The specificity of hormone action derives from
A) target cell receptors that are unique for all steroid hormones.
B) target cell receptors that are unique for all nonsteroid hormones.
C) target cell receptors that bind only certain neurotransmitters.
D) target cell receptors that are unique for each hormone.
D
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__________ fluid prevents friction between the heart and the pericardium when the heart beats
Fill in the blank(s) with correct word
Blood cell formation is called osteogenesis
Indicate whether the statement is true or false
Epinephrine
a. is secreted by the adrenal medulla b. is secreted along with norepinephrine c. reinforces sympathetic nervous system activity d. mobilizes energy reserves e. has all of the above characteristics
In addition to the carotid arteries, the brain is also supplied with blood through the ________.
A. axillary arteries B. thoracic aorta C. vertebral arteries D. posterior intercostal arteries