Unit 1, Lecture 5

Front

What is Homeostasis?

Back

Homeostasis is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation.

Front

What type of burn affects the epidermis and dermis layers only?

Back

A 2nd degree burn affects the epidermis and dermis layers.

Front

What is negative feedback in biological systems?

Back

Negative feedback is a process that counteracts a change in a system, helping to maintain homeostasis, such as the regulation of blood sugar levels by insulin.

Front

What condition is characterized by excessive sweating, heavy breathing, and dizziness in hot weather?

Back

Heat exhaustion is characterized by excessive sweating, heavy breathing, and dizziness in hot weather.

Front

What does vasodilation of blood vessels mean?

Back

Vasodilation means the diameter of the blood vessel increases.

Front

What is the role of insulin in blood sugar regulation?

Back

Insulin helps lower blood sugar levels by allowing glucose to enter cells.

Front

What is the difference between positive and negative feedback mechanisms?

Back

Positive feedback amplifies a response, while negative feedback reduces a response to maintain stability.

Front

What are the symptoms of heat stroke?

Back

Symptoms of heat stroke include high body temperature, confusion, and loss of consciousness.

Front

What is the primary function of the epidermis?

Back

The primary function of the epidermis is to provide a protective barrier for the body.

Front

What happens to blood vessels during exercise?

Back

During exercise, blood vessels undergo vasodilation to increase blood flow to muscles.