Answer and Explanation:
Alzheimer's disease (AD) is a neurodegenerative disease probably caused by the accumulation of beta-amyloid peptide in the brain. AD is the leading cause of dementia in the elderly people. Usually presents with gradual symptoms of loss of cognitive functions (memory, orientation, attention and language) caused by the death of neurons.
Similar to AD, we have Lewy body dementia and Parkinson's disease dementia, which may be variations of the same disease. In this disease, synuclein (a protein in the brain that helps nerve cells to communicate) changes shape (remains "badly folded") and slowly accumulates mainly in the brain, but also in the digestive tract and heart. These abnormal synuclein deposits are called Lewy bodies. Misfolded synuclein in Lewy bodies triggers more misfolded synuclein, resulting in the formation of more Lewy bodies. Brain damage results from the accumulation of Lewy bodies. Lewy bodies also is develop in some people with Alzheimer's disease,
<span>A nonspecific (in the way it affects lots of aspects of mind and body) reaction to the demands around us. The higher the demand is perceived by the person the higher the stress.</span>
Generally it can either be ones feelings about oneself or ones past experiences, usually the two link in some way
1. Pass through the cochlea, are transformed into nerve impulses and sent to the brain - sound waves
2. Forms in your outer ear and is meant to protect your ear from dirt and infection – cerumen
3. Receives sounds and sends them through the auditory canal to the eardrum - outer ear
4. A thin membrane that transmits sound waves into the middle ear – eardrum
5. Where the cochlea is - inner ear
6. A snail-shaped organ lined with hair cells. – cochlea
7. Inside, small bones transmit sound waves from the eardrum to the inner ear - middle ear
8. Destroyed by extended exposure to loud noise - hair cells
Explanation:
During hearing, sound waves are received by the outer ear and pass it on to the ear drum through the external auditory canal.
The sound waves upon hitting the eardrum makes it to vibrate and the vibrations are passed on the ossicles of the middle ear. The sound waves are amplified by the ossicles and passes to the inner ear where it reaches the cochlea.
The sensory hair cells in the basilar membranes of the inner ear move the sound wave and also help to create electric signal which is received by the auditory nerves.
These signals are received by the brain where the sound waves are processed.
