shellfish
extensor
ear muscle
The heart is made up of 3 layers of cardiac muscle (different to voluntary and smooth muscle). Epicardium, myocardium and endocardium.
The heart itself is a muscle, however the heart all is made up of different muscles. The muscle knows as the MYOCARDIUM makes up the largest portion of the Heart Wall. The myocardium is made up of the cardiac muscle tissue, which is responsible for the pumping action.
Cardiac muscle
It's made out smooth muscle, of the multiunit variety, like the iris.
muscle
Cardiac muscle fibers.
The "heart", which is made up entirely of cardiac muscle.
Muscle is an organ! An organ is made up of a group of tissue and muscle is made up of a group of tissue! So muscle is an organ sure! Just me!
Cardiac muscle
skeletal muscle