Which of the following tissues is most dependent upon a constant blood supply of glucose?
A. liver
B. brain
C. adipose
D. skeletal muscle
E. cardiac muscle
B
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During inhalation, air continues to move into the lungs until
A) the internal pressure is the same is atmospheric pressure. B) the internal pressure is less than atmospheric pressure. C) the internal pressure is greater than atmospheric pressure. D) the compliance of the lung decreases. E) the lungs recoil.
____________________ ions shift into the red blood cells to maintain electric neutrality when HCO3- moves out of the cells down its concentration gradient
Fill in the blank(s) with correct word
Which of the following is not true of elastic filaments?
A. They are composed of titin. B. They run through the core of thin filaments. C. They attach to Z discs. D. They prevent overstretching of muscle fibers. E. They help to stabilize thick filaments.
Large cells that nourish developing sperm cells and form the blood-testes barrier are:
A) primary spermatocytes. B) Sertoli cells. C) spermatids. D) spermatogonia. E) sperm cells.