Electrical Cardiac Lesson Heart

The Heart

The Chambers

Right and left atrium

Right and left ventricles

The Valves

pulmonary- right ventricle to the pulmonary artery

tricuspid-right atrium to ventricle

aortic- left ventricle to the aorta

mitral-left atrium to left ventricle

Multiple Choice

the deoxygenated blood enters the ____ from the vena cava

• right atrium

• left atrium

• right ventricle

• left ventricle

Multiple Choice

blood moves from the right atrium through the

• mitral valve

• tricuspid valve

• pulmonary valve

• aortic valve

Multiple Choice

the closing of the tricuspid causes the

• LUB sound

• DUB sound

• BUMP sound

• THUMP sound

Multiple Choice

the blood enters the left ventricle through the _____ causing the _____ sound

• mitrial, DUB

• tricuspid, DUB

• mitrial, LUB

• tricuspid, DUB

The heart muscle

myocardium - thickest layer of the heart

left ventricle is thicker than the right to move blood through the entire body

Septums

atrial and ventricular

separates the right and left sides of the heart

the bundle of His is located

Multiple Choice

A defect in the atrial or ventricular septum could result in

• mixing of oxygenated and deoxygenated blood

• hypertension by increased pressure

• heart attack

• the mitral valve not closing

Multiple Choice

If the heart is having to pump harder due to vessel constriction and lack of flexibility the cardiac muscle could

• enlarge

• shrink

• explode

• deteriorate

Systole

the contraction phase

diastole

the relaxation phase

Coronary arteries

branches to the right and left

left has more branches due to thicker myocardium

Coronary sinus

the veins of the heart

Multiple Choice

the blood supplied to the heart by the coronary arteries is impeded by the systolic pressure during the contraction

• True

• False

Multiple Choice

during systole of the right atrium blood is forced into the

• left ventricle

• right ventricle

• pulmonary artery

• aorta

Multiple Choice

during atrial diastole blood drains into the

• ventricle

• atrium

• aorta

• vena cava

Electrical Nodes

SA- sinusoidal (pacemaker)

AV- delayed .1s for atrial contraction

bundle of His- branching to right and left ventricles

purkinje fibers- the terminal branches

Multiple Choice

atrial contraction occurs at

• 1

• 2

• 3

• 4

• 5

Multiple Choice

ventricular relaxation occurs at

• 1

• 2

• 3

• 4

• 5

Multiple Choice

ventricular contraction occurs at

• 6

• 7

• 8

Pressure

Sphygmomanometer

Korotkoff sounds

 the movement of turbulent blood through a blood vessel

Multiple Choice

The sounds you hear when taking someone's blood pressure the old fashion way

• the heart beat

• Korotkoff sounds

Multiple Choice

normal blood pressure is

• 120/80

• 80/120

• 190/76

• 185/120

Multiple Choice

the top number represents the _____ BP

• systolic

• diastolic

• mitotic

Multiple Choice

systolic represents when the heart

• ventricle is contracting

• ventricle is relaxing

• atrium is contracting

• atrium is relaxing

other heart parameters

• pulse pressure- the difference between the systolic and diastolic

• Mean arterial pressure-MAP = diastolic BP + ((systolic-diastolic BP) / 3)

• Pulse- Indicates the strength of the ventricular contractions

Multiple Choice

pulse pressure should be within what percentage range

• 25

• 35

• 55

• 90

Multiple Choice

what is the medical term when cells are deprived of oxygen

• hypoxia

• deoxygenated

• unoxygenated

• choking

Multiple Choice

the expanding and recoiling of the arteries is measured as a patients

• BP

• pulse

• MAP