Muscle contractions that produce a shortening muscle with a constant contraction strength at a given load are termed ________.
A. isometric contractions
B. treppe contractions
C. twitch contractions
D. isotonic contractions
Answer: D
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Disorders involving the vagus nerve might cause
A) food to remain in your stomach longer. B) a drop in blood pressure. C) constriction of the pupils. D) more saliva production. E) increased sweating.
The DCT secretes hydrogen ions in exchange for sodium ions by the process of
A) diffusion. B) facilitated diffusion. C) osmosis. D) cotransport. E) energy-dependent exchange pump.
The most important force causing net water flow across capillary walls is ________.
A) osmotic pressure of plasma proteins B) hydrostatic pressure of capillary blood C) hydrostatic pressure of interstitial fluid D) intracellular hydrostatic pressure
During the fight-or-flight reaction, ________ is released from the adrenal medulla and binds to ________ receptors, found on the vascular smooth muscle of heart, liver, and skeletal muscle arterioles and results in (increased/decreased) blood flow to these organs; the same hormone binds to ________ receptors on other tissues, causing (increased/decreased) blood flow to these organs.
Fill in the blank(s) with the appropriate word(s).