What factors effect the sense of smell and sense of hearing
Answers
Answer:
aging
Explanation:
when senscent stage keeps moving on Aging changes in the senses. As you age, the way your senses (hearing, vision, taste, smell, touch) give you information about the world changes
Hearing
This sense works via the complex labyrinth that is the human ear. Sound is funneled through the external ear and piped into the external auditory canal. Then, sound waves reach the tympanic membrane, or eardrum. This is a thin sheet of connective tissue that vibrates when sound waves strike it.
The vibrations travel to the middle ear. There, the auditory ossicles — three tiny bones called the malleus (hammer), incus (anvil) and stapes (stirrup) — vibrate. The stapes bone, in turn, pushes a structure called the oval window in and out, sending vibrations to the organ of Corti, according to the National Library of Medicine (NLM). This spiral organ is the receptor organ for hearing. Tiny hair cells in the organ of Corti translate the vibrations into electrical impulses. The impulses then travel to the brain via sensory nerves.
People retain their sense of balance because the Eustachian tube, or pharyngotympanic tube, in the middle ear equalizes the air pressure in the middle ear with the air pressure in the atmosphere. The vestibular complex, in the inner ear, is also important for balance, because it contains receptors that regulate a sense of equilibrium. The inner ear is connected to the vestibulocochlear nerve, which carries sound and equilibrium information to the brain.
smell.
Humans may be able to smell over 1 trillion scents, according to researchers. They do this with the olfactory cleft, which is found on the roof of the nasal cavity, next to the "smelling" part of the brain, the olfactory bulb and fossa. Nerve endings in the olfactory cleft transmit smells to the brain, according to the American Rhinologic Society.
Dogs are known as great smellers, but research suggests that humans are just as good as man's best friend. Research published in the May 11, 2017, issue of the journal Science suggests that humans can discriminate among 1 trillion different odors; it was once believed that humans could take in only 10,000 different smells.