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Cardiac Muscle Cell

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Kaitlin Powers

on 15 August 2013

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Transcript of Cardiac Muscle Cell

Cardiac Muscle Cell
The myocardiocytes and the cardiac pacemaker cells are the two types of cells that make up the heart.
Cardiovascular System
The cardiovascular system works with the hardest-working organ in the body, the heart.

This system is responsible for transporting oxygen, nutrients, hormones, cellular waste, and five liters of blood throughout the body every minute.

The cardiac muscle cells make up the components in order to do all of these things.

Major Functions
Idea 3
Y-Shape of the cell, myocytes that help the heart beat in unison, and intercalated discs that produce the depolarization current from cell to cell.
Cardiac muscle cells are y-shaped cells that are connected by intercalated discs that contain gap junctions which allow direct transmission of the depolarizing current from cell to cell, across the chambers of the heart, so that the cells contract in unison.
The desmosomes hold the cardiac muscle cells together during contraction.
The muscle cells of the heart are self-contracting, autonomically regulated, and must continue to contract in rythmic fashion for the whole life of the organism. This has to be done so that it can continuously pump blood to and from the heart.
Myocardiocytes make up the atria where blood enters and exits the heart.
The pacemaker cells are reponsible for the beating of the heart and carry the impulses to do so. These cells are scattered all throughout the heart.
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