nervous 101 kayla king lauren mills. importance sends messages throughout the body. –5 senses
TRANSCRIPT
NERVOUS 101
Kayla King
Lauren Mills
Importance
• Sends messages throughout the body.– 5 senses
Components
• Central – Brain– Spinal cord
• Peripheral– Somatic– Autonomic
• Parasympathetic• Sympathetic
Anatomyphysiology
• Brain is divided into diff. Sections– cerebral hemispheres
• Frontal
• Temporal
• Parietal
• occipital
– Diencephalon
– Midbrain
– Pons
– Medulla Oblongata
– Cerebellum
fr
CENTRAL• Consist
– Spinal cord– Brain– White matter
• axons
– Grey matter• cell bodies• Branched dendrites
Central nervous system
Peripheral NS
• Consists– Sensory nerves
• Sends info to spinal cord and brain
– Motor nerves• Carries messages from sc and b to other body parts
• Subdivided– Sensory-somatic NS– Autonomic NS
Peripheral
Sensory-Somatic NS
• Consists of– Sensory division (afferent division)
• Receives signals from nerves and tissues• Sends to cranial and spinal nerves
– Motor division (efferent div.)• Contains pathways from spinal cord and brain stem to
lower neurons in spinal and cranial nerves
Sensory-Somatic Nerves
• 12 pairs of cranial nerves• 31 pairs of spinal nerves
SOMATIC
Ans
• Consists of – sensory neurons and motor
neurons that are in the CNS and organs
– Two subdivisions• sympathetic nervous system • parasympathetic nervous
system
• Involuntary actions• Uses two groups of motor
neurons– preganglionic neurons– postganglionic neurons
AUTONOMIC
Sympathetic
• Involuntary• For Stress• http://www.bbc.co.uk/
science/humanbody/body/index_interactivebody.shtml
Parasympathetic
• Involuntary• For Rest• http://www.bbc.co.uk/science/
humanbody/body/index_interactivebody.shtml
Diseases/disorders
• Alzheimer disease
• Huntington disease
• Multiple sclerosis
• Parkinson disease
• Wallenberg syndrome
• Wilson disease
Effects of drugs/alcohol
Alcohol
Caffeine
Works cited
• http://www.uclan.ac.uk/ldu/resources/multimedia/visualization/visualization-animations.htm
• http://science.nhmccd.edu/BioL/ap1int.htm#brain
http://casweb.cas.ou.edu/pbell/Histology/Outline/nerve.html