Nervous System GF

Question 1

Messages are sent throughout the body using neurons, like the image below shows. The message is ___ as it travels down a neuron’s axon, then ___ as it passes from one neuron to the next within the synapse.

Answer 1

electrical, chemical

Question 2

True or false: Neurons have a nucleus and organelles.

Answer 2

True

Question 3

What does the nervous system control?

Answer 3

1. your thoughts
2. your emotions
3. the movement of your muscles

Question 4

Tell me the description to this correct type of neuron.

interneurons

Answer 4

a neuron found in the spinal cord.

Question 5

Tell me the description to this correct type of neuron.

sensory neurons

Answer 5

a neuron that can detect an external stimulus.

Question 6

Tell me the description to this correct type of neuron.

motor neurons.

Answer 6

a neuron that can cause a muscle to move.

Question 7

What structures are found in the nervous system?

Answer 7

1. brain
2. nerves
3. spinal cord

Question 8

At a synapse, neurotransmitters are released from a neuron’s ___ and taken up by the next neuron’s ___

Answer 8

axon terminal, dendrites

Question 9

Your ___ controls reflexes without your conscious thought

Answer 9

spinal cord

Question 10

You immediately pull your hand away after touching something sharp, you sneeze because of irritants in your nasal passageway, you blink as a bug gets too close to your eye. These are examples of ___.

Answer 10

relexes

Question 11

A reflex only requires a message to pass through ___ synapses to cause a response

Answer 11

2

Question 12

___ are chemicals that are released from one neuron and sent to the next neuron within a synapse.

Answer 12

neurotransmitters

Question 13

The gap between neurons is called a ___.

Answer 13

synapse