Intro to Vascular: Lecture 8 Flashcards
What are the 7 functions of the Vasular system?
- Delivery of oxygen
- Removal of oxygen
- Nutrient delivery
- Removal of waste
- Distribution of hormones
- Transport of immune cells
- Temperature control
What is the MAIN function of the vascular system?
Delivery of oxygen
What is the cell called when we can not remove the carbon dioxide?
acidosis, which means it impairs cell function
What is the percentage of blood that goes to the skeletal muscles at rest?
15%
In the vascular system do all tissues receive equal blood volumes?
no!
What is the percentage of blood that goes to the digestive system at rest?
21%
What is the percentage of blood that goes to the Kidneys at rest?
20%
What are the 2 components of the vascular network?
- Pulmonary
- involves heart and lungs - Systemic
- involves heart and tissue
What does macro circulation do?
takes blood to or from organs
What does micro-circulation do?
distributes blood within each organ
What are examples of microcirculation?
- systemic capillaries
- venules
- arterioles
What are examples of macrocirculation?
- aorta
- systemic veins
- pulmonary artery
- pulmonary veins
What forms the inner layers of ALL blood vessels?
Endothelial cell
Arterioles have the same components to make up their composition are arteries except for what?
elastic fibres
What are the 2 components that makeup capillaries?
- Endothelial cells
- Basement membrane
Why are capillaries so thin?
to allow for quick gas exchange, nutrients and fluid
What are veins made up of?
- Venous valves
- Endothelial cells
- Basement membrane
- Smooth muscle, elastic fibres
- Connective tissue, mostly collagen fibres
What are arteries made up of?
- Endothelial cells
- Basement membrane
- Elastic fibres
- Smooth muscle
- Elastic fibres
- Connective tissue, mostly collagen fibres
True or False
Veins have lower pressures than arteries?
True
Flow can be replaced with what in vascular research?
Q
What is the equation for Cardiac output pressure?
mean arterial pressure / total peripheral resistance
Right arterial pressure generally always equals what?
0
What determines blood flow?
delta pressure (P1-P2)
True or False
The highest pressure is the systolic pressure and the lowest pressure is the diastolic pressure
True
Why can the pressure in the heart go to 0 but the pressure in the larger arteries only go to approx 80?
- because the arteries will always have blood in it flowing
Where is the largest pressure drop?
at the arterioles
True or False
There are continuous pressure gradients between the arteries and the veins
true
