Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Three layers of the heart

Endocardium, Myocardium, Epicardium

Erb's Point

located at the third intercostal space to the left of the sternum

SA node

the primary pascemaker of the heart, located at the junction of the superior vena cava and the right atrium

Most comman clinical manifestations with Cardiac

chest pain, dyspnea, peripheral edema, weight gain,fatigue, dizziness,synocope


the heart muscle


electrical activation of a cell by the influx of Na into the cell while K exits the cell


return of the cell to the resting state caused by re-entry of K and exit of Na

Effective refractory period

phase in which cells are incapable of depolarizing

Relative refractory period

phase in which cells require a stronger-than-normal stimulus to depolarize

Stroke volume

the amount of blood ejected wiht each heartbeat

Cardiac out put

amount of blood pumped by the ventricle in liter per min


degree of strech of the cardiac muscle fiber at the end of diastole, Frank Starlin law


ability of the cardiac muscle to shorten in responce to stimulation, Increased by catecholamines, SNS, some medications and decreased by hypoxemia, acidosis, and some medications

After load

resistance to ejection of blood from the ventricle, affected by systemic vascular resistance annd pulmonary vascular

Ejection fraction

percent of end-diastolic volume ejected with each heartbeat

Control of heart rate

Autonomic nervous system and baroreceptors

Control of Strike volume

Preload, afterload, contarctility

factors that influance the development of Hypertension

^sympathetic nervous system, ^reabsorption of Na and Chloride,and water by the kidneys, ^activity of the renin-angiotensin system, Decreases vasodiation, insulin resistance

Manifestation of Hypertension

no symptoms other then elivated BP

Late symptoms of Hypertension

Symptoms are seen late and very dangerous, Eye changes, Renal damage, Myocardial infaraction, Cardiac hypertrophy, stroke


PVR increases , widened paulse pressure, systolic HTN with normal DBP

Major Risk factors for Cardio

Hypertension, smoking, obesity, physical inactivity, dyslipidemia, DM, microalbuminuria or GFR <60,old age, family history

Classification of HTN (JNCVII) normal


Clasification of HTN (JNCVII) pre-hypertenson


Clasification of HTN (JNCVII) Stage 1


Clasification of HTN (JNCVII) Stage 2


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 and try again


Reload the page to try again!


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

Voice Recording