HESI A2
HESI A2 Version 1 Anatomy and Physiology Questions
Question 1 of 5
Which type of cholesterol is considered to be the healthiest?
Correct Answer: B
Rationale: High-Density Lipoprotein (HDL) cholesterol 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, carrying cholesterol away from the arteries to the liver where it can be processed and eliminated from the body. Having high levels of HDL cholesterol is associated with a lower risk of cardiovascular diseases.
Question 2 of 5
What contributes to phagocytosis in white blood cells?
Correct Answer: D
Rationale:
Question 3 of 5
What is the function of aldosterone?
Correct Answer: B
Rationale: Aldosterone is a hormone produced by the adrenal glands that plays a key role in regulating sodium and potassium levels in the body. Its primary function is to conserve sodium by increasing its reabsorption in the kidneys, which helps maintain electrolyte balance and blood pressure. Therefore, the correct answer is B.
Question 4 of 5
What cavity of the heart normally has the thickest wall?
Correct Answer: C
Rationale:
Question 5 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.