Questions and CORRECT Answers
VEIN : DIRECTION OF BLOOD FLOW - CORRECT ANSWER - Back to the heart
VEIN : OXYGEN CONCENTRATION - CORRECT ANSWER - Carry deoxygenated
blood (except pulmonary veins). Dark non pulsatile blood.
VEIN : PRESSURE - CORRECT ANSWER - Low. Flow rates relatively slow compared
to arterial flow.
VEIN : ANATOMY - CORRECT ANSWER - Thin outer walls, elastic and muscle layers.
10% of vessel diameter. Collapsible and easily distended.
VEIN : LOCATION - CORRECT ANSWER - Located closer to the skin and can be both
superficial and deep.
VEIN : VALVES - CORRECT ANSWER - Contains valves to prevent the back flow of
blood.
VEIN : SYSTEMIC CIRCULATION - CORRECT ANSWER - Transports deoxygenated
blood from the tissues to the right side of the heart.
VEIN : PULMONARY CIRCULATION - CORRECT ANSWER - Pulmonary veins
transport oxygenated blood to the left side of the heart.
VEIN : TUNICA ADVENTITA - CORRECT ANSWER - Outermost layer. Made of
connective tissue as a supportive layer.
, VEIN : TUNICA MEDIA - CORRECT ANSWER - Middle layer. Composed of smooth
muscle and elastic tissues. Contains nerve fibers for vasoconstriction and vasodilation.
*Temperature, mechanical, or chemical irritation may produce spasms*
VEIN : TUNICA INTIMA - CORRECT ANSWER - The innermost layer is composed of
single layer, smooth, flat endothelial cells which line the blood vessels, veins, arteries, heart
valves, and capillaries.
*Damage to this layer exposes the underlying collagen layer, initiating platelet activation to
create a plug. This process activates the clotting cascade to deposit fibrin in the platelet plug.
*Thrombus formation or larger deeper veins can lead to venous thrombosis.*
VEIN : VALVES - CORRECT ANSWER - Found in larger veins of the extremities and is
composed of endothelial leaflets.
Valves Function by keeping blood flowing toward the heart occurring at points of branching and
often causing a notable bulging of veins.
VEINS : METACARPAL - CORRECT ANSWER - Anatomic route:
Along the distal portion of the fingers
Clinical considerations:
Fingers may require splinting or immobilization. Increased risk of infiltration.
*DO NOT USE*
VEINS : DIGITAL - CORRECT ANSWER - Anatomic route:
Dorsum of the hand. Formed by the union of the digital veins between the knuckle.