Homeostasis and feedback

Front

What is homeostasis?

Back

Homeostasis is the maintenance of an organism’s internal environment within a narrow range of conditions, despite changes in the external environment.

Front

What is an example of positive feedback?

Back

Childbirth is an example of positive feedback, where the release of oxytocin increases contractions during labor.

Front

What is the ultimate cause of death related to homeostasis?

Back

Loss of homeostasis can lead to the ultimate cause of death, as it disrupts the balance necessary for survival.

Front

Why is homeostasis important for multicellular organisms?

Back

It is important because multicellular organisms must keep their internal environment within a narrow range of conditions to support cellular functions.

Front

What hormone is secreted in response to low blood sugar levels?

Back

Glucagon is secreted in response to low blood sugar levels to raise glucose levels in the blood.

Front

What is negative feedback?

Back

Negative feedback is a process that counteracts a change in a system, helping to maintain homeostasis by reversing deviations from a set point.

Front

Give an example of negative feedback in the human body.

Back

An example of negative feedback is the regulation of body temperature; when body temperature rises, mechanisms such as sweating are activated to cool the body down.

Front

What role does insulin play in homeostasis?

Back

Insulin helps lower blood sugar levels by facilitating the uptake of glucose into cells, thus maintaining glucose homeostasis.

Front

What is thermoregulation?

Back

Thermoregulation is the process by which organisms maintain their body temperature within a certain range, crucial for proper functioning.

Front

How does the body respond to overheating?

Back

The body responds to overheating by activating sweat glands and increasing blood flow to the skin to dissipate heat.