Advertisement Upgrade to remove ads

Systole

Ventricular contraction phase of the cardiac cycle

Diastole

Ventricular relaxation phase of the cardiac cycle, dilation state of the heart, the rest between systoles

Atrium

Upper chamber of the heart

Ventricles

the two lower chambers of the heart, and they pump blood out to the lungs and body (thick walled chambers)

4 Chambers

The heart has ________? Which are: Right atrium, left atrium, right ventricle, left ventricle

Arteries

Blood leaves the heart through the _________?

Veins

Blood returns to the heart through the _______?

Systematic Circulation

(General Circulation) carries blood from the heart and throughout all parts of the body

Pulmonary Circulation

(Cardiopulmonary Circulation) Carries blood from the heart to the lungs and back to the heart

Apex of the heart

(Conical tip) lies on the diaphragm and points to the left of the body. It is here where the heartbeat is most easily felt and heard through the stethoscope.

Cardiac Output

Total volume of blood ejected from the heart per minute
Stroke volume X Heart Rate = Cardiac Output
60 ml X 80= 4,800 ml/min

Pericardium (Epicardium)

Covering of the heart, loose fitting double layer sac that encloses the heart

Serous Fluid

(pericardial fluid) Fluid between the parietal pericardium and visceral pericardium which prevents friction as the heart beats

Myocardium

Middle layer of the heart, made of cardiac muscle, Contains the septum (thick muscular wall that completely seperates the blood on the right side from blood on the left side of the heart)

Endocardium

Smooth inner lining, permits blood to move easily through the heart without agglutinating (Clumping)

Pump during working phase of the heart cycle

Right Ventricle pumps blood into the lungs
Left Ventricle pumps blood to the tissues of the body

Vena Cava

large venious blood vessels which bring deoxygenated blood to the right atrium from all parts of the body

Coronary Sinus

(a trough in the posterior wall) that collects blood in the right atrium

Pulmonary artery

Takes blood away from the right ventricle to the lungs for oxygen

Pulmonary veins

bring oxygenated blood from the lungs to the left atrium

Aorta

takes blood away from the left ventricle to the rest of the body

Heart Blood Flow

The heart has 4 valves which permit the blood flow in one direction only, these valves open and close during the contraction of the heart, preventing the blood from flowing backwards

Atrioventricular

________ Valves are located between the atria and the ventricles.

Tricuspid Valve

positioned between the right atrium and right ventricle

Chordae Tendinae

small fibrous strands connecting the edges of the tricuspid valve to the papillary muscle that are projections of the myocardium

Bicuspid

(mitral valve) located between left atrium and the left ventricle

Semilunar Valves

are located at the bases of large vessels that carry blood from the ventricles

Heart Sounds

Lubb dupp sounds- sounds made by the valves during the cardiac cycle

Lubb

1st heart sound (S1) Sound made when the tricuspid and bicuspid (mitral) AV valve closes between the atria and ventricles (systole)

Dupp

2nd heart sound (S2) Cause by the semilunar valves in the aorta and the pulmonary arteries closing (diastole)

Left Atrium

Recieves oxygenated blood from pulmonary veins

Serous Fluid

(Pericardial Fluid) Fluid between the parietal pericardium and the visceral pericardium which prevents friction as the heart beats.

Right Atrium

Receives deoxygenated blood from systemic veins

Echo=

Sound

Sinoatrial Noda (SA Node)

Pacemaker of the heart

Heart Conduction Sequence

SA Node, AV Node, AV Bundle, Bundle Branches, Purkinje fibers, contraction of myocardium

Arrhythmias

Irregular Heart beat

Cardio

Heart

Brady

Slow

Tachy

Fast

Isch

Hold Back

Echo

Sound

End

Within

Gram

Record Of

Electrocardiogram

Records electrical activity of the heart (ECG or EKG)

Bradycardia

Slow heart rate less than 60 BPM

Tachycardia

Fast heart rate more than 100 BPM

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set