HESI A2 Anatomy and Physiology Practice Test 2023

Questions 38

HESI A2

HESI A2 Test Bank

HESI A2 Anatomy and Physiology Practice Test 2023 Questions

Question 1 of 5

What is the main function of the nervous system?

Correct Answer: C

Rationale: The correct answer is C: Regulating body temperature. The nervous system plays a vital role in maintaining homeostasis by controlling body temperature through signals to sweat glands and blood vessels. Choices A, B, and D are incorrect because transporting blood is primarily done by the circulatory system, protecting the body from infection is the role of the immune system, and digesting food is the function of the digestive system.

Question 2 of 5

What is the main function of the adrenal glands?

Correct Answer: C

Rationale: The correct answer is C: Regulation of blood pressure. The adrenal glands produce hormones like adrenaline and aldosterone that help regulate blood pressure by controlling fluid balance and constriction/dilation of blood vessels. Adrenal glands do not directly regulate metabolism (choice A), produce bile (choice B), or produce insulin (choice D). Metabolism is mainly regulated by the thyroid gland, bile is produced in the liver, and insulin is produced in the pancreas. Hence, choices A, B, and D are incorrect in the context of the main function of the adrenal glands.

Question 3 of 5

Which organ is responsible for filtering and cleaning the blood?

Correct Answer: C

Rationale: The correct answer is C: Kidneys. The kidneys are responsible for filtering and cleaning the blood through the process of removing waste products, excess fluids, and toxins, which are then excreted as urine. The kidneys play a crucial role in maintaining the body's overall balance of fluids and electrolytes. The other choices are incorrect because: A: Lungs are responsible for exchanging gases, not filtering blood. B: Heart is a muscular organ that pumps blood, not involved in blood filtration. D: Liver plays a role in detoxification and metabolism, but it does not directly filter blood like the kidneys do.

Question 4 of 5

What is the function of the liver in digestion?

Correct Answer: A

Rationale: The correct answer is A: To produce bile. The liver produces bile, which is essential for the breakdown and absorption of fats in the small intestine. B is incorrect because the storage of glucose is primarily done in the liver, not for digestion. C is incorrect as the pancreas, not the liver, secretes digestive enzymes. D is incorrect as while the liver does play a role in detoxification, its primary function in digestion is bile production.

Question 5 of 5

What is the function of the medulla oblongata in the brain?

Correct Answer: A

Rationale: The correct answer is A. The medulla oblongata controls vital functions such as breathing and heart rate. It contains centers that regulate the rate and depth of breathing as well as the heartbeat. This is crucial for maintaining homeostasis and ensuring oxygen is delivered to tissues. Other choices are incorrect because the medulla oblongata is not responsible for regulating body temperature (B), coordinating voluntary movements (C), or processing sensory information (D). These functions are associated with other regions of the brain such as the hypothalamus, cerebellum, and cerebral cortex, respectively.

Similar Questions

Join Our Community Today!

Join Over 10,000+ nursing students using Nurselytic. Access Comprehensive study Guides curriculum for HESI A2-HESI A2 and 3000+ practice questions to help you pass your HESI A2-HESI A2 exam.

Call to Action Image