Chapter 7:7 Special Senses

If sound waves are not being conducted to the inner ear, this causes a/an ______ hearing loss of deafness. Damage to the inner ear of auditory nerve causes a _____ hearing loss or deafness.

1. conductive 2. sensory

How many smells can a human nose detect?

6k

Myopia

nearsightedness

Name five general sense recpetors

1. heat 2. cold 3. touch 4. pain 5. pressure

Special Senses occur because the body has organs that recieve____, nerves that carry the message to the ____, and a brain that____ and ____ to sensory messages.

1. sensations 2. brain 3. interprets 4. responds

What determines the sense of smell

Alfactury repecptors

Otitis Media

An infection of the middle ear

Anterior Chamber

Clear watery fluid that fills space between the cornea and iris

Name five parts of the eye that the light rays pass through to focus the retina

Cornea, anterior chamber, pupil, lens, aqueous humor

What is cerumen and what is its function?

It is wax that protects the ear.

What is the eustacian tube? what does it do?

Middle ear is a tube that allows to equalize air pressure on both sides of the tympanic membrane

Sclera

Outer layer of the eye with tough connective tissue

Macular Degeneration

a disease of the central and most sensitive section of the retina that is a major cause of vision loss and blindness

Otosclerosis

a hearing loss caused by lack of movement of the stapes

Astigmatism

an abnormal shape or curvature in the cornea that causes blurred vision

Lens

circular structure located behind the pupil and suspended in position by ligaments

Conjunctivitis

contagious inflammation of conjunctiva

Cochlea

contains hair like cells

Strabismus

crossed eyes resulting from a weakness in eye muscles

Vestibule

entrance to ear

Presbyopia

farsightedness caused by a loss of elasticity in the lens

Glaucoma

increased intraocular pressure caused by an excess amount of aqueous humor

Retina

innermost layer of the eye

Cataract

lens become cloudy or opaque

Semicircular Canals

located in the inner ear that contains liquid and cells that bend when the liquid moves

Name the three ossicles of the middle ear

malleus, incus, stapes

Organ of Corti

receptor of sound waves

Iris

the colored portion of the eye