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Myofilaments

Skeletal muscle cross section EM

cross section,

Sarcomeres

Skeletal muscle fiber membranes

Thick filament II

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Structure of Thin Filament

Tropomyosin and Troponin

Nebulin and Titin

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Energy required for contraction comes from three main sources:

myosin
crossbridge

X-bridge: ATP hydrolysis

Sliding filament model of muscle contraction:
actin and myosin filaments slide paste
one another

Filament Overlap Hypothesis

Neuromuscular
Junction

Action Potential

Twitch

Role of Ca++ in contraction

Mechanics of
Muscle Contraction

SPECIALIZED MUSCLE FIBRES

What causes muscle fatigue?

Summation

Tetanus

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Sarcoplasmic Reticulum (SR) / T Tubule System

ECC membranes

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Skeletal vs Cardiac ECC

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Heart Muscle Structure

Ion fluxing membranes in muscle

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vertebrate
skeletal
muscle
contraction

ECC

Voltage-gated ion channels

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RyR

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Smooth muscle contraction

SM-LC phosphorylation

Smooth muscle structure - EM

Smooth muscle

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IP3 pathway

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