ATI Anatomy And Physiology Practice Test 2 — Questions and Answers
Question 1: Which organelle is primarily responsible for ATP production in the cell?
- Ribosome
- Mitochondrion (Correct answer)
- Golgi apparatus
- Lysosome
Correct answer: Mitochondrion
Mitochondria generate most cellular ATP through oxidative phosphorylation.
Question 2: What type of muscle tissue is found in the walls of blood vessels?
- Skeletal muscle
- Cardiac muscle
- Smooth muscle (Correct answer)
- Striated muscle
Correct answer: Smooth muscle
Smooth muscle lines hollow organs and vessels and contracts involuntarily.
Question 3: Which blood vessel carries oxygenated blood from the lungs to the heart?
- Pulmonary artery
- Pulmonary vein (Correct answer)
- Superior vena cava
- Aorta
Correct answer: Pulmonary vein
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:
- Alveolus
- Nephron (Correct answer)
- Neuron
- Sarcomere
Correct answer: Nephron
The nephron filters blood and forms urine in the kidney.
Question 5: Which gland regulates metabolism by secreting thyroxine?
- Adrenal gland
- Thyroid gland (Correct answer)
- Pituitary gland
- Pancreas
Correct answer: Thyroid gland
The thyroid gland secretes thyroxine (T4), which controls metabolic rate.
Question 6: What is the largest organ of the human body?
- Liver
- Brain
- Skin (Correct answer)
- Lungs
Correct answer: Skin
The skin is the body's largest organ by surface area and weight.
Question 7: Which part of the brain controls balance and coordination?
- Cerebrum
- Cerebellum (Correct answer)
- Medulla oblongata
- Hypothalamus
Correct answer: Cerebellum
The cerebellum coordinates voluntary movements and maintains balance.
ATI Anatomy And Physiology Practice Test 2
Which organelle is primarily responsible for ATP production in the cell?