Which type of neuroglia forms the myelin sheath around nerves outside the brain and spinal cord?
A. Astrocytes
B. Ependymal cells
C. Schwann cells
D. Oligodendrocytes
Answer: C
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In the following hysterosalpingogram, the arrows indicate the:
A) uterine arteries. B) uterine tubes. C) mesovarium. D) round ligaments. E) ureters.
Which bone is a part of the appendicular skeleton?
a. scapula b. vertebra c. parietal d. mandible
Place the following events in synaptic transmission at a cholinergic synapse in order:
A - A postsynaptic potential is produced; B - Voltage gated calcium channels open and calcium enters the cell; C - ACh is released and diffuses across the synaptic cleft; D - A nerve signal arrives at a synaptic knob; E - Ligand gated sodium channels open and sodium enters the cell. A) D, B, C, E, A B) B, D, C, A, E C) D, B, E, A, C D) B, C, D, E, A
An organism that produces disease is known as a(n) ________
A) Pathogen B) Organelle C) Centriole D) Magnetosome