cardio system

the cardio system is a ___ system

closed

what allows blood to circulate

blood vessels

what surrounds the heart

pericardium (paritial is further visceral is inner)

myocardium is where

under pericardium

what recives

atria

what discharges

ventricles

separates two ventricles

interventricular septum

separates two atria

interatrial septum

what direction does pulmonary circulation go

right left right

where does pulmonary circulation flow

to the lungs thru pulmonary arteries (returns to heart thru veins)

what direction does systemic circulation go

left, thru body tissues, right

valve flows between atria and ventricles (bicuspid-left, tricuspid-right)

atrioventricular valves

valve flows between ventricles and arteries (pulmonary, aortic semilunar)

semilunar valves

anchor av valves

tendineae (heart strings)

open during relaxation, close during ventricular contraction

av valves

closed during relaxation, open during ventricular contraction

semilunar valves

branch from aorta to supply oxygenated blood to heart muscle

coronary arteries

drains myocardium of blood

cardiac veins

a large vein outside heart, receives blood from cardiac veins

coronary sinus

the hearts pacemaker

sinoatrial node

node at the junction of the atria and ventricles

atrioventricular node

bundles that are in the septum

atrioventricular bundle

av closes

Lub sound

semilunar closes

dub sound

how many beats per minute does the intrinsic conduction enforce

75

what conducts heart contraction

sinotrial node

CO=?

HR x SV

BPM is represented by what in the equasion

CO

Blood per beat is represented by what

SV

Heart rate is represented by what

HR

order of blood flow (arteries-veins)

Arteries > arterioles > capillaries < venules < veins

layers of tunics

tunica intima (inner), tunica media (mid), tunica externa (outer)

whats thicker arteries or veins

arteries

pressure at peak of contraction

systolic pressure (s/d)

pressure at lowest point of contraction

diastolic pressure (s/d)