Cardiovascular system Flashcards
(31 cards)
What is part of the circulatory system?
Hart, blood vessels, blood
What are some adaptations of the capillaries?
.1 cell thick
.short diffusion distance
.moist- helps the exchange of gasses
Adaptions of Alveoli?
.millions of them- large surface area
.every Alveoli is surrounded by capillaries- rich supply of gasses to be diffused
.1 cell thick
What is the definition of hart rate
The number of times the hart beats per minute
What is the pathway of deoxygenated blood?
1.Vena Cava
2.Right Atrium
3.Through a valve
4.Right ventricle
5.Through a valve
6.Pulmonary artery
7.Lungs
What is the pathway of oxygenated blood?
.Lungs
.Pulmonary vein
.Left Atrium
.Through a valve
.Left Ventricle
.Aorta
What is the name of the muscle divides the left and right side of the hart?
Septum
What is the name for contraction of the hart?
Systol
What is relaxation of the hart?
Diastole
Where do the Arteries carry the blood?
Away from the hart
What type of blood do Arteries carry?
Oxygenated
What are some characteristics of Arteries?
.Can stretch and flex
.Thick outer wall
.Thick muscle layer
.Narrow lumen
Do arteries have high or low pressure?
High
Where do veins carry blood?
Towards the hart
What type of blood do veins carry?
De-oxygenated
What do veins have to prevent back flow?
Valves
What are some characteristics of veins?
.not elastic
.thin outer wall
.large/wide luman
What do capillaries do?
Link Arteries and veins
How much blood can travel through a capillaries?
1 cell at a time
What are some characteristics of capillaries?
.small luman
.very thin walls to allow for rapid diffusion
What is vasoconstriction?
Closing of the lumen restricting blood flow
What is vasodilation?
Opening of the luman allowing for increased blood flow.
What is cardiac output?
The volume of blood ejected from the hart in one minute
Where does the blood flow get directed during exercise?
Working muscles
