Negative feedback body temperature flashcards
Understanding negative feedback mechanisms in regulating body temperature.
Quiz(16 questions)
1. Which of the following is NOT a method of heat loss?
Terms in this Study Set(18)
What is negative feedback?
A process that counteracts changes to maintain stability in a system.
How does the body regulate temperature?
Through negative feedback mechanisms that adjust heat production and loss.
True or false: Body temperature is constant.
False, because it fluctuates based on environmental factors and metabolic activity.
Term for the normal body temperature range.
Approximately 97°F to 99°F (36.1°C to 37.2°C).
What triggers sweating?
Increased body temperature activates the hypothalamus, prompting sweat production.
Difference between vasodilation and vasoconstriction.
Vasodilation increases blood flow to the skin for cooling; vasoconstriction reduces blood flow to conserve heat.
Fill in the blank: The _______ detects changes in body temperature.
hypothalamus
True or false: Shivering generates heat.
True, because muscle contractions during shivering increase heat production.
What happens when body temperature rises?
Sweating and vasodilation occur to dissipate excess heat.
Which hormone helps regulate body temperature?
Thyroid hormones increase metabolic rate, affecting heat production.
True or false: The body cannot cool down quickly.
False, because it can cool down through sweating and increased blood flow to the skin.
What is hypothermia?
A condition where body temperature drops below 95°F (35°C) due to excessive heat loss.
How does the body respond to cold?
By shivering, vasoconstriction, and raising metabolic rate to conserve heat.
What role does the skin play in temperature regulation?
The skin acts as a barrier and a site for heat exchange through blood vessels.
Fill in the blank: The hypothalamus is located in the _______.
brain
Difference between fever and hyperthermia.
Fever is a regulated rise in temperature due to illness; hyperthermia is an uncontrolled rise.
How does dehydration affect temperature regulation?
It reduces sweat production, impairing the body's ability to cool down.
Name one method of heat loss.
Evaporation, conduction, convection, or radiation.
Questions in this Study Set(16)
1. Which of the following is NOT a method of heat loss?
2. What happens during vasodilation?
3. What is the primary organ for temperature regulation?
4. How does the body respond to overheating?
5. True or false: Fever is always harmful.
6. What causes shivering?
7. During which condition does hyperthermia occur?
8. Which mechanism prevents heat loss in cold weather?
9. How does dehydration impact body temperature?
10. What is the normal body temperature range?
11. What does the body do when it gets too cold?
12. Which of these is a sign of hypothermia?
13. What is the role of thyroid hormones in temperature regulation?
14. Fill in the blank: The body maintains its temperature around ______ degrees Fahrenheit.
15. Which part of the brain is responsible for thermoregulation?
16. True or false: The skin plays no role in temperature regulation.
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