nasal fossa


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Related to nasal fossa: nasal concha, mental ridge

fossa

 [fos´ah] (pl. fos´sae) (L.)
a trench or channel; in anatomy, a hollow or depressed area.
amygdaloid fossa the depression in which the tonsil is lodged.
cerebral fossa any of the depressions on the floor of the cranial cavity.
condylar fossa (condyloid fossa) either of two pits on the lateral portion of the occipital bone.
coronoid fossa a depression in the humerus for the coronoid process of the ulna.
cranial fossa any one of the three hollows (anterior, middle, and posterior) in the base of the cranium for the lobes of the brain.
digastric fossa a depression on the inner surface of the mandible, giving attachment to the anterior belly of the digastric muscle.
epigastric fossa
1. one in the epigastric region.
ethmoid fossa the groove in the cribriform plate of the ethmoid bones, for the olfactory bulb.
glenoid fossa mandibular fossa.
hyaloid fossa a depression in the front of the vitreous body, lodging the lens.
hypophyseal fossa a depression in the sphenoid lodging the pituitary gland; called also pituitary fossa.
iliac fossa a concave area occupying much of the inner surface of the ala of the ilium, especially anteriorly; from it arises the iliac muscle.
incisive fossa a slight depression on the anterior surface of the maxilla above the incisor teeth.
infraclavicular fossa the triangular region of the chest just below the clavicle, between the deltoid and pectoralis major muscles.
infratemporal fossa an irregularly shaped cavity medial or deep to the zygomatic arch.
interpeduncular fossa a depression on the inferior surface of the midbrain, between the two cerebral peduncles, the floor of which is the posterior perforated substance.
ischiorectal fossa a potential space between the pelvic diaphragm and the skin below it; an anterior recess extends a variable distance.
mandibular fossa a depression in the inferior surface of the pars squamosa of the temporal bone at the base of the zygomatic process, in which the condyle of the mandible rests; called also glenoid fossa.
mastoid fossa a small triangular area between the posterior wall of the external acoustic meatus and the posterior root of the zygomatic process of the temporal bone.
nasal fossa the portion of the nasal cavity anterior to the middle meatus.
navicular fossa
1. the lateral expansion of the urethra of the glans penis.
2. a depression on the internal pterygoid process of the sphenoid, giving attachment to the tensor veli palatini muscle.
fossa ova´lis cor´dis a fossa in the right atrium of the heart; the remains of the fetal foramen ovale.
fossa ova´lis fe´moris the depression in the fascia lata that is bridged by the cribriform fascia and perforated by the great saphenous vein.
ovarian fossa a shallow pouch on the posterior surface of the broad ligament of the uterus in which the ovary is located.
paravesical fossa the fossa formed by the peritoneum on each side of the urinary bladder.
pituitary fossa hypophyseal fossa.
popliteal fossa the hollow at the posterior part of the knee.
subarcuate fossa a depression in the posterior inner surface of the pars petrosa of the temporal bone.
subpyramidal fossa a depression on the internal wall of the middle ear.
subsigmoid fossa a fossa between the mesentery of the sigmoid flexure and that of the descending colon.
supraspinous fossa a depression above the spine of the scapula.
temporal fossa an area on the side of the cranium bounded posteriorly and superiorly by the temporal lines, anteriorly by the frontal and zygomatic bones, and laterally by the zygomatic arch, lodging the temporal muscle.
tibiofemoral fossa a space between the articular surfaces of the tibia and femur mesial or lateral to the inferior pole of the patella.
urachal fossa one on the inner abdominal wall, between the urachus and the hypogastric artery.
vestibular fossa (fossa of vestibule of vagina) the vaginal vestibule between the vaginal orifice and the fourchette (frenulum of pudendal labia). Called also navicular fossa.

nasal fossa

(1) Nasal cavity, see there.
(2) The space in the nasal cavity that is further subdivided by the projections of the nasal conchae.

nasal fossa

See Nasal cavity.
References in periodicals archive ?
4 Severe Symptoms disturbing daily normal activity Table 2: Nasal Secretions Score (Average no of nose blowing per day) 1 Absent 2 1-5 3 6-10 4 11 or more Table 3: Objective Nasal obstruction score 1 Inferior turbinate occupying < 25 % of nasal fossa 2 Inferior turbinate occupying > 25 % to 50 % of nasal fossa 3 Inferior turbinate occupying > 50% but < 100 % of nasal fossa 4 Inferior turbinate touching the nasal septum--100 % Table 4: Post-Operative Subjective Score Scores Improvement 1 Symptoms free Significant improvement 2 Symptoms persists but not Moderate improvement troublesome.
The most common site of CSF leakage is through the floor of the anterior fossa, which communicate with the ethmoid or frontal sinuses or with the nasal fossa, the sphenoid sinus is rarely implicated as a source of spontaneous CSF fistula communication with the middle cranial fossa.
We report a case of brown tumor of the right nasal fossa in a 71-year-old woman.
THE NASAL SEPTUM: The medial wall of each nasal fossa is formed by the nasal septum.
The most cited prognostic factors for lymphomas of the sinonasal tract Good prognosis Poor prognosis Reference Phenotype B Phenotype T 5,9,11,20 Age <60 yr Age >60 yr 6,10,20 Stage IE * Stage >IE 8,11,17,20 No systemic symptoms Systemic symptoms 20 Low-grade tumor High-grade tumor 11,17,20 Disease in a maxillary Disease in an ethmoid 91,120 sinus sinus Disease in a paranasal Disease in a nasal fossa 5,20 sinus EBV ([dagger]) negativity EBV positivity 20 * Stage I extrahmphatic disease ([dagger]) Epstein-Bars virus.
The ethmoidal sinus is most commonly involved, followed by the maxillary sinus, nasal fossa and sphenoid sinus.
Magnetic resonance imaging (MRI) revealed that a 5.2 x 3.0 x 6.8-cm soft-tissue mass involved the right nasal fossa with deviation of the septum and extension into the left nasal cavity (figure 1).
Particular attention was paid to visualize the nasal fossa area where earlier neo-ostium was created; whether it is covered with membrane or granulation tissue or thick scar.