The Nervous system Flashcards
What are the 3 main functions of the nervous system?
Receive, process and coordinate/respond to info
What are the 2 main divisions of the nervous system
central nervous system (CNS) and the peripheral nervous system (PNS)
What is the central nervous system?
carries messages to the PNS
What is the peripheral nervous system?
carries messages to and from the CNS
What are the 2 divisions of the CNS
the brain and the spinal cord
what is the main function of the brain?
responsible for virtually everything we think,feel and do
What is the main function of the spinal cord?
connects brain and the PNS initiates spinal reflexes
What are the divisions on the PNS
Automic nervous system and the somatic nervous system
What are the 4 functions of the nervous system
- Info is received from the external environment by our sensory organs
- info is transported to the brain via nervous system
- Info is then interpreted by the brain and is either stored or the action will take place
4.The action is then transported to the body via the nervous system to muscles/tendons then the action will occur
What are the main functions of the brain?
responsiblefor basically everything we do such as thinking,feeling doing,problem solving,motor skiils. It is the control centre of the body
What is the spinal cord?
Receives sensory info from the body and sends the message to the brain for processing
also receives motor information from the brain and sends it to relevant parts of the body to control muscles etc.
What are the main functions of the PNS
carries information to the CNS from the bodies muscle organs,gland and sensory organs. carries information from the CNS to the bodies muscles and glands
What are the 2 divisions of the PNS?
the somatic nervous system and the autonomic nervous system
What is the main function of the SNS
is a network of nerves that carry a sensory information to the CNS and motor information from the CNS
How does the SNS functions use sensory information?
Sensory information is receives at sensory receptors sites in the body and carry along the sensory neutral pathways by sensory neutrons.
How does the SNS functions use sensory function
The sensory function of the sns is demonstrated when someone touches your hand. The SNS sends the information about touch from the skin to your brain resulting you feeling the same experience.
How does the SNS functions use motor function
the motor function of the sns is demonstrated whenever you voluntarily move a body part. For example when you text,frown,brush your hair, walk up stairs or ride a bike, your somatic nervous system is active
What is the main function of the ANS?
the ANS is a network of nerves that carries messages between the CNS and the heart,lungs, and other internal organs and glands. The ANS regulates or controls the functioning of internal organs automatically without you having to consciously think about it.
What are the 2 sub divisions of the ANS?
sympathetic NS and the parasympathetic NS
What is the Sympathetic nervous system responsible for?
Responsible for increasing the activity of most organs and glands in times of vigorous activity,stress or threat.
What is the parasympathetic NS responsible for?
decreasing the activity of most organs and gland and restoring the body functions to its normal state
