Blood Vessels

Artery

Carries blood away from the heart under high pressure.

Capillary

The smallest vessel where gas and nutrient exchange occurs.

Vein

Act as blood reservoirs due to their high capacity to stretch.

Venous Valves

Prevent the backflow of blood as it returns to the heart.

Smooth Muscle

Component in arterial walls that helps withstand high pressure.

Systolic

___ pressure is the force during heart contraction

Diastalic

___ pressure occurs when the heart is at rest

Atherosclerosis

The accumulation of fatty plaques that narrows the arterial walls is known as ___

Hepatic portal

Responsible for routing blood from the digestive organs through the liver before it returns to the heart

Calf muscles

Blood returning to the heart from the lower limbs is aided by the contraction of ___

Vasculitis

Inflammation of the blood vessel walls

Heart Rate x Stroke Volume

Cardiac Output (CO) is calculated using which two factors?

Severe blood loss (reducing stroke volume)

Which of the following would decrease cardiac output?

Their walls are composed of a single layer of thin endothelial cells, allowing for rapid diffusion.

 Why are capillaries better suited for "exchange" than arteries?

Arteries always carry oxygenated blood.

False

Veins have a larger lumen (inner space) relative to their wall thickness than arteries.

True

Capillary hydrostatic pressure is what forces fluid out of the vessels into the tissues.

True