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Bio 160 (Heart) 1/4
Exam 3
20
Anatomy
Undergraduate 1
03/29/2009

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Cards

Term
The heart is within the
Definition
mediastinum
Term
The heart is bordered laterally by the
Definition
lungs
Term
The heart is bordered posteriorly by the
Definition
vertebral column
Term
The heart is bordered anteriorly by the
Definition
sternum
Term
The heart lies below the _____ rib.
Definition
Second
Term
Space between the parietal and visceral layers of the pericardium that contains a small amount of serous fluid that reduces friction between the pericardial membranes as the heart moves within them.
Definition
Pericardial cavity
Term
The visceral portion of the pericardium on the surface of the heart.
Definition
Epicardium
Term
Thick middle layer of the heart that consists mostly of cardiac muscle tissue that pumps blood out of the heart chambers.
Definition
myocardium
Term
The inner layer of the heart that consists of epithelium and connective tissues that contains many elastic and collagenous fibers.
Definition
endocardium
Term
Blood that is low in oxygen and high in carbon dioxide enters the right atrium through the
Definition
venae cave and coronary sinus.
Term
Blood flows from the venae cave to the
Definition
tricuspid valve.
Term
Blood flows from the tricuspid valve to the
Definition
chamber of the right ventricle
Term
When the right ventricular wall contracts, the tricuspid valve closes and blood moves through the
Definition
pulmonary valve
Term
Blood flows from the pulmonary valve and into the
Definition
pulmonary trunk and its branches.
Term
The heart consists of ____ chambers.
Definition
4
Term
After the left ventricle contracts, the _____ closes and the ______ opens, to allow blood to flow from the _____into the_______.
Definition
aortic valve; mitral valve; left atrium; left ventricle
Term
As the left atrium contracts, more blood flows into the
Definition
left ventricle.
Term
When the left ventricle contracts with the mitral valve open, the mitral valve closes and the aortic valve opens, so blood flows into the
Definition
aorta.
Term
Part of the heart that seals the heart valves when it’s closed
Definition
valve cusps
Term
There are three cusps for each valve except for the _______, which has only two.
Definition
mitral valve
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