The resting heart rate is between 50 and 90 beats per minute.
a. true
b. false

The correct answer is a. True

Explanation:

The resting heart rate for a normal adult is between 50 to 90 beats per minute.  Resting heartbeat below 50 is possible in persons who are very good athletes. A more cardiovascular fitness is seen in good athlete and they can have a resting heart rate near to 40.

If a normal resting heart rate falls from 60 that condition is known as bradycardia. Mostly old people are more prone to it. Tachycardia is a medical condition in which a person's resting heartbeat reaches above 100.

Both the condition bradycardia and tachycardia shows the problem related to heart and require medical attention.  

between the two muscle layers is the myenteric or auerbach's plexus, which controls peristalsis. in the colon, the muscularis externa is much thicker because the feces are large and heavy, requiring more force to push along. the stomach has a third layer of muscularis externa: the inner oblique layer.

yeet

explanation: