Anatomy and Physiology 2 Heart

Created by jerry_wilson9 

Upgrade to
remove ads

59 terms · Internal Heart Anatomy

annulus

fibrous tissue ring that forms the base of each heart valve

ascending, descending, aortic arch

list the 3 regions of the thoracic aorta

atrial appendages

what is another name for atrial auricles

brachiocephalic trunk, left common carotid, left subclavian

list the 3 aortic arch vessels

the brain

what is the region supplied by the left common carotid

the brain and right arm

what are the regions supplied by the brachiocephalic trunk

causes an increased risk of blood clot formation which can pass into the lungs or into the brain

briefly explain the clinical significance of stagnant blood flow in the auricles

chordae tendonae

these cord like structures extending form the free border of the tricuspid and mitral valve cusps/leaflets (distally)attach to the papillary muscles (proximally)

closed

is the aortic valve open or closed during diastole

coaptation

normal tight closure of valve cusps/leaflets is known as

composed of three cusps/leaflets, allows passive blood flow from right atrium to right ventricle, and prevents retrograde blood flow into the right atrium

briefly describe the tricuspid valve

composed of two cusps/leaflets, allows passive blood flow from left atrium to left ventricle, and prevents retrograde blood flow into the left atrium

briefly describe the mitral valve

cone shaped

what is the shape of the left ventricle

conus arteriosus of the right ventricle

what is the only area of the ventricles that does not have trabeculae carnae

coronary artery disease that caused mi

papillary muscle function is adversely affected by what heart disorder

crescent shape

what is the shape of the right ventricle

diastole

th coronary arteries are perfused during which phase of the cardiac cycle

electrical insulator, prevent overstretching of hear valves, foundation for heart valve structure, insertion point for atrial and ventricular myocardium

list the 4 functions of fibrous skeleton

endocardium

name the innermost layer of the heart wall

epicardium, visceral pericardium

a pericardial layer is synonymous with the outer layer of the heart wall

fibrous pericardium

what is a non-elastic tissue layer that composes the outermost layer of the pericardium. it is visible when the chest is opened

fibrous skeleton

what is the name of the tissue that fuses the heart valves together

from the superior,inferior vena cavas, and coronary sinus into the right atrium, through the tricuspid and into the right ventricle, through the pulmonary valve, into the pumonary trunk, into the pulmonary arteries and into the lungs. oxygenated blood from the lungs passes through the pulmonary veins into the left atrium, through the mitral valve and into the left ventricle, through the aortic valve and into the ascending aorta

describe the flow of blood throught the heart

the heart is compressed, so it does not pump blood well

what adverse effect does a cardiac tamponade have on heart function

increase force of atrial contraction without increasing heart mass

what is the function of pectinate muscles

interatrial septum

name the structure that divides the right and left atria

the left arm

what is the region supplied by the left subclavian

left ventricle

the apex of the heart is composed mostly of which chamber

limits movement of the heart within the mediastinum

what is the function of the pericardial sac

mediastinum

within what body compartment is the heart located

moderator band

this is an electrical short cut that conducts myocardial action potentials rapidly fron the inter ventricular septum to the papilllary muscles on the lateral side of the right ventricle

myocardium

which wall of the heart is the thickest

papillary muscles

cone shaped projections of myocardium (trabeculae carnae) located in both ventricles

pectinate muscles

raided muscle bundles in the anterior wall of the right atrium and the left and right auricles

pericardial space

what is the name of the potential space

pericardial tamponade

abnormally increased fluid volume in the pericardial space

pericardiocentesis

what medical procedure is employed to relieve a cardiac tamponade

perietal

which pericardium is adherent to the underside of the fibrous pericardium

prevent bubble formation as blood flows rapidly and turbulently through the ventricles

what is the function of trabeculae carnae

prevent relapse of valve cusps into atria (when the ventricles and papillary muscles contract the chordae tendonae are pulled tight preventing prolapse of valve cusps/leaflets into the atria)

what is the function of chordae tendonae

pulmonic and aortic

when the atria contract which valves are closed

pulmonic and aortic

when the ventricles contract which valves are open

the pulmonic valve closes when the blood pressure within the pulmonary trunk exceeds blood pressure within the right ventricle. the aortic valve closes when the blood pressure within the aorta exceeds the blood pressure within the left ventricle

briefly describe the mechanism of semilunar valve closure

the pulmonic valve closes when the blood pressure within the pulmonary trunk exceeds blood pressure within the right ventricle. the aortic valve closes when the bp within the aorta exceeds the bp within the left ventricle

briefly describe the mechanism of semilunar valve closure

right atrium, right ventricle, left atrium, left ventricle

4 chambers of the heart

right ventricle

Contraction of the inter-ventricular septum facilitates ejection of blood from which heart chamber

right ventricle

most of the anterior heart surface is composed of which heart chamber

serous pericardium

the perietal and visceral pericardia are known as

to insure one way blood flow

why is it important to have normal heart valve function

trabeculae carnea

raised muscle bundles located in both ventricles

tricuspid and mitral

which 2 heart valves are affected by the function of papillary muscles

tricuspid and mitral

when the atria contract which valves are open

tricuspid and mitral

when the ventricles contract which valves are closed

the tricuspid and mitral valves close when the blood pressure within the ventricles exceeds blood pressure within the atria

briefly describe the mechanism of AV valve closure

the tricuspid and mitral valves close when the blood pressure within the ventricles exceeds blood pressure within the atria

briefly describe the mechanism of av valve closure

tricuspid, mitral

name the 2 av valves

valve cusps/leaflets coapt normally because the papillary muscles are "pulling" on the chordae tendonae attached to the free border of the valve cusps/leaflets

what happens to the valves when the papillary muscles contract

vascular resistance

why is the left ventricular myocardium thicker than the right ventricular myocardium

ventricular myocardium contraction (as a unit)

what causes papillary muscle to contract

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set