The concentration neurotransmitters in the fluid of the synaptic cleft must be tightly regulated for neurons to function properly. Which of the following cells is most responsible for aiding in this regulation?
A) satellite cells
B) astrocytes
C) Schwann cells
D) oligodendrocytes
B
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Podocytes and pedicels are part of the
A. collecting duct. B. glomerular capsule. C. distal convoluted tubule. D. peritubular capillaries.
To maintain ________, the body uses a combination of simple diffusion across small distances; wide spread distribution of molecules through the circulatory system and rapid, specific delivery of messages by the nervous system.
Fill in the blank(s) with the appropriate word(s).
Which autonomic plexus consists of postganglionic sympathetic axons that come off the cervical and thoracic sympathetic trunk ganglia, as well as preganglionic axons from the vagus nerve?
A. Cardiac plexus B. Abdominal aortic plexus C. Esophageal plexus D. Pulmonary plexus E. Hypogastric plexus
What is the function of neuroglia?
A. Protection and support B. Movement C. Communication D. Coverage