Biology 120 ww5Medical Terminology

Chapter 13 Presentation

The Special Senses

By: Jennifer Stevenson

Pressure Equalizing Tube

• Abbreviation:

PE tube

Pressure Equalizing Tube

• A small tube that is surgically inserted into the eardrum. It may be required due to:

- A substantial hearing loss in patients with otitis media

- Poor response to antibiotics

- Otitis media with fluid for more than 3 months

- Recurrent episodes of acute otitis media

- Chronic retraction of the eardrum.

- Significant eustachian tube problems with flying or altitude changes

eye, ear, nose, and throat

• Abbreviation: EENT

eye, ear, nose, and throat

• A term used for a specialty that doctors may choose to practice that involves the eyes, ears, nose and throat.

Bone Conduction

Bone Conduction• Abbreviated BC• The conduction of sound to the inner ear through the bones of

the skull.• Bone conduction is the reason why a person's voice sounds

different to him/her when it is recorded and played back. 

• There are 2 types of bone conduction that are recognized

-compressional bone conduction: high pitched sounds cause segments of the skull to vibrate

individually which stimulate the sensory cells that are involved in receiving sound waves in the air.

-inertial bone conduction: low pitched sounds vibrate the entire skull, causing it to move while the suspended sensory parts of the inner ear remain at rest.

Both ears

• Abbreviated AU

• Abbreviation used in charting to quickly denote that the patient is having issues with both of their ears.

Otitis Media

Otitis Media

• Abbreviated OM

• Inflammation of the middle ear, a middle ear infection.

• Usually what is the cause for most ear aches, the other being otitis externa.

• Though severely painful, otitis media is not threatening and usually heals on its own within 2–4 weeks.

Emmetropia

emmetropia

• Abbreviated EM

• The condition of the normal eye when parallel rays are focused exactly on the retina and vision is perfect.

• An emmetropic eye does not need corrective lenses.

exotropia

exotropia

• Abbreviated XT

• refers to an outward deviation of the eyes (outward drift)

• Although it commonly begins around age 2 to 4 years, it can appear at any age.

Left eye

• Abbreviated OS

Extraocular movement

Extraocular movement

• Abbreviated EOM

• Movements of the eye

Visual acuity

Typical Snellen chart used for visual acuity testing

Visual acuity

• Abbreviated VA

• Is acuteness or clearness of vision, which is dependent on the sharpness of the retinal focus within the eye and the sensitivity of the interpretative faculty of the brain.