AP 1 (9-1)

• Produce skeletal movements
• Maintain posture and body position
• Supports soft tissues
• Gaurds entrances and exits
• Maintain body teamperature
• Provide nutrient reserves

• Fascia
• Aponeuroses
• Epimysium
• Perimysium
• Endomysium

Layers of dense connective tissue that surround and seperate each muscle. These extend beyond the ends of the muscle to form tendons that are fused to the periosteum of bones.

Broad sheets of connective tissue that attaches to bone or to coverings of adjacent muscles.

Layer of connective tissue that closely surrounds a skeletal muscle.

Surrounds individual bundles (fascicles) within each muscle.

Surrounds each muscle cell (fiber)

Cell membrane of the muscle cell

Cytoplasm.

• Mitochondria
• Nuclei
• Myofibrils

Myosin

• Actin
• Troponin
• Tropomyosin

The organization of thick and thin filaments.

Light bands made up of actin filaments are anchored to Z lines.

Dark bands are made up of overlapping thick and thin filaments.

These consists of myosin (thick) filaments located in the center of A bands.

Thick area in the center of the H zone that consists of proteins that hold the thick filaments in place.

Consists of two twisted strands with globular crossbridges projected outward along the strands.

A globular protein with myosin binding sites.

Protiens associated with the surface of the actin filaments.