Diversified Health Occupations Chapter 6 Sec 6
Terms
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- nervous system
- is a complex, highly organized system that coordinates all of the activities of the body
- neuron
- nerve cell, it consists of a cell body containing a nucleus
- nerves
- are combination of many nerve fibers located outside the brain and spinal cord.
- central nervous system
- consists of the brain and spinal cord
- peripheral nervous system
- consists of the somatic and autonomic nervous system
- autonomic nervous system
- is and important part of the peripheral nervous system
- brain
- is a mass of nerve tissue well protected by membranes and the cranium
- cerebrum
- the largest and highest section of the brain
- cerebellum
- the section below the back of the cerebrum
- diencephalon
- the section located between the cerebrum and midbrain
- thalamus
- acts as a relay center and directs sensory impulses to the cerebrum
- hypothalamus
- regulates and controls the autotomic nervous system, temp., appetite, water balance, sleep, and blood vessel constriction and dilation.
- Midbrain
- the section located below the cerebrum at the top of the brain stem
- pons
- the section located below the midbrain and in the brain stem
- medulla oblongata
- the lowest part of the brain stem
- spinal cord
- continues down from the nedulla oblogata and ends at the first or second lumbar vertebrae
- meninges
- are three membranes that cover and protect the brain and spinal cord
- ventricles
- hollow spaces the connect with each other and with the space under the arachonoid membrane
- cerebrospinal fluid
- curculates continually between the ventricles and through the subarachnoid space
- sympathetic and parasympathetic
- usually work together to maintain a balanced state in the body and control incoluntary bdy functionsa at the proper rates.
- cerebral palsy
- is the disturbance in voluntary muscle action and is caused by brain damage
- cerbrovascular accident
- also called a stroke occurs when the blood flow to the barin is impaired resulting is a lack oxygen and destruction of the brain tissue
- encephalitis
- is an inflammation of the brain and is caused by a virus
- epilepsy
- seizure is a brain disorder accociated with abnormal electrical impulses in the neruons of the brain
- hydrocephalus
- is an excessive accumilation of cerebrospinal fluid in the ventricles and in some cases the subarachnoid space of the brain
- meningitis
- is an inflammation of the memimges of the brain and or spinal cord and is cause by a virus
- multiple sclerosis
- is a chronic progressive disabling condition resulting from a degeneration of the mylein sheath in the central nervous system
- neuralgia
- is a nerve pain
- paralysis
- usually results from a brain of spinal cord injury that destroys neurons
- parkinson's disease
- is achronic progressive condition involving degereration of the brain cells usually is persons over fifty yrs of age
- shingles
- is an acute inflammation of the nerve cells and is cause by the herpes virus which also causes chickenpox