The regulation of potassium balance ________.
A) is not linked to sodium balance
B) includes renal secretion, but never absorption
C) is accomplished mainly by hepatic mechanisms
D) involves aldosterone-induced secretion of potassium
D) involves aldosterone-induced secretion of potassium
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Which brain area and function are NOT correctly paired?
a. cerebellum: skilled voluntary activity b. brain stem: sense of fear c. thalamic region: crude awareness of sensation d. cerebral cortex: personality traits e. amygdala: emotional memories
When the palms of the hand face up, or anteriorly, they are referred to as __________.
Fill in the blank(s) with the appropriate word(s).
A muscle with the greatest number of tendons is a ________ muscle.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons. 2. Large-diameter nerve fibers conduct impulses much faster than small-diameter fibers. 3. The nodes of Ranvier are found only on myelinated, peripheral neuron processes. 4. Unipolar neurons have axons structurally divided into peripheral and central processes. 5. A stimulus traveling toward a synapse appears to open calcium ion channels at the presynaptic end, which in turn promotes fusion of synaptic vesicles to the axonal membrane.