Health Educational Systems Health Educational Systems Certifications HESI Questions & Answers

• Question 301:

  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 302:

  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 303:

  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 304:

  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

• Question 305:

  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 306:

  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 307:

  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 308:

  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 309:

  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 310:

  The endocrine system of the body is responsible for:

  A. defense through the use of antibodies.

  B. communication through the use of hormones.

  C. metabolism through the use of enzymes.

  D. blood flow through the use of the heart muscle.

  Correct Answer: B