular junction. 4. Vesicles full of acetylcholine are stored at the axon terminal. 5. Acetylcholine is released into the synaptic cleft.
What is the main function of glucagon?
A) regulate sodium and potassium ion levels B) lower blood glucose levels C) raise blood glucose levels D) regulate blood pressure