Unit 6 Test Review A&P

A low hematocrit number causing a deficiency in oxygen carrying capacity of the red blood cells

• polycythemia

• anemia

• leukemia

• hemophilia

The hormone responsible for increased production of erythrocytes is

• FSH

• LH

• ADH

• EPO

What is the difference between a thrombus and an embolus?

• one occurs in the arteries, the other in the veins

• one occurs in the bloodstream, while the other occurs outside the blood

• one is a blood clot, while the other is a stuck blood clot

An important role in blood clotting is played by

• leukocytes

• platelets

• erythrocytes

• plasma

Which of the heart layers is a muscle?

• myocardium

• epicardium

• endocardium

A record of electric currents generated by the heart muscle can be detected by a

• sphygmograph

• electrocardiograph

• stethoscope

• electroencephalograph

Backflow of blood from the ventricles to the atria is prevented by the

• aortic and semilunar valves

• tricuspid and semilunar valves

• mitral and tricuspid valves

• mitral and semilunar valves

The heartbeat originates in the SA node. This pacemaker is located in the

• left ventricle

• left atrium

• right ventricle

• right atrium

Atrial contraction coincides in time with the

• P wave

• T wave

• QRS complex

When taking a blood pressure reading, the sound you first hear when blood flow is stopped and then begins is called the

• systolic pressure

• diastolic pressure

• pulse pressure

• pressure point