mastoid process


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.

process

 [pros´es]
1. a prominence or projection, as from a bone.
2. a series of operations or events leading to achievement of a specific result.
3. to subject to such a series to produce desired changes.
acromial process acromion.
altered family p's former name for the nursing diagnosis interrupted family processes.
alveolar process the part of the bone in either the maxilla or mandible that surrounds and supports the teeth.
basilar process a quadrilateral plate of the occipital bone projecting superiorly and anteriorly from the foramen magnum.
calcaneal process of cuboid bones a process projecting posteriorly from the inferomedial angle of the cuboid bone that supports the anterior calcaneus.
caudate process the right of the two processes on the caudate lobe of the liver.
ciliary p's meridionally arranged ridges or folds projecting from the crown of the ciliary body.
clinoid process any of three processes of the sphenoid bone (anterior, medial, and posterior).
coracoid process a curved process arising from the upper neck of the scapula and overhanging the shoulder joint; called also coracoid.
coronoid process
1. the anterior part of the upper end of the ramus of the mandible.
2. a projection at the proximal end of the ulna.
disturbed thought p's a nursing diagnosis approved by the North American Nursing Diagnosis Association, defined as the experiencing by an individual of disruption in cognitive operations and activities; it is related to various mental and personality disorders. Contributing factors include physiologic changes, psychologic conflicts, memory loss, impaired judgment, and sleep deprivation. Defining characteristics include inaccurate interpretation of the environment; cognitive dissonance; distractibility; decreased ability to grasp ideas; impaired ability to make decisions, solve problems, or reason; disorientation to time, place, person, circumstances, or events; and inappropriate or nonreality-based thinking.
dysfunctional family p's: alcoholism a nursing diagnosis approved by the North American Nursing Diagnosis Association, defined as psychosocial, spiritual, and physiological functions of the family unit that are chronically disorganized, leading to conflict, denial of problems, resistance to change, ineffective problem solving, and a series of self-perpetuating crises. See also alcoholism.
ensiform process xiphoid process.
ethmoid process a bony projection above and behind the maxillary process of the inferior nasal concha.
family p's the psychosocial, physiological, and spiritual functions and relationships within the family unit; nursing diagnoses include dysfunctional family processes: alcoholism and interrupted family processes.
frontonasal process frontonasal prominence.
interrupted family p's a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as a change in family relationships and/or functioning.
malar process zygomatic process of the maxilla.
mammillary process a tubercle on each superior articular process of a lumbar vertebra.
mandibular process mandibular prominence.
mastoid process a conical projection at the base of the mastoid portion of the temporal bone.
maxillary process
2. a bony process descending from the ethmoid process of the inferior nasal concha.
nursing process see nursing process.
odontoid process a toothlike projection of the axis that articulates with the atlas.
pterygoid process either of the two processes of the sphenoid bone, descending from the points of junction of the great wings and the body of the bone, and each consisting of a lateral and a medial plate.
spinous process of vertebra a part of a vertebra projecting backward from the arch, giving attachment to muscles of the back.
styloid process a long, pointed projection, particularly a long spine projecting downward from the inferior surface of the temporal bone.
temporal process the posterior blunt process of the zygomatic bone that articulates with the zygomatic process of the temporal bone to form the zygomatic arch.
uncinate process any hooklike process, as of vertebrae, the lacrimal bone, or the pancreas.
xiphoid process the pointed process of cartilage, supported by a core of bone, connected with the lower end of the sternum; called also xiphoid.
The xiphoid process. Redrawn from Applegate, 1995.
zygomatic process a projection in three parts, from the frontal bone, temporal bone, and maxilla, by which they articulate with the zygomatic bone (see Appendix 3-3).

mas·toid pro·cess

[TA]
the nipplelike projection of the petrous part of the temporal bone.

mastoid process

n.
A conical protuberance of the posterior portion of the temporal bone that is situated behind the ear in humans and many other vertebrates and serves as a site of muscle attachment. Also called mastoid bone.

mastoid process

the irregular conic projection of the caudal, posterior part of the temporal bone, serving as the attachment for various muscles, including the sternocleidomastoideus, splenius capitis, and longissimus capitis. A hollow section of the process contains air cells that are distinguished from a large, irregular tympanic antrum in the superior anterior part of the process. See also temporal bone.

mastoid process

A conical anteroinferior projection from the undersurface of the mastoid portion of the temporal bone just behind the external acoustic meatus and lateral to the styloid process.

mas·toid pro·cess

(mas'toyd pros'es) [TA]
The nipplelike projection of the petrous part of the temporal bone.
Synonym(s): mastoid bone.

mastoid process

or

mastoid bone

the part of the periotic bone that in humans forms a projection behind the ear.

Mastoid process

The protrusions of bone behind the ears at the base of the skull.

mastoid process (masˈ·toid prˈ·ses),

n bony prominence located behind the ear at the base of the skull.
Enlarge picture
Mastoid process.

process

1. a prominence or projection, as from a bone.
2. a series of operations or events leading to achievement of a specific result; also, to subject to such a series to produce desired changes.

accessory vertebral process
a process which protrudes backwards from the vertebral arch of the thoracic and lumbar vertebrae and overlap the succeeding vertebra in dogs and some other species.
acromial process
acromion.
alveolar process
the part of the bone in either the maxilla or mandible that surrounds and supports the teeth.
anconeal process
the point of the elbow; a prolongation vertically of the ulna.
articular process
one of the pair of processes at each end of a typical vertebrae which articulate with adjacent vertebral articular processes.
arytenoid cartilage corniculate process
a horn-like process which extends dorsomedially and forms one side of the caudal margin of the entrance to the larynx.
basihyoid lingual process
a median process which projects from the basihyoid bone into the root of the tongue in the horse and cow.
basilar process
a quadrilateral plate of the occipital bone projecting superiorly and anteriorly from the foramen magnum.
caudate process
the right of the two processes on the caudate lobe of the liver.
ciliary p's
meridionally arranged ridges or folds projecting from the crown of the ciliary body.
clinoid process
any of the three (anterior, medial and posterior) processes of the sphenoid bone.
condylar process
carries the articular surface with which the mandible articulates with the temporal bone at the temporomandibular joint.
coracoid process
a small curved process arising from the glenoid rim and neck of the scapula; called also coracoid; large in humans and animals with large clavicles.
coronoid process
1. the anterior part of the upper end of the ramus of the mandible.
2. a projection at the proximal end of the ulna. See also coronoid process.
distal phalangeal extensor process
the process on the dorsal border of the distal phalanx to which the common digital extensor tendon is attached.
ensiform process
xiphoid process.
ethmoid process
a bony projection above and behind the maxillary process of the inferior nasal concha of some species.
frontal process
1. of the zygomatic bone forms the anterior part of the zygomatic process.
2. a cone-shaped mass of red vascular tissue that lies across the base of the turkey's beak. Called also snood, nasal comb.
frontal bone cornual process
the bony core of the horn which projects from the frontal bone.
frontonasal process
an expansive facial process in the embryo that develops into the forehead and upper part of the nose.
malar process
zygomatic process of the maxilla.
mamillary process
a tubercle on each cranial articular process of a lumbar vertebra.
mandibular angular process
a process which protrudes from the ventral caudal angle of the mandible, and acts as the attachment of the digastric muscle.
mastoid process
a conical projection at the base of mastoid portion of temporal bone.
odontoid process
a toothlike projection of the axis that articulates with the atlas. See also dens.
paracondylar process
a prominent process lateral to the occipital condyle at the caudal extremity of the skull.
pterygoid process
one of the wing-shaped processes of the sphenoid bone.
retroarticular process
a flange of bone which protrudes ventrally from the caudal end of the zygomatic arch; carries part of the articular surface of the temporomandibular joint on its rostral edge.
spinous process of vertebrae
a dorsal median process of a vertebra giving attachment to muscles of the back.
styloid process
a long, pointed projection, particularly a long spine projecting downward from the inferior surface of the temporal bone.
suprahamate process
a flat, caudally directed process on the acromion of cats and some other species.
tail vertebral hemal process
paired ventral processes of the more cranial tail vertebrae; the coccygeal vessels run between them.
uncinate process
any hooklike process, as of vertebrae, the lacrimal bone, or the pancreas.
urethral process
an extension of the urethra beyond the end of the glans penis in the male horse, sheep and goat. In the horse it is buried in a deep recess. In the small ruminants it is a thin, loose, wormlike appendage.
xiphoid process
the caudal sternebra, consisting of a rod of bone that typically supports a xiphoid cartilage. Called also xiphoid.
zygomatic process
a projection from the frontal or temporal bone, or from the maxilla, by which they articulate with the zygoma.
References in periodicals archive ?
The mastoid antrum was absent, with the mastoid process represented by a solid block of bone (figure).
The stylohyoid ligament connects the apex of the styloid process and the lesser horn of the hyoid bone, and the stylomandibular ligament extends from the styloid process to the parotideomasseteric fascia between the mandible and the mastoid process.
4) However, Morocco reported a case of multiple osteomas of the mastoid process that were growing from the inner table.
Computed tomography (CT) of the head and sinuses revealed erosion of the left mastoid process with opacification of mastoid air cells.
Computed tomography (CT) of the brain and temporal bone demonstrated an extensive opacification of the right mastoid process and indications of erosion of the mastoid surface that created an opening to the posterior cranial fossa at the level of the sigmoid sinus (figure 1).