(pros′es″)

[L. processus, going forwards, an advance]

1. A method of action.
2. The state of progress of a disease.
3. A projection or outgrowth of bone or tissue.
4. A series of steps or events that lead to achievement of specific results.

acromial process

Acromion.

acromion process

Acromion.

alar process

The process of the cribriform plate of the ethmoid bone that articulates with the frontal bone.

aliform process

Wing of the sphenoid bone.

alveolar process

The portion of the mandible and maxilla containing the tooth sockets.
SYN: alveolar bone

articular process of vertebra

One of four small, flat processes (two superior and two inferior) by which vertebrae articulate with each other.

basilar process

The narrow part of the base of the occipital bone, in front of the foramen magnum, articulating with the sphenoid bone.
SYN: pars basilaris ossis occipitalis

caudate process

The process of the caudate lobe of the liver extending under the right lobe.

ciliary process

One of about 70 prominent meridional ridges projecting from the corona ciliaris of the choroid coat of the eye to which the suspensory ligament of the lens is attached. These have the same structure as the rest of the choroid and secrete aqueous humor, which nourishes neighboring parts, the cornea, and lens.

clinoid process

Any of three pairs of bony processes on the top of the body of the sphenoid bone, overhanging the edges of the sella turcica.

condyloid process

A posterior process on the superior border of the ramus of the mandible consisting of a capitulum and neck. It articulates with the mandibular fossa of the temporal bone.
SEE: mandible for illus

coracoid process

A beak-shaped process extending upward and laterally from the neck of the scapula. The coracoid process is not part of any bone-to-bone articulation although the coracoclavicular ligament holds the clavicle against the acromium of the scapula. The muscles attaching to the coracoid process are the pectoralis major, coracobrachialis, and the short head of the biceps brachii.
SEE: scapula

coronoid process

1. The process on the proximal end of the ulna that forms the anterior portion of the semilunar notch.
2. The process on the anterior upper end of the ramus of the mandible that serves for attachment of the temporalis muscle.
SEE: mandible for illus

due process

The standard or customary application of prevailing laws or rules and the protections that follow from their application.

ensiform process

Xiphoid process.

ethmoidal process

A small process on the superior border of the inferior concha that articulates with the uncinate process of the ethmoid.

falciform process

An extension of the posterior edge of the sacrotuberous ligament to the ramus of the ischium.

frontal process

An upward projection of the maxilla that articulates with the frontal bone; forms part of the orbit and nasal fossa.

frontonasal process

In the area of the primitive mouth of the embryo, a median swelling that is the precursor of the nose, upper lip, and front part of the palate.

frontosphenoidal process

The upward-projecting process of the zygomatic bone.

funicular process

The part of the tunica vaginalis that covers the spermatic cord.

head process

An axial strand of cells in vertebrate embryos extending forward from the primitive knot. It forms a primitive axis about which the embryo differentiates.

horizontal process

The part of the palatine bone that fuses with its counterpart at the midline to form the dorsal extension of the hard palate.

infraorbital process

The medially projecting process of the zygomatic bone that articulates with the maxilla. It forms the inferior lateral margin of orbit.

jugal process

A temporal bone process forming the zygomatic arch.

jugular process

A process of the occipital bone lying lateral to the occipital condyle.

lacrimal process

A short process of the inferior concha that articulates with the lacrimal bone.

lenticular process

A knob on the incus, an auditory ossicle. articulating with the stapes.

malar process

A projection from the maxilla that articulates with the zygomatic bone.

mandibular process

The posterior portion of the first branchial arch from which the lower jaw develops.

mastoid process

A horn-shaped process of the mastoid portion of the temporal bone extending downward and forward behind the external auditory meatus. It serves for attachment of the sternocleidomastoid, splenius capitis, and longissimus capitis muscles.

maxillary process

1. The anterior portion of the first branchial arch, which, with medial nasal processes, forms the upper jaw.
2. The process of the inferior nasal concha extending laterally and covering the orifice of the antrum.
3. A process on the anterior border of the perpendicular portion of the palatine bone.

nursing process

SEE: nursing process

odontoid process

A toothlike process extending upward from the axis and about which the atlas rotates.
SYN: dens

ODONTOID PROCESS Articulation of atlas and axis

olecranon process

Olecranon.

orbicular process

Lenticular process.

orbital process

1. The process at the tip of the perpendicular portion of the palatine bone directed upward and backward.
2. The process of the zygomatic bone that forms the anterior boundary of the temporal fossa.

palatine process

A process extending transversely from the medial surface of the maxilla. With the corresponding process from the other side, it forms the major portion of the hard palate.

postglenoid process

The process of the temporal bone separating the mandibular fossa from the external acoustic meatus.

pterygoid process

The process of the sphenoid bone extending downward from the junction of the body and great wing. It consists of the lateral and medial pterygoid plates, which are fused at the top. The top of the pterygoid process is pierced by the pterygoid canal.

spinous process

The prominence at the posterior part of each vertebra.

spinous process of vertebrae

The posteriormost part of a vertebra. This spine projects back and serves as a point of attachment for muscles of the back.

styloid process

1. A pointed process of the temporal bone, projecting downward, and to which some of the muscles of the tongue are attached.
2. A pointed projection behind the head of the fibula.
3. A protuberance on the outer portion of the distal end of the radius.
4. An ulnar projection on the inner side of the distal end.

transverse process

The process extending laterally and dorsally from the arch of a vertebra.

unciform process

1. A long thin lamina of bone from the orbital plate of the ethmoid articulating with the inferior turbinate.
2. The hook at the anterior end of the hippocampal gyrus.
3. The hooked end of the unciform bone.

uncinate process of the ethmoid bone

A sickle-shaped bony process on the medial wall of the ethmoidal labyrinth below the concha.

vermiform process

Vermiform appendix.

vocal process

The process of the arytenoid cartilage that serves for attachment of the vocal cord.

xiphoid process

The lowest portion of the sternum; a sword-shaped cartilaginous process supported by bone. No ribs attach to the xiphoid process; however, some abdominal muscles are attached. The xiphoid process ossifies in the aged
SYN: ensiform process; xiphisternum