Peripheral Vascular System Flashcards
veins keep blood moving by
contracting skeletal muscles; pressure gradient caused by breathing (thoracic pressure decreases, abdominal pressure increases); intraluminal valves create one-way flow.
capacitance vessels
veins, named this because of their ability to stretch
deep veins
femoral, popliteal
superficial veins
great and small saphenous
peripheral artery disease
usually caused by atheroschlerosis
lymphatic system
retrieves excess fluid and plasma proteins from interstitial space—returns it to the circulation. Conserves fluid and plasma protein, forms major part of the immune system, absorbs lipids from the small intestine
Lymph vessels drain into the venous system at the
subclavian veins. Right lymphatic duct- into right subclavian vein. Thoracic duct- drains most of the body into left subclavian vein
nodes accessible to palpation
cervical, axillary, epitrochlear, inguinal
organs involved in lymph system
spleen, tonsils, thymus gland
dependent rubor
deep blue red color, occurs with severe arterial insufficiency. Chronic hypoxia produces loss of vasomotor tone and pooling of blood in the veins
trophic skin changes associated with arterial insufficiency
thin, shiny skin
thick ridged nails
loss of hair on lower legs
increased risk for PAD
smoking, hyperlipidemia, DM, HTN
aging adult
peripheral blood vessels become rigid
arterioschlerosis=increased BP
enlargement of intramuscular calf veins
29% over 70 have PAD
venous stasis
is due to problems with contraction of skeletal muscles, and/or competent valves in the veins, and/or a patent lumen.
arterioschlerosis is caused by
loss of elasticity of the walls of blood vessels
