NERVOUS 101 Kayla King Lauren Mills. Importance Sends messages throughout the body. –5 senses.

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Presentation 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

Anatomy physiology 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 ence/humanbody/body/in dex_interactivebody.shtm l

Parasympathetic Involuntary For Rest y/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 media/visualization/visualization- animations.htmhttp:// media/visualization/visualization- animations.htm #brainhttp://science.nhmccd.edu/BioL/ap1int.htm #brain ne/nerve.html

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