Homeostasis ~ Cell Theory

Front

What is homeostasis?

Back

Homeostasis is the maintenance of a relatively stable internal environment in an organism, despite changes in external conditions.

Front

What is the normal internal body temperature for humans?

Back

The normal internal body temperature for humans is approximately 37 degrees Celsius.

Front

What is a homeostatic mechanism for maintaining body temperature?

Back

Shivering is a homeostatic mechanism that helps maintain body temperature by generating heat through involuntary muscle contractions.

Front

What structure do plant cells have that animal cells do not?

Back

Plant cells have a rigid cell wall, while animal cells do not.

Front

What is the process of maintaining a stable internal condition called?

Back

The process of maintaining a stable internal condition is called homeostasis.

Front

What happens to the body during shivering?

Back

During shivering, the body undergoes involuntary contractions of muscles to generate heat and warm up.

Front

What is feedback regulation in homeostasis?

Back

Feedback regulation is a process where the body uses information about its internal environment to make adjustments and maintain homeostasis.

Front

What is vasodilation?

Back

Vasodilation is the widening of blood vessels, which helps to increase blood flow and decrease body temperature.

Front

What is vasoconstriction?

Back

Vasoconstriction is the narrowing of blood vessels, which helps to conserve body heat by reducing blood flow to the skin.

Front

How does sweating help maintain homeostasis?

Back

Sweating helps maintain homeostasis by cooling the body down through evaporation, which lowers body temperature.