Hbs Unit

Motor neurons carry impulses __________ the brain

• towards

• away from

• within

Which of the following describes the function of the Na/K Pumps in the neuron membrane?

• depolarizing the cell by allowing Na into the cell

• repolarizing the cell by allowing K out of the cell

• rearranging Na and K back to return cell to resting state

Tags

NGSS.HS-LS1-3

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

During resting membrane potential, the inside of a neuron has a _______________ charge

• negative

• positive

• neutral

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

Neurotransmitters bind to complementary sites on a cell called

• receptors

• axon terminals

• cell bodies

Reaction time is ___________________ than reflex time.

• faster

• slower

• same

Depolarization occurs when the inside of a cell becomes _________________ due to _________ gates opening.

• positive - potassium

• negative - potassium

• positive - sodium

• positive - sodiium