Flashcards in Chapter 23 Deck (40)
Heart contracts and relaxes rhythmically
Heart relaxes blood flows from veins into all 4 heart chambers during
heart contracts and blood flows from atria into ventricles
The basic tempo of the heartbeat is set by
the SA node
Why do we need oxygen?
Required to harvest energy from food effeciently
Circulatory systems receive
nutrients, exchange gases, and remove wastes.
Mammals have a # Chamber heart?
How many types of vessels are there?
What are the different types of vessels?
carry blood away from the heart
return blood to the heart
convey blood between arteries and veins
Name two types of cardiovascular diseases:
Open circulatory systems
bugs- consist of
blood that directly bathes the cells
Body -> Right Atrium -> Right Ventricle -> Lungs -> Left Atrium -> Left Ventricle -> Body
Right Atrium ->
Right Ventricle ->
Left Atrium ->
Left Ventricle ->
deoxygenated Blood comes into the heart through:
superior or inferior vena cava
deoxygenated Blood leaves the heart and goes to lungs thru the
Oxygenated blood returns to the heart via the
left atrium through the PULMONARY VEIN
oxygenated blood leaves thru the
heart rate is the number of heart beats per
defect in heart valves that permits a backflow of blood
what sets the tempo of the heartbeat
SA (sinoartrial) node
death of brain tissue from bad arteries