A&P Prep Quizzes

________ is a condition in which the oxygen-carrying capacity of RBCs is reduced.

Anemia

________ is a condition in which the heart rate is slower than normal.

Bradycardia

As blood flows through peripheral tissues, what occurs regarding the hemoglobin molecules of RBCs?

Hemoglobin binds carbon dioxide and releases its bound oxygen.

The portion of the tracing of an electrocardiogram, ECG, that represents ventricular depolarization is the __________.

QRS complex

Which statement regarding red blood cells is true?

Red blood cells are not capable of mitosis.

Which of the following statements is true about the anatomy of the heart?

The muscular walls of the atria are thinner than those of the ventricles.

Platelets

are a major component of the vascular clotting system.

Agglutinins

are antibodies that will attack surface antigens on RBCs of a different blood type.

The property of heart muscle in which it contracts in the absence of neural or hormonal stimulation is called ________.

autorhythmicity

Which of the following supplies blood to the muscle tissue of the heart?

coronary arteries

Erythropoietin is most likely released under which of the following conditions?

during anemia

When foreign cells invade the body, one would most likely expect to see increased numbers of

lymphocytes.

Which of the following represents the correct sequence of stages in RBC maturation?

myeloid stem cell, proerythroblast, erythroblast, reticulocyte, RBC

Deoxygenated blood is carried away from the right ventricle by the

pulmonary trunk.

Which is NOT a function of blood?

storage

Cardiac muscle cells have abundant reserves of myoglobin, which function in ________.

storing oxygen