HESI A2
HESI A2 Version 1 Anatomy and Physiology Questions
Question 1 of 5
Which stratum of the epidermis is found only in thick skin?
Correct Answer: A
Rationale:
Question 2 of 5
What is the name of the process in the lungs by which oxygen is transported from the air to the blood?
Correct Answer: B
Rationale: The correct answer is B, diffusion. Diffusion is the process by which oxygen moves from an area of high concentration (in the air) to an area of low concentration (in the blood) through the alveoli in the lungs. Osmosis involves the movement of water molecules across a semipermeable membrane, not oxygen molecules. Dissipation refers to the dispersal or scattering of something. Reverse osmosis is a process used in water purification, which is not relevant to the transport of oxygen in the lungs.
Question 3 of 5
Where are all the nutrients that enter the hepatic portal vein routed for processing?
Correct Answer: D
Rationale: All the nutrients that enter the hepatic portal vein are routed to the liver for processing. The liver is responsible for detoxifying and metabolizing substances absorbed from the gastrointestinal tract before they enter the systemic circulation. It filters and processes nutrients, drugs, and toxins, ensuring that only safe and usable substances are distributed throughout the body.
Question 4 of 5
A man has a growth on his skin and a small sample needs to be removed and observed under a microscope. Which procedure will be used?
Correct Answer: C
Rationale:
Question 5 of 5
What percentage of a female's blood volume is composed of red blood cells?
Correct Answer: C
Rationale: Approximately 40% of a female's blood volume is composed of red blood cells, a proportion known as hematocrit. This percentage may vary slightly based on factors like age and overall health. Red blood cells play a crucial role in oxygen transport throughout the body, and deviations from the normal range can indicate various medical conditions.