Thin filaments are composed of the protein Myosin?
a. true
b. false
Ans: b. false
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When blood flow in a capillary bed decreases in response to locally high oxygen levels, it is caused by
A) intercellular chemicals. B) angiotensin. C) autoregulation. D) neural processes. E) endocrine processes.
Most of the carbon dioxide in the blood is transported
A. as carbaminohemoglobin. B. as bicarbonate ions in the plasma. C. dissolved in the plasma. D. All apply.
An obstruction in the inferior vena cava would hamper the return of blood from the
A. head and neck. B. upper extremities. C. lungs. D. abdomen, pelvis, and lower limbs. E. heart.
Sex _________ (estrogen, testosterone) stimulate osteoblasts and promote the growth of long bones, especially in adolescence.
Fill in the blank(s) with the appropriate word(s).