Download Cardiovascular System - Mohawk Valley Community College

Cardiovascular System
My Achin Heart
I. Functions
• A. Circulate important
materials
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oxygen
wastes
endocrine hormones
glucose
• B. Help regulate body
temperature
• C. Help control pH
• D. Combat pathogens
II. Terminology
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A. Artery
B. Vein
C. Atrium
D. Ventricle
E. Pulmonary circuit
F. Systemic circuit
G. Heart membranes
III. Gross Anatomy of Heart
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A. SVC & IVC
B. Right atrium
C. Tricuspid valve
D. Right ventricle
E. Pulmonary artery
F. Pulmonary veins
G. Left atrium
H. Bicuspid valve
I. Left ventricle
J. Aortic arch
Labeled diagram of the heart
IV. Valves and one-way flow
• A. Atrioventricular valves
– 1. chordae tendonae
– 2. bicuspid
– 3. tricuspid
• B. Semilunar valves
– 1. Pulmonary semilunar
– 2. aortic semilunar
C. Valve problems
• 1. rheumatic
fever
-untreated strep
infection
-immune system
attacts heart valve
-becomes stiff and
does not meet in
the middle
2. Prolapsed valve
• a. Normal valve
• b. Mitral valve
normal culprit
3. Valve stenosis
• a. Calcification
• b. regurgitation
VI. Coronary Circulation
• A. Heart muscle
nutrition
• B. Coronary
atreries
• C. Coronary
veins
D. Coronary artery disease
• 1. Atherosclerosis
• 2. Stents
• 3. Bypass surgery
• 4. Infarct
VII. Excitation-Contraction Coupling
• A. Intrinsic
conduction system of
the heart.
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SA Node
AV Node
Bundle of His
Bundle branch
Purkinje fibers
B. Cardiac cycle
• 1. systole
• 2. diastole
C. Heart Sounds
1. Door opening vs
closing
2. Lub
3. Dup
4. Heart murmurs
D. ECG Tracing
• 1. P wave
• 2. QRS complex
• 3. T wave
• 4. Abnormalities
VIII. Cardiac output
• A. Cardiac output = stroke volume X heart rate
• B. Stroke volume
– 1. 60%
– 2. Starling’s law of the heart
– 3. venous return
C.
Heart Rate
1. ANS control
2. Hormonal control