| C1 | first cervical nerve; first cervical vertebra; first component of complement |
|---|---|
| C2 | second cervical nerve; second cervical vertebra; second component of complement |
| C3 | third cervical nerve; third cervical vertebra; third component of complement |
| C4 | fourth cervical nerve; fourth cervical vertebra; fourth component of complement |
| C5 | fifth cervical nerve; fifth cervical vertebra; fifth component of complement |
| alar part of nasalis muscle | <anatomy> See: nasalis muscle. Synonym: pars alaris musculi nasalis. (05 Mar 2000) |
|---|---|
| alar plate of neural tube | The dorsal division of the lateral walls of the neural tube in the embryo; it gives rise to neurons relaying afferent impulses to higher centres; in the adult such neurons compose the sensory nuclei of the spinal cord and brainstem. Synonym: lamina alaris, alar plate of neural tube, dorsolateral plate of neural tube, lamina dorsalis, wing plate. (05 Mar 2000) |
| alar process | A small lateral expansion of the ethmoid bone from the front of the crista galli on each side that articulates with the frontal bone and forms the foramen caecum. Synonym: ala cristae galli, alar process. (05 Mar 2000) |
| alar spine | A posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so-named for its proximity to the sphenoidal spine; gives attachment to the sphenomandibular ligament. Synonym: processus spinosus, spina ossis sphenoidalis, alar spine, angular spine, spina angularis, spinous process. (05 Mar 2000) |
| medial crus of greater alar cartilage of nose | Portion of cartilage that forms the anterioinferior portion of the cartilaginous septum between nostrils. Synonym: crus mediale cartilaginis alaris majoris. (05 Mar 2000) |
| greater alar cartilage | One of a pair of cartilages that form the tip of the nose. It consists of a medial crus that extends into the nasal septum with its fellow of the opposite side, and a lateral crus that forms the anterior part of the wing of the nose. Synonym: cartilago alaris major. (05 Mar 2000) |
| lateral crus of the greater alar cartilage of the nose | Portion of cartilage extending laterally and posteriorly in a wing-like fashion, supporting the wing of the nose and keeping the nostril patent. Synonym: crus laterale cartilaginis alaris majoris. (05 Mar 2000) |
| lesser alar cartilages | The two to four cartilaginous plates of the wing of the nose posterior to the greater alar cartilage. Synonym: cartilagines alares minores, accessory quadrate cartilage. (05 Mar 2000) |
| rapture of the deep | See: nitrogen narcosis. (05 Mar 2000) |
| preauricular deep parotid lymph nodes | Small lymph nodes located deep to the parotid fascia and in front of the ear. Synonym: preauricular deep parotid lymph nodes. (05 Mar 2000) |
| skin-deep | Not deeper than the skin; hence, superficial. Source: Websters Dictionary (01 Mar 1998) |
| small deep petrosal nerve | <anatomy, nerve> One of two sympathetic branches from the internal carotid plexus to the tympanic plexus. Synonym: nervus caroticotympanicus, small deep petrosal nerve. (05 Mar 2000) |
| deep | 1. Extending far below the surface; of great perpendicular dimension (measured from the surface downward, and distinguished from high, which is measured upward); far to the bottom; having a certain depth; as, a deep sea. "The water where the brook is deep." (Shak) 2. Extending far back from the front or outer part; of great horizontal dimension (measured backward from the front or nearer part, mouth, etc); as, a deep cave or recess or wound; a gallery ten seats deep; a company of soldiers six files deep. "Shadowing squadrons deep." (Milton) "Safely in harbor Is the king's ship in the deep nook." (Shak) 3. Low in situation; lying far below the general surface; as, a deep valley. 4. Hard to penetrate or comprehend; profound; opposed to shallow or superficial; intricate; mysterious; not obvious; obscure; as, a deep subject or plot. "Speculations high or deep." (Milton) "A question deep almost as the mystery of life." (De Quincey) "O Lord, . . . Thy thought are very deep." (Ps. Xcii. 5) 5. Of penetrating or far-reaching intellect; not superficial; thoroughly skilled; sagacious; cunning. "Deep clerks she dumbs." (Shak) 6. Profound; thorough; complete; unmixed; intense; heavy; heartfelt; as, deep distress; deep melancholy; deep horror. "Deep despair." . "Deep silence." . "Deep sleep." . "Deeper darkness." . "Their deep poverty." . "An attitude of deep respect." (Motley) 7. Strongly coloured; dark; intense; not light or thin; as, deep blue or crimson. 8. Of low tone; full-toned; not high or sharp; grave; heavy. "The deep thunder." "The bass of heaven's deep organ." (Milton) 9. Muddy; boggy; sandy; said of roads. "The ways in that vale were very deep." (Clarendon) A deep line of operations, mourning complete and strongly marked, the garments being not only all black, but also composed of lusterless materials and of such fashion as is identified with mourning garments. Origin: OE. Dep, deop, AS. Deop; akin to D. Diep, G. Tief, Icel. Djpr, Sw. Diup, Dan. Dyb, Goth. Diups; fr. The root of E. Dip, dive. See Dip, Dive. Source: Websters Dictionary (01 Mar 1998) |
| deep abdominal reflexes | Contraction of abdominal muscles elicited by stimulation, such as tapping a deep structure; e.g., the costal margin. See: Galant's reflex, upper abdominal periosteal reflex. (05 Mar 2000) |
| deep artery of clitoris | The deep terminal branch of the internal pudendal artery in the female; it supplies the crus of the clitoris. Synonym: arteria profunda clitoridis. (05 Mar 2000) |