homeostasis_integumentary

Which of the following is an example of npositive feedback in maintaining homeostasis?

• Blood clotting

• Childbirth contractions

• Regulation of blood glucose levels

• Fever response

Which part of the brain is primarily responsible for maintaining homeostasis?

• Cerebrum

• Cerebellum

• Hypothalamus

• Medulla oblongata

What happens when body temperature rises above normal?

• Blood vessels constrict, and sweat glands deactivate.

• Blood vessels dilate, and sweat glands activate.

• Blood vessels constrict, and shivering occurs.

• Blood vessels dilate, and shivering occurs.

Which of the following is NOT a function of the integumentary system?

• Protection from environmental hazards

• Regulation of body temperature

• Production of white blood cells

• Sensory reception

What pigment in the skin protects against UV radiation?

• Keratin

• Melanin

• Hemoglobin

• Carotene

Which layer of the skin contains blood vessels and nerves?

• Epidermis

• Dermis

• Hypodermis

• Subcutaneous layer

What is the role of sebaceous glands in the skin?

• To produce sweat

• To secrete oil for lubrication

• To produce melanin

• To regulate body temperature

Which vitamin is synthesized in the skin when exposed to sunlight?

• Vitamin A

• Vitamin B

• Vitamin C

• Vitamin D

What happens to blood vessels in the skin during cold temperatures to maintain body heat?

• Vasodilation

• Vasoconstriction

• Sweating

• Increased melanin production

Which hormone is responsible for regulating blood glucose levels by lowering it?

• Glucagon

• Cortisol

• Insulin

• Adrenaline