Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

CardiovascularSystem

not including diagrams - use whiteboard for them

QuestionAnswer
Location of heart sits in midline cavity (mediastinum) superior to the diaphragm, medial to the lungs
function of CS - Transport respiratory gases (oxygen and carbon dioxide) - Transport nutrients absorbed from GI tract - Removal of metabolic waste products - Hormone circulation, Body temp reg - IS support, Blood clotting - Generate and sustain cardiac output
apex of heart the pointy bit, faces towards the bottom and the left
right side of heart receives blood from the systemic circulation and pumps this into the pulmonary circulation (towards the lungs, to be oxygenated by gas exchange)
left side of heart receives blood from the pulmonary circulation and pumps this into the systemic circulation (everything that does not go to and from the lungs, not the pulmonary artery or pulmonary vein)
right atrium - Step 1 - Receives deoxygenated blood from the systemic circulation, via the superior vena cava (SVC), inferior vena cava (IVC) and the coronary sinus - Divided from the RV via the tricuspid valve
Right Ventricle - Heart strings - Receives DO blood from RA, passes through the TV, and out through the pulmonary artery where it goes towards the lungs (for GE and oxygenation) - Divided from the pulmonary artery via the pulmonary valve
left atrium - Receives O blood from the lungs from the four pulmonary veins - Divided from LV via bicuspid valve
Left Ventricle - Receives O blood from the LA - Divided from the aorta via the aortic valve - Very thick muscle
Pericardium definition A membrane surrounding and protecting the heart, anchoring the heart to surrounding anatomical structures. Helps heart to anchor to breastbone (sternum), prevents heart filling with blood (overdistension)
pericardium contents Two parts - fibrous pericardium (prevents overdistension) and serous pericardium (visceral and parietal layers) Between these two layers is pericardial fluid, which reduces friction and ensures smooth movement when the heart beats
layers of the heart wall epicardium - external layer myocardium - middle layer endocardium - internal layer
epicardium (external layer) - consists of adipose tissue and fibroelastic tissue, contains blood vessels (hence why heart diagrams have blood vessels on them), contains fat
myocardium (middle) intermediate layer consisting of cardiac muscle, a lot thicker on the left side as it takes blood to systemic circulation whereas right only takes it to the pulmonary circulation. Angina - myocardium starved of oxygen. Myocardial infarction
endocardium (internal layer) - thin, smooth connective tissue membrane lining chambers
the heart beats between ____ each min, with each heartbeat representing ______ 50 -90 times , one cardiac cycle
contraction = relaxation = systole diastole
three steps in the CC atrial systole, ventricular systole, complete cardiac diastole
value opening and closure driven by... pressure differences
lub = dub = AV valve closure semilunar valve closure
p-wave depolarisation of atria in response to SA node triggering
PR interval delay of AV node to allow filling of ventricles
QRS complex depolarisation of ventricles, triggering main pumping contractions
t wave ventricular repolarisation
st segment beginning of ventricle repolarisation, should be flat
cardiac output volume of blood ejected from LV into systemic circulation in one min HR x SV SV = volume of blood pumped by LV in each contraction
factors impacting cardiac O preload and after load
blood pressure greatest in lowest in the force which blood exerts on the walls of BVs large arteries emerging from the heart large veins approaching the heart
systolic BP diastolic BP pulse pressure produced by left ventricular contraction (120mmHg) produced by complete cardiac diastole (80mmHg) difference between systolic and diastolic readings
ideal BP high low between 90/60 and 120/80 mmHg 140/90 and higher 90/60 or lower
Created by: user-2004250
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards