Cardio-Respiratory System Flashcards
What muscles are most important for respiratory system
Intercostals and Diaphragm
tidal volume
amound of air moved in and out in one breath
residual volume
air left in lungs after max exhale
vital capacity
amount of air we can inhale and exhale in one breath
Which side of the heart pumps oxygenated blood to the body
left
which side fo the heart pumps blood to the lungs
Right
Which chambers receive blood
atria
which chambers pump blood out of the heart
ventricles
what does bloof transport
o2, nutrients, waste and hormones
plasma contains
sales, fats, horomones and sugars
what do red blood cells carry
hemoglobin
what do platelets do
control bleeding and assist in clothing
what is the stroke bolume
amount of blood in one pump
what is the cardia output
amount of blood pumped in 1 minute
bicuspid valve
stops backflow of blood from LV to LA
aortic valve
stops backflow of blood from aorta to LV
pulmonary valve
stops backflow from pulmonary artery to RV
coronary arteries
branch from aorta where it emerges from LV
myocardium
relies on aerobic respiration, has own blood transport system
left anterior descending artery
supplied oxygenated blood to anterior LA and LV
left circumflex artery
o2 blood to posterior portion of LA and LV
right coronary artery
o2 blood to RA and RV
coronary sinus
empties deoxygenated blood from myocardium into RA to join other blood from body
short term changes during a session on cardio system
increased coronary blood flow due to dilation
diastole reduces
heart rate increases
increased stroke volume
cardia output increases
cardiac drift
heart rate increases through a session despite plateu of steady workout due to time, heat, loss of electrolytes
long term adaptations to cardio-respiratory system
faster recovery
more relaxed and efficient
increased stroke volume
lungs become more efficient
heart becomes bigger
lower BP
lower RHR
new capilleries
More HDL than LDL
valsalva manuver
holding breath to stabilize loads
this constricts veins, BP drops, venous return drops
rebound effect when breathing again
atherosclerosis
build up of fat in artery walls- most likely in aorta and coronary artery
fat hardens to plaque
arteriosclerosis
hardening of arteries due to aging, loss of elastiicty in arteries
