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Cardiac Cell

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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  1. Cardiac Cell By Sandra Cordova Period 4

  2. Pictures 1. cardiac muscle cell 2. nuclei 3. intercalated disks

  3. Structure • The cell is Y shaped • Arrangement of actin and myosin is similar to the skeletal striated muscle

  4. Structure • 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

  5. Functions • 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

  6. 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 Functions

  7. Osmosis • 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

  8. Diffusion • 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

  9. 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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