Nerve

During the transmission of signals across a neuromuscular junction, which of the following happens last?

• Acetylcholine binds to a receptor protein on the motor end plate.

• Sodium and potassium ion gates in the motor end plate open.

• Synaptic vesicles release acetylcholine molecules.

• Synaptic vesicles move toward the axon terminals.

At a neuromuscular junction, what is the function of the motor end plate?

• To release neurotransmitters that travel toward the axon terminal

• To bind neurotransmitters and generate an action potential in the sarcolemma

• To release sodium and potassium that travel toward the axon terminal

• To bind sodium and potassium and generate an action potential in the sarcolemma

What is labeled # 3?

• Motor End Plate

• Calcium Channel

• Synapse

• Neurotransmitter

Most animals have neurohormones such as oxytocin and vasopressin. What is a neurohormone?

• A hormone produced by nerve cells

• A hormone only designed for movement

• A hormone that focuses on movement

• A hormone produced by other hormones

Pertaining to three branches is…

• trigeminal

• dendrites

• triopia

• neuron

A membrane potential becoming less negative is called

• hyperpolarization

• depolarization

• repolarization

• polarization

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What number(s) on the graph represents the THRESHOLD level of stimulus?

• 1 and 5

• 2

• 3

• 6

What is the normal resting potential of a neuron cell membrane?

• +40mV

• -30mV

• +55mV

• -70mV

Which ions are involved in an action potential?

• Na; Cl

• Na; K

• K; Cl

• Na; Ca

The sodium potassium pump restores the resting potential. By which process does this work? 

• Osmosis

• Diffusion

• Facilitated diffusion

• Active transport