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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

Cardiac Cell

By

Sandra Cordova

Period 4

pictures
Pictures

1. cardiac muscle cell

2. nuclei

3. intercalated disks

structure
Structure
  • The cell is Y shaped
  • Arrangement of actin and myosin is similar to the skeletal striated muscle
structure1
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
functions
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
functions1

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
osmosis
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
diffusion
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
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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