Beth Anderson's Extra Credit due on 3/26/10 on the heart

50 terms by 141843 

Ready to study?
Start with Flashcards

Create a new folder

Advertisement Upgrade to remove ads

Beth Anderson's Extra Credit due on 3/26/10 on the heart

protects/anchors/prevents overfilling with blood

2 functions of fibrous pericardium

cardiology

the study of the normal heart and diseases associated with it

pericardial/mediastinum/thoracic

the heart is located in a ________ cavity, which is found in the ________ which is located within the _______ cavity

mediastinum

medial cavity space between the pleurae of the lungs that extends from the sternum to the vertebral column

2/3, left

approximately _____ of the hearts mass lies to the ______ of the mediasternal line

pericardium

the heart is enclosed in a double-walled sac called the what

fibrous pericardium

loose fitting superficial part of pericardium

serous pericardium

deep to fibrous pericardium; a thin, slippery, two-layer serous membrane

visceral layer

lines external heart surface

pericardial cavity

located between the two layers of serous pericardium, is filled with a thin layer of pericardial fluid

pericardial fluid

pericardial cavity is filled with what

reduce friction

function of pericardial fluid

epicardium

external layer of the heart

epicardium/myocardium/endocardium

list 3 layers of heart wall

endocardium

inner layer of heart wall

epicardium

visceral layer of serous pericardium

epicardium

smooth, slippery texture to outermost surface

95

_____% of heart is cardiac muscle

myocardium

layer of heart; cardiac muscle

endocardium

smooth lining for chambers of heart, valves, and continuous with the lining of large blood vessels

chambers of heart/valves/lining of blood vessels

where is endocardium found

4

how many chambers does the heart have

interatrial septum

the 2 atria are separated from each other by what

interventricular septum

the 2 ventricles are separated from each other by what

septum

a solid structure that separates two cavities

anterior interventricular sulcus

marks the anterior position of the septum separating right and left ventricles

posterior interventricular sulcus

provides similar landmarks as anterior interventricular sulcus on the posterior side

myocardium

the thickness of the ________ of the 4 chambers varies according to the function of each chamber

atria walls

are thin because they deliver blood to the ventricles

ventricle walls

are thinner because they pump blood greater distances

thinner, lungs

the right ventricle walls are _____ than the leaft because they pump blood into the _______, which are nearby and offer very little resistance to blood flow

thicker

the left ventricle walls are ______ because they pump blood through the body where the resistance to blood flow is greater

atria

the 2 upper chambers of the heart are called what

auricles

small earlike projections, extend anteriorly from the atria and help to increase atrial volume

interatrial septum

bears a shallow depression that marks the spot where the foramen ovale existed in the fetal heart

fossa ovalis

shallow depression on interatrial septum

foramen ovale

the fossa ovalis marks the spot where the _____ ______ existed in the fetal heart

reservoirs

atria function primarily as what

superior vena cava/inferior vena cava/coronary sinus

list 3 major veins entering the right atrium

superior vena cava

returns blood from the regions superior to the diaphragm

inferior vena cava

returns blood from regions below the diaphragm

coronary sinus

returns blood from the myocardium of the heart

tricuspid valve

blood flows through which valve from right atria to right ventricle

left atrium

forms most of the base of the heart

4 pulmonary veins

what returns blood from the lungs

bicuspid valve

valve between left atria and left ventricle

left atrioventricular, mitral, bicuspid

list 3 names of bicuspid valve

ventricles

the two lower chambers of the heart

left ventricle

dominates the hearts posterior inferior surface

ventricles

major pumping chambers of the heart

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