A heart rate of 125 beats per minute could be correctly termed
A) fibrillation.
B) a normal resting heart rate.
C) tachycardia.
D) an arrhythmia.
E) bradycardia.
C) tachycardia.
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During exercise, sympathetic stimulation of the heart and arteriolar smooth muscle is enhanced because of reflexes triggered by elevated mean arterial pressure and elevated pulse pressure.
Answer the following statement true (T) or false (F)
Sweating is
a. an active evaporative heat-loss process under sympathetic nervous control b. the only means of losing heat when the environmental temperature is warmer than body temperature c. the only means by which evaporative heat loss can take place in the body d. a and b e. all of the above
Which of the following is an example of a membranous organelle?
A) microvilli B) cilia C) centrioles D) ribosomes E) mitochondria
Which are functions performed by the fibrous skeleton of the heart? a: Separates the atria and ventriclesb: Anchors the heart valvesc: Provides electrical insulation between the atria and ventriclesd: Provides the framework for the attachment of the myocardiume: None of these are true functions of the fibrous skeleton of the heart
A. b, d B. a, b, c, d C. a, c, d D. a, d E. e