In order to determine the hematocrit, blood is placed in a
a. hemoglobinometer.
b. movable slide.
c. centrifuge.
d. coagulation tube.
c. centrifuge.
Which of the following do you think would be the most common artery palpated to determine heart rate.
a. temporal artery
b. posterior tibial artery
c. radial artery
d. popliteal artery
c. radial artery
The __________ is the standard artery used to determine blood pressure.
a. femoral artery
b. common carotid artery
c. brachial artery
d. posterior tibial artery
c. brachial artery
Which of the following blood vessels have the lowest pressures?
a. veins
b. venules
c. capillaries
d. arterioles
a. veins
The sounds heard during the last phase of blood-pressure measurement are
a. Korotkoff sounds
c. silence.
b. heart murmurs.
d. systolic sounds.
c. silence.
The stethoscope is placed over the ________ artery in the antecubital space when taking blood pressure.
a. radial
b. ulnar
c. axillary
d. brachial
d. brachial
Which of the following resting blood pressures would be considered normal?
a. 140/95 mm Hg
b. 80/50 mm Hg
c. 120/80 mm Hg
d. 130/90 mm Hg
c. 120/80 mm Hg
Which of the following resting blood pressures would be considered hypertension?
a. 100/60 mm Hg
b. 110/75 mm Hg
c. 135/90 mm Hg
d. 120/80 mm Hg
c. 135/90 mm Hg
During the contraction of the left ventricle, the systemic arterial pressure reaches its maximum, which is called
a. diastolic pressure.
b. systolic pressure.
c. pulse pressure.
d. mean arterial pressure.
b. systolic pressure.
When the left ventricle relaxes, the blood pressure drops to its lowest level, which is called
a. diastolic pressure.
b. mean arterial pressure.
c. systolic pressure.
d. pulse pressure.
a. diastolic pressure.
A condition in which there is a fall in blood pressure upon standing that is not compensated for by the baroreceptor reflex is called
a. postural hypotension
b. postural bradycardia.
c. postural tachycardia.
d. postural atherosclerosis.
a. postural hypotension
The last Korotkoff sound occurs when the blood pressure is equal to
a. atmospheric pressure.
b. diastolic pressure.
c. systolic pressure.
d. pulmonary pressure.
b. diastolic pressure.
The sounds heard during the first phase of blood-pressure measurement are called
a. diastolic sounds.
b. Korotkoff sounds.
c. heart murmurs.
d. systolic sounds.
b. Korotkoff sounds.
Where is the SA node is located?
a. left ventricle
b. right ventricle
c. left atrium
d. right atrium
d. right atrium
The stimulation of the heartbeat begins in the _____, which is why this structure is called the pacemaker of the heart.
a. right ventricle
b. sinoatrial node
c. atrioventricular node
d. left atrium
b. sinoatrial node
The electrical impulse is delayed in the AV node before propagating to the AV bundle (of His). During this delay the ______ contract.
a. left ventricle and aorta
b. right atrium and right ventricle
c. left atrium and left ventricle
d. right atrium and left atrium
d. right atrium and left atrium
A cardiac cycle is
a. the time it takes for blood to flow through all the entire body and return to the heart.
b. the time between each pulse.
c. the flow of electrical impulses through the heart.
d. one set of atrial contractions followed by one set of ventricular contractions.
d. one set of atrial contractions followed by one set of ventricular contractions.
The time period when the heart is contracting is called
a. diastole.
b. systole.
c. cardiac cycle.
d. pulse.
b. systole.
The time period when the heart is relaxing is called
a. pulse.
b. diastole.
c. cardiac cycle.
d. systole.
b. diastole.
One set of atrial contractions followed by one set of ventricular contractions is called the
a. sinoatrial node.
b. pulse.
c. cardiac cycle.
d. heart rate.
c. cardiac cycle.
When the heart contracts, this is due to an electrical change called
a. cardiac cycle.
b. hyperpolarization.
c. repolarization.
d. depolarization.
d. depolarization.
After contracting, the heart relaxes. This happens because of an electrical change called
a. hyperpolarization.
b. depolarization.
c. repolarization.
d. cardiac cycle.
c. repolarization.
How are the sounds of a heartbeat in a healthy heart created?
a. by heart valves opening
b. by heart valves closing
c. by atria moving against ventricles
b. by heart valves closing
The ventricles relax leading to
a. the first heart sound.
b. the second heart sound.
c. atria moving against ventricles.
d. heart valves opening.
b. the second heart sound.
The mitral (or bicuspid, or left atrioventricular) valve controls the flow between the
a. right atrium and right ventricle.
b. right atrium and pulmonary trunk.
c. left atrium and left ventricle.
d. left ventricle and aorta
c. left atrium and left ventricle.