ATI Anatomy And Physiology Practice Test 2

Question 1

Which organelle is primarily responsible for ATP production in the cell?

Accepted Answer

Mitochondrion

Answer

Mitochondria generate most cellular ATP through oxidative phosphorylation.

Question 2

What type of muscle tissue is found in the walls of blood vessels?

Accepted Answer

Smooth muscle

Answer

Smooth muscle lines hollow organs and vessels and contracts involuntarily.

Question 3

Which blood vessel carries oxygenated blood from the lungs to the heart?

Accepted Answer

Pulmonary vein

Answer

The pulmonary veins return oxygen-rich blood from the lungs to the left atrium.

Question 4

The functional unit of the kidney is called the:

Accepted Answer

Nephron

Answer

The nephron filters blood and forms urine in the kidney.

Question 5

Which gland regulates metabolism by secreting thyroxine?

Accepted Answer

Thyroid gland

Answer

The thyroid gland secretes thyroxine (T4), which controls metabolic rate.

HESI (ATI) Practice Test