Test Prep HESI-A2 Online Practice Questions and Exam Preparation

Test Prep HESI-A2 Online Questions & Answers

• Question 221:

  What vein returns blood to the heart, draining the head, neck, and upper torso?

  A. Superior vena cava
  B. Inferior vena cava
  C. Ascending aorta
  D. Descending aorta
  E. Pulmonary vein
  A. Superior vena cava

• Question 222:

  Chocolate cysts of the ovaries are attributed to ____.

  A. ectopic pregnancy
  B. endometriosis
  C. pelvic inflammatory disease
  D. menorrhagia
  B. endometriosis

• Question 223:

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

• Question 224:

  There are 6,657 marbles in a jar. Approximately 34% are white, and the rest are black. How many black marbles are there?

  A. 2,263
  B. 4,394
  C. 1,098
  D. 66
  B. 4,394

• Question 225:

  Select the best word for the blank in the following sentence.

  Neither of the flower bouquets ____ as full as the one we ordered last year.

  A. are
  B. is
  C. were
  D. being
  B. is

• Question 226:

  Which is not produced by an exocrine gland?

  A. digestive enzymes
  B. milk
  C. adrenaline
  D. saliva
  C. adrenaline

• Question 227:

  Reading Material

  A complete blood count (CBC) is one of the most useful and requested types of analysis in medical practice. A CBC searches for all the cells that exist in the blood, which are divided into three basic types: white blood cells (leukocytes),

  platelets, and red blood cells (erythrocytes). All of these blood cells are produced in the bone marrow and correspond to a specific exam, integrated in the CBC: erythrogram, leukogram, and thrombogram.

  The erythrogram studies red blood cells. Among other tests, it includes a red blood cell count, a hematocrit, and hemoglobin. When these levels are low, the patient may be suffering from anemia, which can be caused by anything from heavy

  menstrual bleeding to Addison's disease. A diagnosis of polycythemia may be made if the number of red blood cells is increased.

  The leukogram is the test that evaluates the number of white cells present in the blood, which should vary between 4,000 and 10,000 cells per cubic millimeter in most adults. High values of white blood cells are seen with infection or severe

  emotional/physical stress, while AIDS and chemotherapy are two causes for low values.

  The thrombogram is the analysis of platelets, the cells responsible for coagulation. The main function of platelets is to help stop bleeding by helping form a clot. They do this by secreting proteins from their surface that allow them to stick to

  vessels and each other. Low values of platelets are seen with pregnancy or an enlarged spleen, whereas high values are seen with cancers or iron deficiency. What is the name of the disease characterized by a high number of red blood cells?

  A. This condition was not mentioned in this passage.
  B. thrombocytopenia
  C. polycythemia
  D. anemia
  C. polycythemia

• Question 228:

  A scientist discovers an atom of sodium in its natural state. The scientist knows that the oxidation number of this atom is most likely:

  A. 0.
  B. 1.
  C. 2.
  D. 3.
  A. 0.

• Question 229:

  Select the meaning of the underlined word in the sentence.

  The preexisting condition was covered by insurance, and the patient did not have to pay for surgery.

  A. juxtaposing
  B. false
  C. negligible
  D. exist beforehand
  D. exist beforehand

• Question 230:

  Decomposition occurs fastest in which type of environment?

  A. very dry, deoxygenated
  B. very dry, oxygenated
  C. moist, oxygenated
  D. very wet, deoxygenated
  C. moist, oxygenated