Ch. 20 peripheral vascular system Flashcards
arteries
- temporal
- carotid
arteries in the arm
- brachial
- ulnar
- radial
arteries in the leg
- femoral:ingual area
- popliteal: behind the knee
- dorsalis pedis: back of foot
- posterioir tibial: back of calve
veins
-Jugular veins
veins in the arm
- superficial
- deep
veins in the leg
-deep veins
+femoral and popliteal
-superficial veins
+great and small saphenous
-Perforators (connecting veins)
venous system
low blood flow
mechanisms of venous flow
- contracting skeletal muscles that milk blood proximally
- pressure gradient caused by breathing
- intraluminal valves which are unidirectional, opens toward the heart
Structures of lymphatics
-right lymphatic duct
-thoracic duct
-lymph nodes
-related organs to lymphatic system
+spleen, tonsils
Functions
Lymph nodes
+filter fluid before it is returned to the bloodstream
+local inflammation
+accessible to examiner
-Cervical nodes, axilla, ingunal nodes, groin, arms
- Spleen- destroys old RBC and stores
- Tonsils= Thymus gland (only in childhood)
Dev. care
-infants/children= lymph nodes: adult size by age 6
- pregnancy=
+dependent edema & varicose veins
-older adult=
+blood vessels grow more rigid, arterioscolerosis
+increases in size and numbers
+increase in TBT and pulmonary myosis
variations in arterial pulse
- weak “thready” pulse= +1
- full, bounding pulse- 3+
- water- hammer (corrigan’s) pulse- 3+ (collapses suddenly)
- pulses bigenminus
- pulses alternans
- pulses paradoxus
- pulses bisferiens
raynauds syndrome
abrupt, progressive tricolor change of the fingers in response to cold, vibrations, or stress
Deep vein thrombosis
- inflammation, blocked venous return, cyanosis, edema
- prolonged bedrest
