Cardiac Muscle Similarities

Comparing the Cardiac muscle and the Skeletal muscle
Differences Similarities
Skeletal muscle is usually linked to bones by structures called tendons. Cardiac muscle is found in the heart. They are both important parts to the body.
Skeletal muscle cells are usually arranged into cylindrical fibres with multiple nuclei and can be directly controlled by voluntary nerve signals from the nervous system. Cardiac muscle cells are normally shorter and are linked via gap junctions which allow compounds to pass directly from one to another. Both Cardiac and Skeletal muscles have t-tubules. These help to conduct electrical action potentials.
The skeletal muscle has more t-tubules than the Cardiac muscle. However, the t-tubules are wider in the Cardiac
The cardiac muscle is an extremely specialised form of muscle tissue that has evolved to pump blood around the body. It is only found in the heart and makes up the bulk of the heart’s mass. It has been evolved to have incredibly high contractile strength and endurance. As the cardiac muscle has it’s own rhythm, it sends out signals so all the cells in the heart can contract together. Cardiac muscle cells are rectangular shaped cells connected by regions called intercalated discs. Intercalated discs contain gap junctions and demosomes. Cardiac muscle cells have one or two nuclei, which are centrally located. The myofibrils separate to pass around the nucleus, leaving a clear area. This clear area is occupied by organelles, especially mitochondria. Skeletal muscles come in all different shapes and sizes. They range from extremely tiny strands such as stapedium muscle which is found in the middle ear to large masses such as muscles of the thigh. Some skeletal muscles are broad in shape and same can be narrow, depends where they are suited. Just about all body movement is caused by skeletal muscle contraction. Skeletal muscle generates heat as a by-product of muscle activity. This heat is vital for maintaining your normal body
However, the exocrine glands do require ducts to gather the secretions and lead out for distribution. Composed predominately of epithelial tissue.
Exocrine glands maintain their contact with the surface by the way of a duct, an epithelial tube that conveys their secretion to the surface. Endocrine glands lose their contact with the surface because they have no ducts. Both glands secrete products in a liquid solution.
Endocrine have a high density of blood capillaries and secrete their products directly into the blood.
Endocrine produce hormones which diffuses directly into the circulatory system. Whereas exocrine produces enzymes which are secretes directly to a specific area.
Exocrine glands are easier to categorize than endocrine glands although they are made up of multiple cells. Exocrine glands may be as small as a single