In a neuron, the greatest concentration of neurotransmitter is found in the
A) cell body.
B) collateral branches.
C) terminal arborization.
D) synaptic knobs.
Ans: D) synaptic knobs.
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A serous membrane consists of a
A. layer of simple squamous epithelium and a thick layer of dense connective tissue. B. layer of simple squamous epithelium and a thick layer of cartilage. C. layer of simple squamous epithelium and a thin layer of areolar tissue. D. layer of pseudostratified epithelium and a thick layer of areolar tissue.
Which of the following is the correct pathway from the retina to the visual cortex?
A. Optic tract, ganglion cells, optic radiations, thalamus, optic chiasma, optic nerve, temporal lobe B. Optic nerve, optic tract, optic chiasma, optic radiations, thalamus, ganglion cells, parietal lobe C. Ganglion cells, optic nerve, optic chiasma, optic tract, thalamus, optic radiations, occipital lobe D. Optic nerve, optic radiations, optic chiasma, ganglion cells, thalamus, optic tract, occipital lobe
Increased levels of carbon dioxide in the blood will result in decreased
A) heart rate. B) cardiac output. C) blood flow to the lungs. D) parasympathetic stimulation of the heart. E) None of the answers is correct.
The sarcolemma of a resting muscle fiber is most permeable to ________.
A. sodium B. magnesium C. lithium D. calcium E. potassium