Section D - 12.13, 18, 23, 24 Flashcards
MAP =
MAP = CP x TPR
Flow formula
F = deltaP/R –> deltaP = F x R
What constitutes the arterial baroreceptors
the two carotid sinuses and the aortic arch baroreceptor
the primary integrating center for the baroreceptor reflexes is a diffuse network of highly interconnected neurons called the ___ ___ ___, located in the ___ ___
medullary cardiovasular center, medulla oblongata
CO during exercise (range)
5L/min - 35L/min
factors promoting venous return duringexercise
increased activity of the skeletal muscle pump, increased depth and frequency of inspiration (respiratory pump), sympathetically mediated increase in venous tone, greater ease of blood flow from arteries to veins through the dilated skeletal muscle arterioles
What happens after reaching VO2 max
work can be increased only briefly by anaerobic metabolism in the exercising muscles
Stroke volume levels off at _% of VO2max
75%
stoppage of bleeding is called ___
hemostasis
platelets adhere to collagen via an intermediary called ___ ___ ___, a plasma protein secreted by endothelial cells and platelets
von Willebrand factor
a blood clot consists mainly of a protein polymer called ___
fibrin
what happens when injury to a vessel starts a cascade of chemical reactions
an inactive plasma protein is activated to a proteolytic enzyme, which catalyzes the generation of the next enzyme in the sequence
the plasma protein ___ is converted to the enzyme ___, which then catalyzes a reaction in which several polypeptides are split from molecules of the large rod shaped plasma protein ___. the ___ remnants bind to each other to form ___
prothrombin, thrombin, fibrinogen, fibrin
chemical linking is catalyzed by an enzyme known as ___ ___, which is formed from plasma protein ___ ___ in a reaction also catalyzed by thrombin
factor XIIIa, XIII
thrombin catalyzes the formation of loose ___ but also the activation of ___ ___ which stabilizes the ___ network
fibrin, factor XIII, fibrin
