The pulse of a long-distance runner is measured by a doctor. Their heart rate is 53 bpm. This heart rate demonstrates a type of arrhythmia called ________.
Fill in the blank(s) with the appropriate word(s).
bradycardia
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The resistance to blood flow of the entire cardiovascular system is known as
A) severe combined constriction. B) vasomotion. C) vasoconstriction. D) total peripheral resistance. E) systemic resistance.
Which of the following anterior pituitary hormones stimulates the adrenal cortex to secrete cortisol?
a) Leutinizing hormone b) Prolactin c) Insulin-like growth factors d) Melanocyte-stimulating hormone e) Adrenocorticotropic hormone
The anterior __________ branch of the left coronary artery supplies blood to both ventricles.
Fill in the blank(s) with the appropriate word(s).
The circuitry of the autonomic system allows for control in activation. The characteristic that allows a small number of preganglionic cells to stimulate a large number of postganglionic cells is
A. divergence. B. reciprocal innervation. C. reverberation. D. convergence.