Cardiovascular System (Thermoregulation, Acute responses to PA)

Identify the term for the following definition: The maintenance of body temperature and the heat exchange that occurs between the body and the environment

• Thermoregulation

• Homeostasis

• Hypothemia

• Acute responses

What is the range of our body's normal core temperature in degrees celsius?

• 35-37

• 36.5-37.5

• 34.5-37.5

• 35-36

The maintenance of a constant internal environment for the optimal functioning of the body and its systems is...

• Hypothalamus

• Thermoregulation

• Hyperthemia

• Homeostasis

Which of the following is not a heat conversion response to Hypothermia

• Vasoconstriction

• Shivering

• Vasodialation

• Body hair raised

Which best describes hyperthermia?

• The rise in the body's core temperature

• The constant internal environment for optimal body functioning

• The reduction of the body's core temperature

• An infection that often shows flu-like symptoms

Vasodilation is...

• When the blood vessels contrict

• When a blood vessel shortens in length

• The decrease of blood flow to the tissues

• The widening of the blood vessels

Which best defines heart rate?

•  The rate in which the blood travels through the heart

• The amount of blood the heart pumps per minute

• The number of times the heart contracts or beats per minute

• The number of times the heart contracts or beats per second

When we exercise, cardiac output increases due to the increase in both...

• Stroke volume and steady state

• Heart rate and stroke volume

• The amount of blood being pumped from the heart

• Blood volume and blood flow redistribution

Which of the following best describes the changes in blood flow that occur as a result of physical activity

• Speed of blood flow increases. Blood flow is redistributed to working muscles and away from areas of the body that are less needed.

• Speed of blood flow is slowed down, and the working muscles begin to feel fatigued

• Blood flow is redistributed to the areas in the body that aren't heavily required during exercise

• Speed of blood flow is increased due to a decrease in heart rate and stroke volume

Systolic blood pressure...

• Decreases when we participate in physical activity

• Causes the diastolic blood pressure to significantly increase when exercising

• Increases when we participate in physical activity