Compendium 6 - Cardiac Cycle
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15 Terms
Cardiac Output
Heart rate x stroke volume
Sinoatrial Node
Right atrium
Pacemaker - generate action potential
Pathway
SA node - AV node - AV bundles - right/left bundles - Purkinje fibres
Cardiac Conduction System - Features
Internal pacemaker
Autorhythmicity
Nervous System Functions
Maintain blood pressure
Re route blood - vaso (exercise/injury)
Plasma
Water
Proteins
Solutes
Plasma Proteins
Albumin - maintain fluid balance
Globulins - transport
Fibrinogen - clotting
Arteries vs Veins
Buffy Coat
Leukocytes
Platelets
Tunica externa
Loose CT - connect to surrounding
Vasa vasorum
Nerves
Tunica media
Smooth muscle - circular
Change diameter
Tunica interna
Endothelium - simple squamous
Basement membrane
Lamina propria - loose CT
Continuous
No gaps
Less permeable
Muscle/nervous tissue
Fenestrated
Fenestrae - pores
Highly permeable
Villi/glomerulus
Sinusoidal
Less endothelium/basement membrane
Larger diameter
Endocrine glands/liver
