Homeostasis and Thermoregulation

Why is the human body's core temperature 37^oC?

• Optimum temperature for enzymes

• No specific reason

• To limit the enzymes rate of reaction

• It's not 37^oC

Tags

NGSS.HS-LS1-3

The term for maintaining an internal temperature is _______.

• thermoregulation

• thermometer

• homeothermal

• homeostasis

True or False?

When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.

• True

• False

What is the term to describe blood vessels near the surface of the body loosening up to release heat?

• Vasoconstriction

• Vasodilation

Maintaining body temperature is an example of a:

• negative feedback loop

• positive feedback loop

Tags

NGSS.HS-LS1-3

Which of the following is NOT a method of thermoregulation?

• Sweating

• Shivering

• Vasodilation

• Photosynthesis

An organism whose body temperature is the same as the environment it is in is referred to as ________.

• poikilothermic

• homeothermic

• warm-blooded

• endothermic

The loss of 1.5 degrees of heat per hour

• Rigor mortis

• Livor mortis

• Algor mortis

• Pallor mortis

Which of the following is an example of a negative feedback mechanism?

• Blood clotting

• Childbirth contractions

• Regulation of blood sugar levels

• Action potentials in neurons

Tags

NGSS.HS-LS1-3

Which body systems are involved in regulating body temperature?

• Integumentary, skeletal, and nervous

• Circulatory, nervous, and digestive

• Circulatory, nervous, and endocrine

• Integumentary (skin), circulatory, and nervous