FROM EXCITATION TO CONTRACTION. NEUROMUSCULAR JUNCTION.

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Presentation transcript:

FROM EXCITATION TO CONTRACTION

NEUROMUSCULAR JUNCTION

RESTING MEMBRANE POTENTIAL

Depolarization - Hyperpolarization

ACTION POTENTIAL : PHASES

ACTION POTENTIAL: Ion Current

ROLE OF Na + and K + IN AP

TYPE OF ION CHANNELS

FROM EXCITATION TO CONTRACTION

FIBER to MYOFIBRIL to SARCOMERE

AP DOWN T-TUBULES

T-TUBULE NETWORK

THE SARCOMERE

SARCOMERE

CONTROL AND CONTRACTILE PROTEIN

CONTRACTION INVOLVES ACTIN & MYOSIN

SLIDING FILAMENT THEORY

CONTRACTILE ACTIVATION BY Ca 2+ INVOLVES TROPONIN & TROPOMYOSIN

TWITCH CONTRACTION

TWITCH to TETANUS

FROM EXCITATION TO CONTRACTION

CARDIAC MUSCLE

CARDIAC ACTION POTENTIAL

SA NODE – ION CURRENT OF AP

VENTRICLES – ION CURRENT OF AP

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