Chap 10 The nervous system: the brain and cranial nerves

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Presentation transcript:

Chap 10 The nervous system: the brain and cranial nerves Memmler’s A&P Chap 10 The nervous system: the brain and cranial nerves

The Brain p217

Protective structures of the brain p212-215 The skull The Meninges 3 layers of connective tissue Dura mater Arachnoid Pia mater Cerebral Spinal Fluid Blood brain barrier Box 10-1 P 217

Cerebrospinal fluid p 215-216 Composition Functions Made in the ventricles of the brain

The Brain p212 Cerebellum Divisions of the brain Cerebrum Diencephalon Brain stem Midbrain Pons Medulla oblongata Cerebellum Corpus callosum

External surface of the brain p217 Cerebrum Frontal lobe Parietal lobe Temporal lobe Occipital lobe

Diencephalon p220 Contains Thalmus Hypothalmus Pituitary gland

The Brain Stem p220 Midbrain Pons Medulla Oblongata

Cerebellum p221 Coordinates voluntary muscles to ensure smooth orderly function Helps maintain balance when standing, walking, sitting Helps maintain muscle tone

Brain studies p221 CT MRI PET EEG

Disorders of the brain: p221 Meningitis Hydrocephalus Cerebral vascular accident Epilepsy Tumors Disorders of the brain: p221

Brain injury p225 Epidural hematoma: bleeding between the dura mater and the skull Subdural hematoma: bleeding in the subdural space

Degenerative diseases p225 Alzheimer’s disease Parkinson’s disease

Cranial nerves p227-228 12 pair of cranial nerves are identified by Roman numerals

Cranial Nerve Disorders p229 Glaucoma: destruction of optic nerve (II) Decreased hearing/deafness: destruction of vestibulochochlear nerve (VIII)

Aging and Nervous system p229 The nervous system decreases in size Speed of processing declines Vascular degeneration Age makes it more difficult to acquire new skills, but practice (repetition) enhances skill learning

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