Contractions

point of contact between a motor neuron and a skeletal muscle cell

• I band

• neuromuscular junction

• Sarcoplasmic reticulum

• Epimysium

Which two chemicals allow myosin and actin to interact?

• ATP and Calcium

• Calcium and Sodium

• Sodium and ATP

Which substance binds directly to myosin and allows it to bind to actin?

• Calcium Ions

• Sodium Ions

• ATP

What is our current model of muscle contraction called?

• Fluid Mosaic Model

• Sliding Filament Theory

• Newton's Laws of Motion

• Big Bang Theory

What structure stores and releases calcium ions?

• Myofybril

• Sarcomere

• Sarcoplasmic Reticulum

• ATP

What structure in the muscle disperses the signal out to each muscle fiber?

• Sarcomere

• Myofibril

• T-Tubules

• Sarcoplasmic Reticulum

What substance binds to myosin's "blockers?"

• Calcium Ions

• Sodium Ions

• ATP

Pick the correct spelling

• Contractions

• Controctioms

• Contoractions

• Contractians

produces movement in joints, muscle shortens, causing insertion to move towards origin

• Twitch

• Tetanic

• Isotonic

• Isometric

A quick jerky response

• Twitch

• Tetanic

• Isotonic

• Isometric