8 The Nervous System

Which is NOT a function of the nervous system?

• responding to information

• making blood cells

• receiving information on the environment

• maintaining homeostasis

Tags

NGSS.MS-LS1-8

A cell that carries information through the nervous system is called a

• nerve impulse

• nerve

• neuron

• endocrine gland

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-8

A(n) ______ neuron carries nerve impulses from one neuron to another

• inter

• motor

• sensory

• impulse

A ______ neuron picks up stimuli and converts it to a nerve impulse.

• inter

• motor

• sensory

• impulse

A(n) ____ neuron sends impulses to glands and muscles to tell muscles to move

• inter

• motor

• sensory

• impulse

These are chemicals that carry a nerve impulse across the gap at the synapse of a neuron to another neuron

• sodium/calcium

• stimuli

• ions

• neurotransmitters

A ______causes and organism to react. The reaction is called a _______

• stimulus, response

• response, stimulus

• impulse, neuron

• neuron, impulse

Tags

NGSS.MS-LS1-8

What is 1

• axon

• synapse

• dendrite

• cell body

In a resting cell membrane

• there are more potassium ions outside the cell than inside

• there are more sodium ions inside the cell than outside

• the cell membrane is more permeable to sodium ions than potassium ions

• the sodium-potassium exchange pump moves sodium out of the cell

• all of the above

To produce an action potential in a neuron

• depolarization must occur

• the threshold level of membrane potential must be reached

• the cell membrane must become permeable to sodium ions

• all of the above