BIOL 2301 Brazosport College -A & P II Lab 4 - Blood
Vessels, Blood Flow, and Blood Pressure Questions With
Complete Solutions
precapillary sphincters
- circular rings of muscle that "shut down" or "open up"
capillary beds as necessary to control distribution of blood
- blood can be shunted away from tissues where demand for
blood is low to tissues where demand is higher
venules
- the smallest veins collecting blood from the capillary beds
they merge together to form increasingly larger and larger veins
veins
- are large pipelines transporting blood back to the heart
- many are superficial and visible just under the skin
- pressures are typically 20 - 1 mmHg
- to compensate for low pressures, they contain venous valves
and larger diameter lumens to facilitate the upward movement of
blood to the heart
aortic arch
, brachiocephalic artery
Left common carotid artery
left subclavian artery
descending aorta
thoracic aorta
Vessels, Blood Flow, and Blood Pressure Questions With
Complete Solutions
precapillary sphincters
- circular rings of muscle that "shut down" or "open up"
capillary beds as necessary to control distribution of blood
- blood can be shunted away from tissues where demand for
blood is low to tissues where demand is higher
venules
- the smallest veins collecting blood from the capillary beds
they merge together to form increasingly larger and larger veins
veins
- are large pipelines transporting blood back to the heart
- many are superficial and visible just under the skin
- pressures are typically 20 - 1 mmHg
- to compensate for low pressures, they contain venous valves
and larger diameter lumens to facilitate the upward movement of
blood to the heart
aortic arch
, brachiocephalic artery
Left common carotid artery
left subclavian artery
descending aorta
thoracic aorta
