In the condition ________, a virus infects posterior root ganglia, causing a painful rash whose distribution corresponds to that of the affected sensory nerves as seen in their dermatomes
A) myasthenia gravis
B) neuronal damage
C) shingles
D) chickenpox
E) Hodgkin's disease
C
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When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of
A. sodium ions. B. neuropeptides. C. neurotransmitters. D. calcium ions.
The conchae
A) divide the nasal cavity into a right and a left side. B) provide an opening into the pharynx. C) provide a increase in surface area for the sense of smell. D) create turbulence in the air to trap particulate matter in mucus. E) provide an opening to paranasal sinuses.
Which structure consists of calcified connective tissue?
a) A b) B c) E d) F e) G
In the fetus, which blood vessel(s) carries carbon dioxide and metabolic wastes from the fetus to the placenta?
A) ductus arteriosus B) ductus venosus C) umbilical arteries D) umbilical vein