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38 Cards in this Set
- Front
- Back
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Happens when heart is contracting.
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Depolarization
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Happens when heart is resting.
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Repolarization
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SAABP
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Sequence of Excitation
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*A.K.A Pacemaker
*Electrical impulses begin in the corner of right atruim and travels through the myocardium of both atriums |
Sinoatrial Node (SA Node)
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A.K.A Secondary Pacemaker
*goes down through the interventricular septum |
Atrioventricular Node
(AV Node) |
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Carries impulse to purkinjie fibers
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Atrioventricular bundle: bundle of His
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conveys impulse down the interventricular septum
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Bundle Branches
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*Specialized conduction type tissues
*Milks the ventricles causing myocardium to contract |
Purkinjie Fibers
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High in CO2 with Low O2;
towards the heart |
Venus Side
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Low CO2 with High O2;
away from the heart |
Arterial Side
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This type of congestive heart failure consist of:
*swollen ankles *blood having a hard time getting to lower extremities because the Right ventricle isn't working |
Right CHF
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This type of congestive heart failure consist of:
*Pulmonary Edema *Not getting rid of the blood from lungs so alveoli are filling up |
Left CHF
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What forms after the Arteries?
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*Arterioles
*Capillaries (where exchange takes place) *Venules *Veins |
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*Valves prevent backflow
*Leg movement pushes blood back up from lower extremeties |
Veins
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What are the three coats of an artery?
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*Tunica Intima
*Tunica Media *Tunica Adventicia |
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most internal coating in an artery
*A.K.A Endothelium *Thin layer |
Tunica Intimia
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the middle coating in an artery, that contains smooth muscles
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Tunica Media (muscularis)
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*outermost coating in an artery
*Made of irregular FCT |
Tunica Adventicia
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*contains vaso vasorum
*"vessel of the vessel" *contains blood vessels that feed the artery |
Tunica Adventicia
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What organ is the first to get oxygenated blood?
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The Heart
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What is the first branch of the aorta
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Brachiocephalic (about 2 inches)
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Bifurcates into the:
*Right common carotid *Right subclavian (blood supply to the right arm) |
Brachiocephalic
(Aorta) |
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What is the second branch of the aorta?
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Left Common Carotid
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What is the third branch of the aorta that supplies the left arm?
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Left Subclavian
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True or False
Artery distribution is not symmetrical at the aorta |
True
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*Carotid Sinus
*Carotid Body |
Common Carotid Artery
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Before the common carotid bifurcates, there is a swelling/bulging, what is it called?
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Carotid Sinus
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*It detects changes in the BP
*decrease in BP= heart beats stronger |
Carotid Sinus
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A group of specialized cells at the bifurcation that are sensitive to changes in partial pressure of O2 and CO2
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Carotid Body
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*Increase in CO2 and decrease in O2= heart beats faster
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Carotid Body
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At the level of the hyoid bone, what does the common carotid bifurcates into?
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Internal and External Carotids
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*Main Artery to supply the brain with blood
*It bifurcates and moves laterally through the carotid canal towards the base of the skull |
Internal Common Carotid
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Which common carotid do we deal with?
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External Common Carotid
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What keeps the blood from flowing in one direction?
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Valves
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Where does the right common carotid come from?
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Brachicephalic
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Where is the Aorta symmetrical at?
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Aortic Arch
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Lymphatic channels (vessels) have what?
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one-way valves
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How does lymph flow?
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the muscle milks
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