HESI A2
HESI A2 Version 1 Anatomy and Physiology Questions
Question 1 of 5
Arrector pili are responsible for which action?
Correct Answer: D
Rationale:
Question 2 of 5
What are chemical messengers that control growth, differentiation, and the metabolism of specific target cells called?
Correct Answer: A
Rationale: Hormones are signaling molecules produced by glands that travel through the bloodstream to target cells, exerting control over processes like growth, differentiation, and metabolism. Neurons are nerve cells responsible for transmitting electrical impulses. Glands are structures that secrete substances like hormones. Second messengers are molecules involved in intracellular signal transduction pathways, amplifying and transmitting signals from the cell membrane to the nucleus.
Question 3 of 5
A professional boxer gets punched in the nose resulting in a deviated septum. Which bone is most likely to be involved?
Correct Answer: B
Rationale:
Question 4 of 5
Which type of cholesterol is considered the healthiest?
Correct Answer: B
Rationale: High-density lipoprotein (HDL) is considered the healthiest type of cholesterol because it helps remove LDL cholesterol from the arteries, reducing the risk of heart disease. HDL acts as a scavenger, picking up excess cholesterol in the blood and transporting it back to the liver for removal from the body. This is why HDL is often referred to as 'good' cholesterol, emphasizing its protective role in cardiovascular health.
Question 5 of 5
Which structure regulates the transport of substances in and out of a cell?
Correct Answer: C
Rationale: