Nervous system

Multiple Choice

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

• 1 and 5

• 2

• 3

• 6

Multiple Choice

As the neuron fires, there's a reversal in _____ as the axon undergoes ________.

• direction, depolarization

• charge, depolarization

• direction, repolarization

• charge, repolarization

Multiple Choice

Which of the following uses ACTIVE transport?

• sodium-potassium pump

• sodium channel

• potassium channel

• diffusion

Multiple Choice

What division of the nervous system is responsible for sensory input?

• Afferent

• Somatic

• Efferent

• Autonomic

​Practice- Check for understanding

Multiple Choice

Identify structure 4 in the diagram.

• synaptic cleft

• sarcolemma

• vesicle

• Ca²⁺ ion

Multiple Choice

What is the name of the component that houses the neurotransmitters?

• Synaptic cleft

• Acetylcholine

• Receptors

• Synaptic vesicles

Multiple Choice

The gap between the nerve cell and sarcolemma is the ____ ___.

• Synaptic cleft

• Neurotransmitter

• Motor unit

• Neuromuscular junction

Multiple Choice

Neurotransmitters are released from the

• Dendrites

• Post-synaptic neuron

• Presynaptic neuron

• Schwann Cells

Multiple Choice

Excess neurotransmitters in the synapse that goes back into the presynaptic neuron.

• Resting potential
• Reuptake
• Retroactivity
• Repolarization

Multiple Choice

W

• Axon Terminal Button
• Neurotransmitters
• Dendrite
• Synapse

Multiple Choice

What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?

• Neurotransmitters
• Synapse
• Threshold
• Impulse

Draw

Label the layers of the brain

1) Scalp

2) Periosteum

3) Dura mater

4) Arachnoid

5) Bone

6) Pia mater

Multiple Choice

The grooves (the lower part) on the surface of your brain are called:

• Sulcus (sulci - plural)

• Gyrus (gyri - plural)

• Brain valleys

Multiple Choice

tracts of myelinated fibers in the CNS

• white matter

• gray matter

• motor neurons

• axon

Multiple Choice

tracts of unmyelinated fibers in the CNS

• gray matter

• white matter

• schwann cells

• axon

Draw

label the parts of the brain.

1) Parietal Lobe

2) Occipital Lobe

3) Frontal Lobe

4) Temporal Lobe

5) Brain Stem

6) Cerebellum

Multiple Choice

motor transmitters that carry impulses from the CNS to the muscles and glands

• efferent nerves

• afferent nerves

• motor neurons

• white matter

Multiple Choice

sensory transmitters that send impulses from receptors in the skin, muscles, and joints in the CNS

• Afferent nerves

• efferent nerves

• microglia

• motor neurons