The Graph Below Gives the Heart Rate of a Woman

question 9

Short Answer

The graph below gives the heart rate of a woman before, during, and after an aerobic workout. Use the graph to answer the question. What was her heart rate before beginning the workout? __________ beats/min

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Definitions:

Parasympathetic Nervous System

A division of the autonomic nervous system responsible for conserving energy and promoting a state of calmness and rest.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle activation, memory, and learning.

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, affecting heart rate, blood pressure, and blood glucose levels.

Epinephrine

Epinephrine, also known as adrenaline, is a hormone and neurotransmitter that increases heart rate, contracts blood vessels, and opens airways in response to stress or excitement.