Cardivascular System Flashcards
Cont
Narrow diameter
Highly permeable capillaries
Deoxygenated blood returns
Goes to right side
Cs
Circulation of oxygenated blood
Blood from lungs is returned to left side
Pulmonary veins is pumped out through the aorta
Blood vessels known as arteries
Blood
Plasma
Red blood cells
White blood cells and platets
Plasma
Protein rich Ionic composition Major ions Plasma k ions Excitable tissues K ions conc gradient across the cell membrane Protein syntheses in liver
Transport
Blood bound
Plasma proteins
Steroid hormones
Transport bound to ferritin
Blood clotting
Significant blood lose If damaged Blood clot plug danaged vessels exposures of proteins Plasma contains platlets Clotting cascade is a filament pus protein Cross linked Fibrin mesh work traps platelets Minimising blood lose
Oncotic pressure
Albumin
Neg charge
25mm
Pressure reduced in liver failure as plasma drops
Red blood cells
Produced in bone marrow Control of hormone Erythropoietin Produced in protein Shaped in bio concave disc
RBc
Produced in protein Flexible Pass through small capillaries No nucleus Cytoplasm packed with harmologlobin
Rbc
Transports oxygen Harmologlobin is protein 4 subunits Core harm ring Binding oxygen Interaction
Rbc
O2 is bound to 1 unit
Partial pressure of oxygen again
Saturation
Platelets
Small subcellular fragments
Import in blood clots
The heart
4 chamfered pump Blood flow systemic 2 ventricles And 2 atria In 2 phases Right atrium receive blood Separated by valve
Heart
Ventricle relax Ventricle is lower than atrium Passive flow of blood from ventricle Weak contraction of atrial wall Ventcle complete it contracts and blood is pushed out
Heart
Pulmonary trunk to pulmonary arteries into lungs
Blood pressure goes up
I tricuspid stops back flow
Venous blood return from lungs
