Which of the following types of neurons is the most common type of neuron found in the brain and spinal cord?
a) bipolar neuron
b) multipolar neuron
c) unipolar neuron
d) nonpolar neuron
e) pseudounipolar
b
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Like blood, lymph flows both to and from the heart
Indicate whether the statement is true or false
Motor neurons whose cell bodies are within the spinal cord are called ________ neurons
A) upper motor B) lower motor C) preganglionic D) postganglionic E) somesthetic
Which of the following structures is correctly matched with its function?
A) Ascending limb of the loop of Henle: major site of secretion of K+ B) Descending limb of the loop of Henle: major site for transport of solutes C) Proximal tubule: site of secretion of organic anions and cations D) Distal tubule: main site of reabsorption of Ca2+and Mg2+
In the light-adapted state,
-colors are dull. -we would see better in the dark. -photoreceptors are much less sensitive to stimulation. -photoreceptors are much more sensitive to stimulation. -we can only see color, and not black and white.