HESI A2
HESI A2 Version 1 Anatomy and Physiology Questions
Question 1 of 5
Where does digestion begin in the digestive system?
Correct Answer: D
Rationale:
Question 2 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 3 of 5
What is the name of the structure that prevents food from entering the airway?
Correct Answer: D
Rationale: The structure that prevents food from entering the airway is the epiglottis. The epiglottis is a flap of cartilage located behind the tongue at the top of the larynx. During swallowing, the epiglottis covers the opening of the trachea, directing food and liquids to the esophagus instead of entering the airway. This mechanism ensures that food safely passes into the digestive system, avoiding any blockage of the respiratory pathway.
Question 4 of 5
What is the response of cells in the collecting tubules in the nephrons when antidiuretic hormone (ADH) is secreted?
Correct Answer: C
Rationale:
Question 5 of 5
During digestion, what does the stomach muscle churn and mix food into, turning it into a soupy substance known as which of the following?
Correct Answer: C
Rationale: The correct answer is C: Chyme. During digestion, the stomach muscle contracts and mixes food with digestive juices, breaking it down into a thick, soupy liquid called chyme. This chyme is then slowly released into the small intestine for further digestion and absorption of nutrients.