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A&P 11 Unit 16 lab
Cardiovasular system part 1 the heart
41
Anatomy
Undergraduate 1
02/18/2011

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Term
The systemic circuit carries blood to and from the .....
Definition
body
Term
The pulmonary circuit carries blood to and from the....
Definition
lungs
Term
What are the 3 types of blood vessels?
Definition
Arteries, Veins, capillaries
Term
Arteries carry blood....
Definition
away from the heart
Term
Veins carry blood.....
Definition
to the heart
Term
Capillaries are networks between ____ and ______.
Definition
Term
What are also called exchange vessels?
Definition
Capillaries
Term
What exchanges materials between blood and tissues?
Definition
capillaries
Term
What materials do capillaries exchange? 3 of them
Definition
dissolved gases, nutrients and wastes.
Term
What is the general circulation through the body.
Definition
Body..Sup & Inf Vena Cava.. RA..RV.. PA..lungs..PV..LA..LV..Aorta..Body
Term
Cardiac Muscle Tissue
- Intercalated discs
Interconnect__________
Secured by ________
Linked by__________
Propagate__________
Definition
-cardiac muscle cells
-desmosomes
-gap junctions
-action potentials
Term
____________ Supplies blood to muscle tissue of the heart.
Definition
Coronary Circulation
Term
__________ Supplies heart muscle with nutrients, oxygen, and removes wastes.
Definition
Coronary Circulation
Term
Which ventricle contracts more forcefully and develops higher pressures?
Definition
Left
Term
Do the two ventricles contract simultaneously?
Definition
Yes
Term
Resistance in the pulmonary circuit is low due to _______.
Definition
high capillary density (high surface area
Term
The low pressure in the pulmonary circuit also protects the ________ of the lungs.
Definition
delicate blood vessels
Term
There is low pressure in the pulmonary circuit because???
Definition
Because there is a high capillary density (high surface area)
Term
What protects the delicate blood vessels of the lungs.
Definition
the low pressure in the pulmonary circuit.
Term
Fibrous Pericardium
Definition
Outer layer of the membrane around the heart. Anchors the heart to surronding structures. Made of collagenous connective tissue that prevents overfilling.
Term
Serous pericardium (parietal and visceral layers)
Definition
It is the inner layer. Contains two layers within itself. Parietal, outer, which is fused to the fibrous pericardium. Visceral, inner, which is attached to the heart. Also known as the epicardium.
Term
Actual muscle of the heart.
Consists of cardiac muscle and fibrous skeleton
Definition
Myocardium
Term
A type of simple squamous epithelium called endothelium.
Definition
Endocardium. Part of the epicardium
Term
The atria that recieves deoxygenated blood
Definition
right
Term
Atria that recieves oxygenated blood from the pulmonary veins.
Definition
left
Term
Ventricle that recieves deoxygenated blood from the atria
Definition
right
Term
Ventricle that ejects blood to the aorta
Definition
left
Term
Valve inbetween right atria and ventricle
Definition
tricuspid valve
Term
valve between left atria and ventricle
Definition
mitral valve
Term
What are the two semilunar valves?
Definition
Pulmonary Valve and Aortic Valve
Term
Valve between right ventricle and pulmonary trunk
Definition
pulmonary valve
Term
Valve between left ventricle and aorta
Definition
aortic valve
Term
Each cusp of the atrioventricular valves is attache to collagenous "strings". They are tendon like and connect valves to papillary muscles.... called....
Definition
Chordae tendineae
Term
Papillary muscles
Definition
Muscles within the ventricular walls. Prevents valves from everting into the aorta by attaching to the chordae tendineae.
Term
Drains systemic circuit and recieves nutrients and gas exchange. Delivers deoxygenated blood to the right atrium.
Definition
superior vena cava
Term
large vein that collect blood inferior to the heart and returns it.
Definition
inferior vena cava
Term
Recieves blood from the right ventricle. Splits into L and R
Definition
Pulmonary artery (trunk)
Term
Returns blood from the pulmonary circuit to the left atrium.
Definition
pulmonary veins
Term
The main systemic trunk of the arterial system of the body that emerges from the left ventricle
Definition
aorta
Term
SA node (sinoatrial)
Definition
A small mass of cardiac muscle fibers located in the right atrium. Inferior to S.vena cava that spontaneously depolarizes and generates a cardiac action potential of 100 beats/min.
Term
Natural pacemaker of the heart
Definition
SA node
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