Sliding Filament

What binds to the Myosin Head to cause it to detach from the Actin?

• ATP

• ADP

• CNS

• ETC

Tags

NGSS.HS-LS1-7

Whats happens to the A band during contraction?

• It grows in size

• It stays the same

• It shrinks in size

Do the lengths of the thick and thin filaments change during contraction?

• Yes

• No

Myosin is the ...

• Thin Filament of a muscle fibre

• Segment of a muscle fibre

• A molecule that changes shape when bound with Calcium Ions

• Thick Filament of a muscle fibre

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-7

The organelle containing actin and myosin identified as #9

• ACh

• Sarcolemma

• Vesicle

• Myofibril

Calcium:

• causes ATP binding to actin

• increases the action potential along the sarcolemma

• binds to proteins on myosin

• triggers the binding of myosin to actin

Which number represents the sarcomere?

• 1

• 2

• 3

• 4

Thick filaments are in a myofibril are

• ATPase

• Sarcoplasmic reticulum

• Actin

• Myosin

___forms a crossbridge with actin.

• actin

• myosin

• calcium

• ATP

What is a crossbridge?

• Where myosin binds to actin

• Where the calcium crosses into the cytoplasm

• Where calcium binds with troponin

• None of the answers are correct.