A&P I Unit 2 Review

Front

What causes goosebumps?

Back

Arrector pili muscle

Front

What role do enzymes play in metabolic reactions?

Back

They control rates of both catabolic and anabolic reactions.

Front

What hormone stimulates osteoclasts for bone resorption?

Back

Parathyroid Hormone (PTH)

Front

What can cause denaturation of an enzyme?

Back

Radiation, excess heat exposure, extreme pH values, electricity, particular chemicals.

Front

What does it mean when epithelial tissues are described as avascular?

Back

They lack blood vessels.

Front

Define the term 'metabolism'.

Back

The sum of all chemical reactions that occur within a living organism.

Front

What is the function of the arrector pili muscle?

Back

To contract and cause hair to stand up, resulting in goosebumps.

Front

Explain the difference between catabolic and anabolic reactions.

Back

Catabolic reactions break down molecules for energy, while anabolic reactions build up molecules using energy.

Front

What is the role of calcitonin in the body?

Back

To lower blood calcium levels by inhibiting osteoclast activity.

Front

What factors can affect enzyme activity?

Back

Temperature, pH, substrate concentration, and the presence of inhibitors or activators.