HESI A2
HESI A2 Version 1 Anatomy and Physiology Questions
Question 1 of 5
What do ceruminous glands secrete?
Correct Answer: B
Rationale:
Question 2 of 5
Which structure of the nervous system carries action potential in the direction of a synapse?
Correct Answer: B
Rationale: The correct answer is B: axon. The axon is a long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body towards other neurons or target cells, such as muscles or glands, including towards a synapse. The cell body contains the nucleus and other organelles but does not carry action potentials. While a neuron is the overall structural and functional unit of the nervous system, the axon is specifically responsible for transmitting action potentials.
Question 3 of 5
A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, tall and thin cells, and no blood vessels in the tissue. What type of tissue is this?
Correct Answer: A
Rationale: The correct answer is A: Epithelial. Epithelial tissue is characterized by cells tightly packed together that form a protective barrier on internal and external body surfaces. The description in the question matches the characteristics of epithelial tissue found lining the internal surface of organs like the stomach. This type of tissue lacks blood vessels and typically does not contain an extracellular matrix, which is a defining feature of connective tissue. Muscle tissue is composed of cells capable of contraction and relaxation, while cartilage is a type of connective tissue consisting of specialized cells embedded in a matrix.
Question 4 of 5
What are the macromolecules the genetic code is carried on?
Correct Answer: D
Rationale:
Question 5 of 5
Where in the human body are most nutrients absorbed?
Correct Answer: D
Rationale: