An MI that affects the ________ side of the heart is more severe because it has to pump blood with ________ force
A) right; less
B) right; more
C) left; less
D) left; more
E) right; equal
D
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What is the role of calcium in muscle contraction?
A. It stimulates the passage of an electrical signal along the length of the sarcolemma. B. It binds to tropomyosin to expose a binding site for thick filaments. C. It provides energy for contraction. D. It binds to troponin to expose a myosin binding site. E. It binds to troponin to expose an actin binding site.
Molecules that do not readily interact with water are called
A) inert. B) stable. C) hydrophobic. D) unstable. E) hydrophilic.
A conduction pathway consists of a(n)
A. nerve and effector. B. nerve and a tract. C. ganglion and a nucleus. D. tract and a nucleus.
The release of hormones from the adrenal medulla is stimulated by
A. adrenocorticotropic hormone. B. the sympathetic division of the autonomic nervous system. C. follicle-stimulating hormone. D. growth hormone. E. thyrotropic hormone.