Nerves carry impulses by creating electric charges in a process known as ________________________.?
Fill in the blank(s) with correct word
membrane excitability
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The ascending limb of the loop of Henle of a juxtamedullary nephron
a. actively transports NaCl out of the lumen into the interstitial fluid b. is highly permeable to H2O c. is always impermeable to H2O d. has characteristics a and b e. has characteristics a and c
Veins
1.are a major source of resistance in the systemic circulation. 2.are blood reservoirs. 3.have a thick layer of smooth muscle in their walls. 4.are pressure reservoirs. 5.contain less volume than the arteries.
A sequence of amino acids bonded together in a linear chain is called a
A) primary structure. B) secondary structure. C) tertiary structure. D) quaternary structure. E) tripeptide.
The physical movement of air into and out of the lungs is called
A) gas transport. B) cellular respiration. C) internal respiration. D) pulmonary ventilation. E) external respiration.