The left side of the heart receives __________ blood from the __________ circulation and pumps it into the systemic circulation
Fill in the blank(s) with correct word
oxygenated; pulmonary
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________________________________________ brings the oxygen to cells and carries carbon dioxide away from the cells
Fill in the blank(s) with correct word
Which of the following demonstrates the graded response of whole muscle?
a. The amount of force produced by any given muscle is always the same as long as threshold has been reached. b. The force generated to lift a feather is much less than the force required to lift a 25-pound weight. c. A muscle will either contract all at once or not at all. d. Muscles are organized into antagonistic pairs within the body.
Which of the following decreases heart rate, and thus cardiac output and blood pressure?
A) angiotensin-II B) acetylcholine C) norepinephrine D) epinephrine
Visual pathways include axons that project from the optic tracts to the superior colliculi.
Answer the following statement true (T) or false (F)