Cardiac Muscle

modified/specialized myocardial cells

conduct AP at different AP velocities 

examples of modified/specialized myocardial cells

SA Node, AV Node, AV Bundle, Purkinje Fibers

myocardial cells

all other cells that are not specialized

-function is to contract myocardial cells

examples of myocardial cells

all other cells making up walls of atria and ventricles

shape of myocardial cells

branched

how are myocardial cells connected

by gap junctions (intercalated disks) which allow for direct communication between neigboring cells 

what is AP generated by

specialized myocardial cells

where does the Ca+ for AP come from

from SR (intracellular)

where does the SA Node send AP’s too

intimates ap once sends it to myocytes (atrial walls and) & av nodes

what does the SA node consist of 

specialized myocytes capable of generating their own AP