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Ch. 17-18
Heart Anatomy, Blood, and
65
Anatomy
Undergraduate 2
09/15/2008

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Cards

Term
What is the location of the heart? superior to what?left of the what? Anterior and posterior to what?
Definition
SUPERIOR surface of the diaphragm
LEFT of the midling
ANTERIOR to the vertebral column
POSTERIOR to the sternum
Term
What organs are included in the cardiovascular system?
Definition
the heart, the arteries, veins, and capillaries
Term
The pulmonary circuit and the systemic circuit are parts of what system/
Definition
Cardiovascular system
Term
The PULMONARY CIRCUIT controls what and communicates with what?
Definition
It controls the right side of the heart, it communicates with the lungs
Term
The SYSTEMIC CIRCUIT controls what and communicates with what?
Definition
controls the left side of teh heart, and it comunicates with the bady tissues
Term
What is the PERICARDIUM?
Definition
a double walled sac around the heart
Term
The pericardium is composed of how many layers?
Definition
3 layers
Term
What is the superficial pericardium layer called?
Definition
The fibrous pericardium
Term
The ______ layer or epicardium lines the surface of the heart.....or the heart surface.
Definition
visceral
Term
The ______ layer lines the internal surface of the fibrous pericardium....or the _______ ________.
Definition
Parietal; cavity wall
Term
The parietal layer and the visceral layer are seperated by the fluid filled _______ _________
Definition
Pericardial Cavity
Term
Preventing overfilling of teh heart with blood....this is the job of what layer of the heart?
Definition
The Pericardium
Term
What protects and anchors the heart in...
Definition
the pericardium
Term
What allows for the heart to work in a relatively friction free environment?
Definition
The pericardium (layer of the heart)
Term
What are the THREE pericardial layers that make up the HEART WALL?
Definition
1. Epicardium
2. Myocardium
3. Endocardium
Term
What is another name for the EPICARDIUM?
Definition
Visceral pericardium
Term
What's the visceral layer of the serous pericardium?
Definition
The epicardium
Term
__________is a thick, cardiac muscle layer forming the bulk of the heart.
Definition
MYOCARDIUM
Term
___________is the endothelial layer of teh inner myocardial surface.
Definition
ENDOCARDIUM
Term
The fibrous skeleton of the heart provides support and attachment for the ________ muscle.
Definition
CARDIAC
Term
The fibrous skeleton of the heart consists of what?
Definition
crisscrossing, interlacing layer of collagen and elastic fibers
Term
Explain the Pulmonary circuit: Superior and inferior vena cava ->
Definition
right chambers of the heart -> pulmonary trunk (divides into R and L pulmonary arteries) -> lungs -> R and L pulmonary veins -> left chambers
Term
Explain the Systemic Circuit: Left chambers ->....
Definition
aorta (3branches) ->body (arteries to capillaries to veins) -> superior and inferior vena cava
Term
What is the functional blood supply to the heart muscle itself?
Definition
Coronary Circulation
Term
_________ ________ ensure blood delivery to the heart even if major vessels are occluded.
Definition
COLLATERAL ROUTES
Term
Coronary vessels do what?
Definition
they nourish cardiac muscles
Term
The LEFT CORONARY divides into what?
Definition
The ANTERIOR IV ARTERY and the CIRCUMFLEX ARTERY
Term
The RIGHT CORONARY divides into what?
Definition
The POSTERIOR IV ARTERY and the MARGINAL ARTERY
Term
ANTERIOR IV ARTERY supplies blood to....
Definition
IV septum and anterior wall of ventricle
Term
CIRCUMFLEX ARTERY supplies blood to the....
Definition
left side of coronary sulcus, and the L atrium and posterior wall of L ventricle
Term
POSTERIOR IV ARTERY supplies blood to the.....
Definition
posterior ventricle walls
Term
MARGINAL ARTERY supplies blood to the....
Definition
Lateral R chambers
Term
Coronary veins return what?
Definition
deoxygenated blood
Term
Coronary veins return what?
Definition
deoxygenated blood
Term
Coronary veins return what?
Definition
deoxygenated blood
Term
Name all the Coronary Vessels?
Definition
1. Coronary Veins
2. Great Cardiac
3. Anterior Cardiac
4. Small Cardiac
5. Middle Cardiac
Term
All of the Coronary Vessels drain into the what?
Definition
Coronary Sinus
Term
The Coronary sinus drains into the what?
Definition
The right atrium
Term
Atria (atrium) are the ______ chambers of the heart
Definition
receiving
Term
Each atrium has a protruding _______.
Definition
Auricle (increases volume)
Term
__________muscles (comb) mark atrial walls
Definition
Pectinate muscles
Term
Blood enters the right atrium from the _______ and __________ ______ ______ and the ________ __________.
Definition
Superior and inferior vena cava, coronary sinus
Term
Blood enter the left atrium from the _____ _______`
Definition
Pulmonary Veins
Term
What are the discharging chambers of the heart
Definition
Ventricles
Term
Papillary muscles are what? Whats another name for them?
Definition
Valves
Term
"crossbars of flesh"- What is this talking about?
Definition
trabeculae carnae muscles
Term
Papillary and trabeculae carnea muscles mark __________ _________.
Definition
Ventricular Walls
Term
The right ventricle pumps blood in the _______ ________
Definition
pulmonary trunk
Term
The left ventricle pumps blood in the _____.
Definition
Aorta
Term
What insures unidirectional blood flow through the heart?
Definition
Heart Valves
Term
What prevents backflow into the atria when ventricles contract?
Definition
Atrioventricular valves (AV valves)
Term
The atrioventricular valves (AV valves) lie between the ______ and the _______.
Definition
atria; ventricles
Term
The right AV valve has how many cusps?
Definition
Three
Term
The Left AV valve has how many cusps?
Definition
Two
Term
What does the acronym L.A.M.B stand for?
Definition
Left AV- Mitral, Bicuspid (Valves)
Term
What is the name of the 3 cusps in the Right AV valve?
Definition
Tricuspid Valve
Term
What anchors the AV valves to papillary muscles?
Definition
Chordae tendineae
Term
What valve lies between the Left Ventricle and the Aorta
Definition
Aortic Semilunar Valve
Term
What valve lies between the Right Ventricle and Pulmonary Trunk?
Definition
Pulmonary Semilunar Valve
Term
Semilunar valves prevent backflow of blood into the ________.
Definition
ventricles
Term
Explain the pathway of blood through the heart and lungs....start with the Right Atrium
Definition
Right Atrium-> tricuspid valve-> right ventricle-> pulmonary semilunar valve-> pulmonary arteries-> lungs-> pulmonary veins-> left atrium-> bicuspid valve-> left ventricle-> aortic semilunar valve-> aorta-> systemic circulation
Term
What is the AV valve mechanic for when the ventricles are relaxed?
Definition
-the pressure drops
-semilunar valves close*
-AV valves open*
-blood flows form atria to ventricles
Term
What is the AV valve mechanic for when the Ventricles are contracted?
Definition
-AV valves close*
-pressure rises
-semilunar valves open*
-blood flows into great vessels
Term
One of the AV valve mechanics is the ventricles being contracted. When this happens the AV valves close...what's significant about them closing?
Definition
it makes the papillary muscles contract and pull on chordae tendineae to prevent prolapse
Term
What is prolapse?
Definition
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