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nervous system quiz
system quiz for science
| Question | Answer |
|---|---|
| the nervous system is composed of two main branches: ____________ and ____________ nervous system | central; peripheral |
| The central nervous system is the control center of the body. It includes the ___________ and ____________ _________. | brain; spinal cord |
| The peripheral nervous system consists of a network of ___________ that branch out from the central nervous system and _________ it to the rest of the body. | nerves; connect |
| The peripheral nervous system is involved in both _________ and _______ actions. | involuntary; voluntary |
| A cell of the nervous system is called a _________ | neuron |
| what carry messages from the SENSE organs to the brain and spinal cord (CNS)? | sensory neuron |
| what carry messages from CNS to muscles and glands? | motor neurons |
| what is located in CNS, connect sensory and motor neurons? | interneuron neurons |
| Most of the neurons that are part of the somatic nervous system are under your conscious _________ | control |
| Autonomic nerves do not need your conscious control. The autonomic nervous system controls body functions that you don’t think about, such as ___________ and _______ _______ | digestion; heart rate |
| a nerve is a __________ of axons bundled together with blood vessels and connective tissue. | collection |
| Most nerves have axons of both _______ neurons and _____ neurons. | sensory; motor |
| For a nerve impulse to be carried along at a synapse, it must _________ the gap between the axon and the next structure. | cross |
| The axon tips release chemicals called __________________ that carry the impulse across the gap. | neurotransmitters |
| what is the largest part of the brain, controls muscles, thinking, learning, memory, and senses? | cerebrum |
| what coordinates muscle movement and balance? | cerebellum |
| what is the top of brainstem, controls automatic things like breathing, heart beat, and involuntary muscles (digestion)? | medulla |
| ___________ receive information | dendrites |
| ___________ send messages | axons |
| axon tip and dendrite do not.......... | touch |
| __________ is the space between the axon tip and the dendrite | synapse |
| what is the the pathway of an impulse (message) called? | the reflex arc |
| chemical digestion __________ down food into ________________. | breaks; nutrients |
| mechanical digestion takes place when you _________ your food into ___________ pieces. | chew; small |
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