Food items are occasionally shown to offer protective effects to those who eat them. Garlic, for example, may improve heart health. The pungency of garlic is due to sulfur-containing compounds. Explain how these compounds are good candidates for garlic's heart benefits.
What will be an ideal response?
When sulfur compounds are metabolized, hydrogen sulfide may be produced. This gas has recently been shown to be a signal molecule that relaxes blood vessels.
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Heat-loss mechanisms do NOT include ________
A) reducing activity B) the evaporation of sweat C) vasoconstriction of peripheral blood vessels D) behavior measures such as wearing light, loose clothing
Food moves along the alimentary tract by a process called __________
Fill in the blank(s) with correct word
Hookworms are visceral larva migrans
Indicate whether the statement is true or false
Which must happen in order for an action potential to begin?
A. The membrane potential must be at the Na+ equilibrium potential. B. Na+ influx must exceed K+ efflux. C. The membrane must be out of the relative refractory period. D. Na+ channels must all be inactivated. E. Multiple inhibitory postsynaptic potentials (IPSPs) must summate.