Test Prep Test Prep Certifications HESI-A2 Questions & Answers

• Question 111:

  Anatomical position shows the body in a(n) ______ position.

  A. lateral

  B. superior

  C. anterior

  D. posterior

  Correct Answer: C

• Question 112:

  During exhalation, the diaphragm does which of the following?

  A. Relaxes and lifts

  B. Relaxes and lowers

  C. Contracts and lifts

  D. Contracts and lowers

  E. Does not move

  Correct Answer: C

• Question 113:

  Electrical impulses called "action potentials" move along the axon of a neuron by ______________?

  A. Elongation

  B. Chemical messaging

  C. Electrochemical gradients

  D. Saltatory conduction

  E. Repolarization

  Correct Answer: D

• Question 114:

  The release of prolactin during breastfeeding is an example of __________________?

  A. Negative feedback

  B. Positive feedback

  C. Gene regulation

  D. Protein synthesis

  E. Cell permeability

  Correct Answer: B

• Question 115:

  Which of the following is NOT a function of the digestive tract?

  A. To use enzymes to break down food.

  B. To perform gas exchange.

  C. To remove waste from the body.

  D. To use peristalsis to move food along.

  Correct Answer: B

• Question 116:

  The body, at all times, attempts to maintain homeostasis. The best definition of homeostasis is:

  A. a process that maintains the stability of the human body's internal environment in response to changes in internal and external conditions.

  B. a function via which the body breaks down glucose to use as energy.

  C. a process that maintains the immune system's defenses.

  D. a process in which the body resists change to its genetic structure.

  Correct Answer: A

• Question 117:

  Respiration rates are regulated by which of the following?

  A. Increasing levels of oxygen

  B. Increasing levels of nitrogen

  C. Increasing levels of carbon dioxide

  D. Decreasing levels of oxygen

  E. Decreasing level of carbon dioxide

  Correct Answer: C

• Question 118:

  Which type of cellular connection is characterized by openings in adjacent animal cells for intercellular exchange to take place?

  A. Desmosomes

  B. Tight Junctions

  C. Gap Junctions

  D. Plasmodesmata

  E. Molecular Anchoring

  Correct Answer: C

• Question 119:

  What is the main function of calcitonin?

  A. Increasing the absorption of calcium in the heart.

  B. Decreasing the calcium concentration in the blood.

  C. Preventing the increase in calcium in the bone marrow.

  D. Inhibiting the processing of calcium in the muscle cells.

  E. None of the above

  Correct Answer: B

• Question 120:

  This enzyme begins the process of carbohydrate digestion in the mouth.

  A. Lipase

  B. Protease

  C. Amylase

  D. Nuclease

  E. B and C

  Correct Answer: C