Chapter 9 Cardio Lecture

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Intercalated Discs

• Connections between cardiac fibers

•Gap Junctions allow ions from one cell to the other

• They signal to contract is transmitted across all cardiac muscle fibers

• FUNCTIONAL SYNCYTIUM

Lots of Mitochondria

• O2=ATP

• (Reliant on Aerobic Energy Production)

No Satellite Cells

Limited Ability to regenerate

Damage can have long-term effects

CARDIAC FIBERS CAN'T REBUILD

Blood Vessels