Shared Flashcard Set

Details

A&P Lab Quiz
Sensory Systems
26
Medical
Graduate
03/06/2008

Additional Medical Flashcards

 


 

Cards

Term

Otitis Externa

 

Causes

Definition

trauma to the canal

humidity

dry skin

foreign bodies

lack of cerumen

eczema

dermatitis

Term

Otitis Externa

 

Signs and Symptoms

Definition

pain

pruritis (itching)

erythema (redness) of canal

canal drainage

edema (increase in interstitial fluid - swelling)

cervical lymphadenopathy (swollen cervical lymph nodes)

conductive hearing loss

Term

Otitis Externa

 

Treatment

Definition

dry canal

antibiotic drops

oral antibiotics

antiinflammatory meds

Term

Acute Otitis Media

(AOM)

 

Causes

Definition

Usually follows URI (viral)

allergies

 

Eustachan tubes blocked with secretions, fluid accumulates

Term

Acute Otitis Media

(AOM)

 

Signs and symptoms

Definition

otalgia

hearing loss

vertigo

many non specific symptoms

 

TM bulging

inflamed

erythermatous (causing redness)

distorted bony landmarks

+/- perforation

Term

Acute Otitis Media

(AOM)

 

Treatment

Definition

antibiotics (especially <6 months)

vs.

observation

pain control

tympanostomy tubes for chronic effusion

Term
Inner Ear
Definition

Cochlea

 

Semicircular Canals

 

Vestibule

Term
Cochlea
Definition

Hearing

 

Houses organ of corti

pressure waves (sound) --> liquid waves (mechanical energy) --> auditory nerve (electrical energy) --> brain

Term
Semicircular Canals
Definition

Equalibrium

 

superior

lateral

posterior

 

sense angular and rotational movements of the head

Term
Vestibule
Definition

Equalibrium

 

Utricle and Saccule

 

sense acceleration and deceleration of the head

Term

[image]

The Organ of Corti

Definition

Part of CN VIII

 

Sound waves vibrate basilar membrane

 

Shearing force b/w basilar membrane and tectoarial membrane cause steriocila to bend

 

Auditory nerve fibers pass signal to auditory cortex in the brain

Term
[image]
Definition
Organ of Corti
Term

Myopia

Definition

image focused IN FRONT of the retina

 

eyball axis is too LONG or refractive power is too STRONG

 

*most common refractive error in children

 

DISTANT objects appear out of focus

 

NEARSIGHTEDNESS

Term

[image]

[image]

Definition

Myopia

 

Treatment of Myopia with Concave Lens

Term

Hyperopia

Definition

image focused BEHIND the retina

 

eyeball axis is too SHORT or refractive power is too WEAK

 

CLOSE OBJECTS appear out of focus

 

FARSIGHTEDNESS

Term

[image]

[image]

Definition

Hyperopia

 

Hyperopia treated with Convex Lens

Term

Astigmatism

 

Cause

 

Symptoms

Definition

Caused by abnormal corneal curvature

 

Objects at ALL DISTANCES appear blurred

 

Light rays focus at different areas

 

May be accompanied by myopia or hyperopia

Term

[image]

[image]

Definition
Astigmatism
Term

Presbyopia

 

What is it?

 

When does it occur?

 

What happens?

Definition

Lens loses its FLEXABILITY

can no longer vary focus

 

AGE 40 - 50

 

Difficult to focus on near objects

 

Corrective lenses required

Term
[image]
Definition

Retina Histology

 

LAYERS

Term

The sense of smell is activated by substances carried by airborne molecules into the nasal cavities, where the substances activate highly specialized receptors for smell, located in the olfactory epithelium. From there messages are carried directly to the olfactory bulb in the brain, where they are sent to the brain’s temporal lobe, resulting in our awareness of smells.

Definition
[image]
Term

[image]

Definition
Olfactory Mucosa
Term
[image]
Definition
Olfactory Mucosa
Term

Taste buds- most on the POSTERIOR PORTION of the tongue, contain gustatory cells (live 7-10 days)

 

Nerve impulses from gustatory cells are conducted via CNVII (facial- anterior 2/3) and CNIX (glossopharyngeal- posterior 1/3) to the brain

Definition
[image]
Term

Pain

 

Nociception

 

What is it?!?

Definition

Physiological Pain

 

The non concious perception of near-damage or damage to tissue

Term

Pain

 

How is it classified?

Definition

From 1 - 3 Senses depending on the classification method

 

Cutaneous (skin)

 

Somatic (joints and bones)

 

Visceral (body organs)

Supporting users have an ad free experience!