A&P CHAPTER 19: VASCULAR SYSTEM Flashcards
WHAT IS ANGIOGENESIS
FORMATION OF NEW BLOOD VESSELS
WHAT CAUSES VARICOSE VEINS
VALVES OF VEIN LEAK AND BECOME DIALATED
ARTERY
HIGH PRESSURE BLOOD FROM HEART TO ARTERIOLES
ARTERIOLE
CONTROLS BLOOD FLOW FROM ARTERIES TO CAPILLARIES BY CONSTRICTING OR DILATING
CAPILLARY
MEMBRANE ALLOWING NUTRIENTS, GAS, AND WASTE TO BE EXCHANGED BETWEEN BLOOD AND TISSUE FLUID
VENULE
CONNECTS CAPILLARIES TO VEINGS
VEIN
CARRIES LOW PRESSURE BLOOD TO HEART
PREVENTS BLOOD BACKFLOW
BLOOD RESERVOIRS
WHAT ARE ANASTOMOSES
CONNECTIONS/MERGING OF BLOOD FLOW (VEINS OR ARTERIES) THAT SUPPLY BLOOD TO SAME BODY TISSUES
EX. IF THERE’S A CLOT RO CUT, OTHER CHANNEL CAN KEEP PROVIDING BLOOD TO REGION
BLOOD FLOW
AMOUNT OF BLOOD THAT FLOWS THROUGH CIRCULATION PER MINUTE IN MILLILITERS (SAME AS CARDIAC OUTPUT)
BLOOD PRESSURE
FORCE THAT BLOOD EXERTS AGAINST INNER WALLS OF BLOOD VESSELS
RESISTANCE
FRICTION BETWEEN BLOOD AND BLOOD VESSEL WALLS
VISCOCITY
EASE WITH WHICH FLUID’S MOLECULES FLOW PAST ONE ANOTHER
HOW IS BLOOD PRESSURE CALCULATED
MULTIPLYING CARDIAC OUTPUT BY PERIPHERAL RESISTANCE
SYSTOLIC VS DIASTOLIC PRESSURE
SYSTOLIC: (PERIOD OF CONTRACTION) MAX PRESSURE DURING VENTRICULAR CONTRACTION
DIASTOLIC: (PERIOD OF RELAXATION) LOWEST PRESSURE THAT REMAINS IN ARTERIES BEFORE NEXT VENTRICULAR CONTRACTION
DIFFERENCE BETWEEN SYSTOLIC AND DIASTOLIC PRESSURE IS WHAT
PULSE PRESSURE
ANTIDIURETIC HORMONE
ADH AKA VASOPRESSIN
PRODUCED BY HYPOTHALAMUS RELEASED FROM PITUITARY GLAND
HELPS RESTORE DROPPED BP
ANGIOTENSIN II
PRODUCED BY SPECIALIZED CELLS IN THE KIDNEYS BY EZYME ACTIONS OF RENIN
CAUSES SODIUM RETENTION AND POTASSIUM LOSS BY KIDNEYS
STIMULATES SECRETION OF ADH AND THIRST
