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The Nervous System

1) Divisions of the Nervous System

Type the correct answer into each space. Some responses may occur more than once, as noted after each word or phrase.


Here are the options for filling the gaps:

autonomic (x2) • brain (x2) 

central • parasympathethic • peripheral 

somatic • spinal cord • sympathetic



a nervous system: made up of the brain and spinal cord

b : able to initiate simple reflex actions without the brain's initial input

c nervous system: responsible for voluntary movements

d nervous system: responsible for involuntary functions and processes that usually occur without our awareness

e : contains two hemispheres connected by the corpus callosum

f nervous system: controls automatic functions that are essential for survival, such as breathing and blood circulation

g : believed to contain 86 billion neurons

h nervous system: the part of the autonomic nervous system that arouses the body in a crisis and mobilises the body's resources to fight or take flight

i nervous system: allows communication to and from the central nervous system from the body’s organs, glands and muscles 

j nervous system: responsible for calming the body and restoring it to its normal equilibrium after a period of intense stress or a threatening situation has passed


More about the Divisions of the Nervous System


Picture provided via Wikimedia Commons by William Crochot 


Refer to the diagram on the left to answer the questions below. You will need these gap fillers:


central • motor • peripheral

sensory • spinal cord (x2)


a The neurons in the skin allow the brain to receive information about touch, heat and cold and other environmental information.


b In the picture on the left, the blue lines represent the nervous system.


c The yellow parts of the diagram represent the nervous system.


d The long bundle of fibres that can be seen running vertically along the backbone and coloured yellow is the .


e The brain initiates an order that allows you to type the answer to this question. This requires the functioning of a neuron in the peripheral nervous system.


f If you accidentally touch a hot surface, your hand is withdrawn in a reflex reaction initiated without the brain's inital activity. This reflex is controlled by the .

3) Defining the Parts of the Nervous System


You can use these gap fillers:


arousing • calming • central • corpus callosum

fight-or-flight response • muscles

reflex • spinal cord • voluntary


a The central nervous system is made up of the brain and .

b The somatic nervous system is a part of the nervous system and is responsible for muscle movements, that is, movements that we consciously decide to carry out.

c The sympathetic nervous system forms a branch of the nervous system and has the role of the body in times of stress or threat. This is called the response. 

d The two hemispheres of the brain are connected by a band of tissue called the


e The spinal cord can initiate simple protective actions, such as the withdrawal of your hand from a source of heat. This initial withdrawal can occur without the intervention of the brain. It is called the spinal  .

f The parasympathetic nervous system is a part of the nervous system and is reponsible for the body after a period of stress or threat.

g The peripheral nervous system allows communication to and from the nervous system from the body’s organs, glands and .


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