AL Muscle and muscle contraction

Identify the type of ion released by the sarcoplasmic reticulum which binds to troponin

• Chloride

• Sodium

• Calcium

• Potassium

Which type of muscle tissue is found in skeletal muscles?

Identify the term for the membrane of a muscle fibre

• Sarcomere

• Sarcolemma

• Sarcoplasm

• Transverse system tubule

Identify the structure in the image

Identify the structures to which actin is anchored in a sarcomere

• Tropomyosin

• A bands

• M lines

• Z lines

What term describes muscle that is stimulated to contract by action potentials?

Identify the fibrous protein that blocks the attachment site on the thin filament preventing the formation of cross bridges

• Troponin

• Actin

• Tropomyosin

• Myosin

State the term for a cylindrical bundle of thick and thin filaments inside a muscle fibre

Identify the feature that distinguishes striated muscle from smooth muscle

• Neurogenic

• Generate force through contraction

• Shape of cells is long

• Cells are multinucleated

Identify the molecule that breaks cross bridges

• Troponin

• ATP

• Tropomyosin

• T-tubules