VESSEL SELECTION,
CHARACTERISTICS OF VEINS AND
ARTERIES: AVA CERTIFICATION EXAM
Systemic Circulation Characteristics of Veins and Arteries: VEINS - Answer-1. Transports deoxygenated
blood from tissues back to the heart.
2. Thinner walls
3. Collapsible and distendable
4. Located superficial and deep
5. Contains valves to prevent back flow of blood
6. Dark, non-pulsatile blood
7. Flow rates relatively slow compared to
arterial flow.
continued: Systemic Circulation Characteristics of Veins and Arteries: ARTERY - Answer-1. Transports
oxygenated blood rapidly left heart to organs and tissues.
2. Thicker walls, elastic tissue in walls maintains pressure during diastole to
maintain forward movement of blood, no valves, doesn't collapse.
3. Bright red, pulsatile blood flow, rapid flow, compared with venous flow.
, Pulmonary Circulation - Answer-Pulmonary arteries transport unoxygenated blood to pulmonary
capillary bed in lungs for oxygen and carbon dioxide exchange. The pulmonary veins transport
oxygenated blood back to the left side of the heart.
VEIN: Tunica Intima; endothelium - Answer-Innermost layer, smooth, flat endothelial cells lining all
blood vessels, non-thrombogenic.
VEIN: Tunica intima; endothelium - Answer-Damage exposes underlying collagen, initiates activation of
platelets to create a platelet plug activating clotting cascade depositing fibrin in the platelet plug. In
larger deeper veins can lead to venous thrombosis.
VEIN: Tunica media - Answer-1. Middle layer of vein
2. Composed of smooth muscle and elastic
tissue.
3. Contains nerve fibers for vasoconstriction
and vasodilation.
4. Collapsible and distensible.
VEIN: Tunica adventitia - Answer-1. Outermost layer
2. Connective tissue, supportive layer.
ARTERY: Tunica intima; endothelium - Answer-Same characteristics as vein.
Damage to this layer can cause thrombus formation; loosening of a large thrombus
can cause significant embolic events such
as stroke, brain. pulmonary embolus, lung, or
CHARACTERISTICS OF VEINS AND
ARTERIES: AVA CERTIFICATION EXAM
Systemic Circulation Characteristics of Veins and Arteries: VEINS - Answer-1. Transports deoxygenated
blood from tissues back to the heart.
2. Thinner walls
3. Collapsible and distendable
4. Located superficial and deep
5. Contains valves to prevent back flow of blood
6. Dark, non-pulsatile blood
7. Flow rates relatively slow compared to
arterial flow.
continued: Systemic Circulation Characteristics of Veins and Arteries: ARTERY - Answer-1. Transports
oxygenated blood rapidly left heart to organs and tissues.
2. Thicker walls, elastic tissue in walls maintains pressure during diastole to
maintain forward movement of blood, no valves, doesn't collapse.
3. Bright red, pulsatile blood flow, rapid flow, compared with venous flow.
, Pulmonary Circulation - Answer-Pulmonary arteries transport unoxygenated blood to pulmonary
capillary bed in lungs for oxygen and carbon dioxide exchange. The pulmonary veins transport
oxygenated blood back to the left side of the heart.
VEIN: Tunica Intima; endothelium - Answer-Innermost layer, smooth, flat endothelial cells lining all
blood vessels, non-thrombogenic.
VEIN: Tunica intima; endothelium - Answer-Damage exposes underlying collagen, initiates activation of
platelets to create a platelet plug activating clotting cascade depositing fibrin in the platelet plug. In
larger deeper veins can lead to venous thrombosis.
VEIN: Tunica media - Answer-1. Middle layer of vein
2. Composed of smooth muscle and elastic
tissue.
3. Contains nerve fibers for vasoconstriction
and vasodilation.
4. Collapsible and distensible.
VEIN: Tunica adventitia - Answer-1. Outermost layer
2. Connective tissue, supportive layer.
ARTERY: Tunica intima; endothelium - Answer-Same characteristics as vein.
Damage to this layer can cause thrombus formation; loosening of a large thrombus
can cause significant embolic events such
as stroke, brain. pulmonary embolus, lung, or
