Chapter 10: Head, eyes, ears, nose, throat Flashcards
tinnitus
ringing in the ears
Six bones
form the skull
(one frontal bone, two parietal bones, two
temporal bones, and one occipital bone) and are fused
together at sutures.
The facial
muscles are innervated by cranial nerves
V (trigeminal) and
VII (facial).
sclera
is a tough, fibrous outer layer commonly
referred to as the white of the eye.
palpebral conjunctiva
lines the eyelids and contains
blood vessels, nerves, hair follicles, and sebaceous glands
cornea
tears supply oxygen.
allow light transmission
through the lens to the retina.
The central opening of the iris
the pupil,
allows light transmission to the retina through the transparent
lens.
The inner layer of the eye, the retina,
is an extension of the
central nervous system. This transparent layer has photoreceptor
cells, termed rods and cones
tempanic membrane TM
composed of layers of skin,
fibrous tissue, and mucous membrane, is shiny and pearl
gray.
the eustachian tube
It opens briefly during
yawning, swallowing, or sneezing to equalize the pressure of
the middle ear to the atmosphere.
organ of Corti
the structure that is responsible for
hearing. Specialized hair cells on the organ of Corti act as
sound receptors.
nasal cavity is lined
with
highly vascular mucous membranes containing cilia
(nasal hairs) that trap airborne particles and prevent them
from reaching the lungs.
make the skull lighter
air-filled cavities (i.e., sphenoid, frontal, ethmoid, and maxillary)
They
are lined with mucous membranes and cilia that move secretions
along excretory pathways.
thyroid gland, the largest endocrine gland in the body,
produces two hormones
thyroxine (T4) and triiodothyronine
(T3), which regulate cellular metabolism. Mental and
physical growth and development depend on thyroid hormones.
The most commonly reported problems related to the head
and related structures (eyes, ears, nose, throat, and neck)
include
headache, dizziness, difficulty with vision, hearing
loss, ringing in the ears, earache, nasal discharge, sore throat,
and mouth lesions.
a symptom analysis is completed using the mnemonic
OLD CARTS
includes the Onset, Location,
Duration, Characteristics, Aggravating factors, Related symptoms,
Treatment, and Severity
Dizziness
is a feeling of faintness
experienced within the patient.
vertigo
is a sensation
that the environment is whirling around external to the
patient. The perception of movement distinguishes dizziness
from vertigo
Sinus headaches
may cause tenderness over frontal or maxillary
sinuses.
Tension
Tension
described as viselike
migraine
unilateral produce throbbing
Cluster headaches
occur more than once a day
and last for less than an hour to about 2 hours
may occur with nasal stuffiness
or discharge, red teary eyes, or drooping eyelids.
head exam techniques
- INSPECT the head.
* INSPECT the facial structures.
eyes
• TEST visual acuity. • INSPECT the external ocular structures: • Eyebrows, eyelids, eyelashes • Conjunctiva • INSPECT the eyes. • INSPECT the corneal light reflex. • INSPECT the sclera. • INSPECT the cornea transparency and surface characteristics. • INSPECT the iris. • INSPECT the pupils.
ears
- ASSESS hearing based on response from conversation.
- INSPECT the external ears.
- INSPECT the external auditory meatus
special
- PALPATE the external ears and mastoid areas.
- INSPECT the internal ear structures:
- External ear canal
- Tympanic membrane
- TEST auditory function
mouth
• INSPECT the lips.
• INSPECT the teeth and gums.
• INSPECT the tongue.
• INSPECT the buccal mucosa and anterior and posterior
pillars.
• INSPECT the palate, uvula, posterior pharynx, and tonsils
special
• PALPATE the teeth, inner lips, and gums.
• PALPATE the tongue.
neck
- INSPECT the neck:
- Appearance
- Position
- Skin characteristics
neck spacial cicumstances
- INSPECT the neck:
- Range of motion
- PALPATE the neck:
- Anatomic structures
- Tenderness
- Muscle strength
- Thyroid gland
head special circumstances
- PALPATE structures of the skull.
- PALPATE the bony structures of the face and jaw.
- PALPATE the temporal arteries
eyes special circumstances
- ASSESS the visual fields for peripheral vision.
- ASSESS eye movement:
- Six cardinal fields of gaze
- Cover-uncover test
- PALPATE the eye, eyelids, and lacrimal puncta.
- TEST the corneal reflex.
- INSPECT the anterior chamber.
- INSPECT intraocular structures:
- Red reflex
- Optic disc
- Retinal vessels
- Retinal background
- Macula
PERRLA
Pupils are Equal and Round and React to Light and Accommodation.