Cardiac cell
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Cardiac Cell. By Sandra Cordova. Period 4. Pictures . 1. cardiac muscle cell 2. nuclei 3. intercalated disks. Structure. The cell is Y shaped Arrangement of actin and myosin is similar to the skeletal striated muscle. Structure.

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Cardiac Cell

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Cardiac cell

Cardiac Cell


Sandra Cordova

Period 4



1. cardiac muscle cell

2. nuclei

3. intercalated disks



  • The cell is Y shaped

  • Arrangement of actin and myosin is similar to the skeletal striated muscle



  • Muscle found only in the walls of the heart

    • Under control of the autonomic nervous system

  • Some cells form heart connective tissue

  • Others cells grow into heart valves



  • Cardiac muscle differs from other two muscles types

  • Contraction can occurs even without an initial nervous input

  • Must contract in rhythmic fashion for the whole life of the organism

  • If adult cells don’t beat in unison the heart arrhythmias can occur

  • Pacemakers may occur in a patients whose heat doesn’t beat in rhythm

  • Gap junctions provide communication channels between cells

    • Responsible for sending blood to the atria and ventricles


  • Intercalated disks are located between cardiac muscles cells.

    • These contain gap junctions which provide communication channels between cells.

  • Depolarization of cardiac muscle cells differs from that of other muscle cells

As long as the beating cells do not touch one another their beats are independent-some are faster, some are slower

Gap junctions ensure that the connected cells work as one




  • Movement of water through a membrane from an area of high concentration to an area of low concentration

  • If the cell is to far from the external environment osmosis will not function quickly enough



  • Oxygen and chemicals diffuse out of the blood cell

  • Waste produces diffuse into the blood cells to be carried away

  • Glucose is the energy of the cell

  • Diffusion is the movement of molecules from a region of a higher concentration to one of a lower concentration

Cellular respiration

Cellular Respiration

  • Cellular Respiration is the process by which living things obtain energy from the bonds of food molecules.

  • Cellular Respiration in cardiac cell breath in oxygen from plants

  • Take in food that has nutrients

  • Then it breaths out carbon dioxide

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