In the diagram, where would you find stored Ca2+?
a) B
b) D
c) G
d) F
e) K
d
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Formed primarily of tunica intima and strengthened by elastic and collagen fibers, the ________ in veins prevent blood from pooling.
Fill in the blank(s) with the appropriate word(s).
If acetylcholine (ACh) causes inhibition of a postsynaptic neuron, to what type of membrane channel did the ACh bind?
A) mechanically-regulated channel B) voltage-regulated sodium channel C) voltage-regulated calcium channel D) chemically-regulated potassium channel E) chemically-regulated sodium channel
When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is ________ than the left primary bronchus.
A. more vertical B. thinner C. longer D. shorter E. less ciliated
Covalent bonds form when
A. neutrons are transferred from one atom to another. B. electrons are shared between two atoms. C. protons are lost from atoms. D. molecules become ionized. E. atomic nuclei fuse.