the nervous system
- Created by: imyimss
- Created on: 02-10-18 12:05
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- THE NERVOUS SYSTEM
- the nervous system is divided into the:
- PERIPHERAL NERVOUS SYSTEM
- SOMATIC NERVOUS SYSTEM
- AUTONOMIC NERVOUS SYSTEM
- SYMPATHETIC NERVOUS SYSTEM
- PARASYMPATHETIC NERVOUS SYSTEM
- PERIPHERAL NERVOUS SYSTEM
- CNS
- SPINAL CORD
- relay info from brain to the rest of the body
- circuit of nerves for reflexes so doesn't have to involve brain - quick response
- monitor and regulate bodily processes
- connected to different parts of the body by pairs of spinal nerves which connect to specific muscles and glands
- bundle of nerve fibres enclosed within spinal column and which connect nearly all parts of body to brain
- relay info from brain to the rest of the body
- SPINAL CORD
- human nervous system in complex network of nerve cells that carry messages to and from the brain and spinal cord to different parts of the body / help communication
- PERIPHERAL NERVOUS SYSTEM
- AUTONOMIC NERVOUS SYSTEM (ANS)
- governs brains involuntary activities and is self-regulating
- divided into sympathetic and parasympathetic
- SYMPATHETIC NERVOUS SYSTEM (SNS)
- fight or flight response
- increased heart rate allows for greater blood flow to skeletal muscles
- pupils dilate - let in more light for better vision
- bronchial tubes in lungs dilate for greater oxygen intake
- adrenal medulla stimulated to release adrenaline
- glycogen in liver is converted to glucose for energy
- digestive system and saliva production is stopped
- sweat glands stimulate to produce more sweat
- digestive system and saliva production is stopped
- glycogen in liver is converted to glucose for energy
- adrenal medulla stimulated to release adrenaline
- bronchial tubes in lungs dilate for greater oxygen intake
- pupils dilate - let in more light for better vision
- increased heart rate allows for greater blood flow to skeletal muscles
- neurons travel from SNS to virtually every organ / gland to prepare for rapid action
- fight or flight response
- PARASYMPATHETIC NERVOUS SYSTEM (PNS)
- relaxes the body once the emergency has passed
- slows the heart rate back to normal
- involved in energy conservation and digestion
- slows the heart rate back to normal
- relaxes the body once the emergency has passed
- governs brains involuntary activities and is self-regulating
- AUTONOMIC NERVOUS SYSTEM (ANS)
- the nervous system is divided into the:
- CENTRAL NERVOUS SYSTEM (CNS)
- the nervous system is divided into the:
- PERIPHERAL NERVOUS SYSTEM
- SOMATIC NERVOUS SYSTEM
- AUTONOMIC NERVOUS SYSTEM
- SYMPATHETIC NERVOUS SYSTEM
- PARASYMPATHETIC NERVOUS SYSTEM
- PERIPHERAL NERVOUS SYSTEM
- SPINAL CORD
- BRAIN
- the nervous system is divided into the:
- BRAIN
- CNS
- SPINAL CORD
- relay info from brain to the rest of the body
- circuit of nerves for reflexes so doesn't have to involve brain - quick response
- monitor and regulate bodily processes
- connected to different parts of the body by pairs of spinal nerves which connect to specific muscles and glands
- bundle of nerve fibres enclosed within spinal column and which connect nearly all parts of body to brain
- relay info from brain to the rest of the body
- SPINAL CORD
- CEREBRUM
- CEREBELLUM
- DIENCEPHALON
- BRAIN STEM
- regulating automatic functions essential for life
- breathing, heartbeat, swallowing
- regulating automatic functions essential for life
- thalamus - relay station for nerve impulses
- hypothlamus - regulating internal conditions (body temp.)
- BRAIN STEM
- controlling motor skills and balance
- coordinating muscles
- DIENCEPHALON
- divided into 4 lobes with different functions
- two halves - celebral hemispheres
- two halves communicate through corpus callosum
- two halves - celebral hemispheres
- CEREBELLUM
- responsible for coordinating sensations, intellectual and nervous activity
- CNS
- two halves - celebral hemispheres
- two halves communicate through corpus callosum
- thalamus - relay station for nerve impulses
- hypothlamus - regulating internal conditions (body temp.)
- part of peripheral nervous system responsible for carrying sensory and motor info to and from CNS
- SOMATIC NERVOUS SYSTEM
- reflex actions without involvement of CNS - quick reflex
- motor neurones - info form CNS to other areas of body
- sensory neurones - messages to the CNS
- PERIPHERAL NERVOUS SYSTEM
- AUTONOMIC NERVOUS SYSTEM (ANS)
- governs brains involuntary activities and is self-regulating
- divided into sympathetic and parasympathetic
- SYMPATHETIC NERVOUS SYSTEM (SNS)
- fight or flight response
- increased heart rate allows for greater blood flow to skeletal muscles
- pupils dilate - let in more light for better vision
- bronchial tubes in lungs dilate for greater oxygen intake
- adrenal medulla stimulated to release adrenaline
- glycogen in liver is converted to glucose for energy
- digestive system and saliva production is stopped
- sweat glands stimulate to produce more sweat
- digestive system and saliva production is stopped
- glycogen in liver is converted to glucose for energy
- adrenal medulla stimulated to release adrenaline
- bronchial tubes in lungs dilate for greater oxygen intake
- pupils dilate - let in more light for better vision
- increased heart rate allows for greater blood flow to skeletal muscles
- neurons travel from SNS to virtually every organ / gland to prepare for rapid action
- fight or flight response
- PARASYMPATHETIC NERVOUS SYSTEM (PNS)
- relaxes the body once the emergency has passed
- slows the heart rate back to normal
- involved in energy conservation and digestion
- slows the heart rate back to normal
- relaxes the body once the emergency has passed
- governs brains involuntary activities and is self-regulating
- AUTONOMIC NERVOUS SYSTEM (ANS)
- SOMATIC NERVOUS SYSTEM
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