4.1 Neuromuscular Function

Part of a motor neuron that conducts impulse away from the cell body

• Dendrite

• Mitochondria

• Axon

• Sarcomere

Neurotransmitter that innervates skeletal muscle

• Acetylcholinesterase

• Acetylcholine

• Tropomyosin

• Troponin

The enzyme that breaks down neurotransmitters

• Cholinesterase

• Acetylcholine

• ATP

• Myosin

When the action potential spreads along the muscle cell, calcium is released from its storage place. Where is calcium stored inside the cell?

• Receptors

• Mithocondria

• Nucleus

• Sarcoplasmic reticulum

The specific part of the muscle cell where synapse occurs

• nucleus

• Sarcomere

• Cell body

• Motor end plate

Which is the protein that binds with calcium to expose the binding sites of the actin?

• Tropomyosin

• Myosin

• Troponin

• Acetylcholine

Which is the protein that, at rest, is covering the active sites of the actin?

• Trompomyosin

• Myosin

• Troponin

• Acetylcholine

Which are the proteins involved in muscle contraction?

• Actin

• Myosin

• Calcium

• Troponin

• Tropomyosin

The unit of muscle contraction is

• Sarcomere

• Myofilaments

• Fascia

• Motor end plate

Fast twitch type IIB fibers are

• Green

• White

• Yellow

• Red