Cardiac Muscle Cells

Learn all about cardiac muscle cells!

Main Function

The function of cardiac muscle cells is to make up cardiac muscles and allow for the contraction of the atria and ventricle of the heart, which allows it to beat.
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Cardiac Muscle Cells in Contraction

Contraction is the main purpose of these cells and this is a great example of it.

The Three Most Common Organelles in Cardiac Muscle Cells

Myofibrils- These surround the mitochondria and the glycogen. These organelles are so important because they take the energy produced by other organelles and use it to drive the contractions that allow blood to be pumped.

Mitochondria are numerous and very large and are packed between the myofibrils. Mitochondria are very important because in order for the heart to pump it needs a lot of energy. This energy is produced from ATP which is made in the mitochondria.

Glycogen- These are also surrounded by the myofibrils and their purpose is to store the energy. This is essential so that when energy is needed it is taken directly from the glycogen.

Connection- As you can see these 3 organelles create a chain of events. The mitochondria creates the energy(ATP), the glycogen stores the energy, and the myofibrils use the energy to make the contractions happen.

Cardiac Muscle Cells, Cardiac Muscle Tissue, Cardiac Muscles

Cardiac Muscle Tissue- Is made up of many cardiac muscle cells and is highly specialized to pump blood throughout the body.

Cardiac Muscles- Cardiac muscle is made up of a lot of cardiac muscle tissue. They are found in and and around the heart. These muscles are some of the most highly specialized due to the fact that they have to be constantly working for a persons whole life time. some of these muscles don't even need messages from the brain to do their function they just automatically do it.

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