NEURON AND REFLEX ARC

Motor neurons carry impulses __________ the brain

• towards

• away from

• within

Which of the following correctly outlines a reflex arc?

• Motor neuron - interneuron - sensory neuron

• Sensory neuron - interneuron - motor neuron

• Sensory neuron - interneuron - brain - motor neuron

The dendrites of a neuron carry a stimulus

• Towards the cell body

• Away from the cell body

• Through the cell body

Neurotransmitters are stored in which structure of the neuron?

• Cell body

• Dendrite

• Axon terminals

Myelin is located on the ____________ and functions to ____________ nerve transmission.

• dendrite - speed up

• dendrite - slow down

• axon - speed up

• axon - slow down

An example of a reflex action includes

• Touching a butterfly

• Brushing your hand against the side of your body

• Touching a hot stove

• Your legs moving as you walk

Tags

NGSS.MS-LS1-8

In a reflex arc, the sensory neuron leads to the ___________ and the motor neuron leads to the __________

• Spinal cord, CNS

• CNS, muscle

• Spinal cord, muscle

• Muscle, CNS

When you suddenly shine a torch in someone's eye, the pupil

• Contracts, then stays that way for the rest of the day because the pupil needs time to readjust

• Stays the same

• Dilates

• Contracts

Tags

NGSS.MS-LS1-8

Reflex actions are important because

• They provide a quick, involuntary response

• They prevent injury

• They are essential to the survival of organisms

• All of the above

Tags

NGSS.MS-LS1-8

What type of neuron is A?

• Sensory

• Inter

• Motor