| lambdoid border of occipital bone |
<anatomy> The margin of the occipital squama that articulates with the parietal bones in the lambdoid suture.
Synonym: margo lambdoideus squamae occipitalis, lambdoid margin of occipital bone.
(05 Mar 2000) |
| frontal border of parietal bone |
The margin of the parietal bone that articulates with the frontal bone.
Synonym: margo frontalis ossis parietalis.
(05 Mar 2000) |
| sphenoid |
1. Wedge-shaped; as, a sphenoid crystal.
2. <anatomy> Of or pertaining to the sphenoid bone.
<anatomy> Sphenoid bone, an irregularly shaped bone in front of the occipital in the base of the skull of the higher vertebrates. It is composed of several foetal bones which become united the adult. See Alisphenoid, Basisphenoid, Orbitosphenoid, Presphenoid.
Origin: Gr.; a wedge + form: cf. F. Sphenoide.
1. <chemistry> A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid.
2. <anatomy> The sphenoid bone.
Source: Websters Dictionary
(01 Mar 1998) |
| sphenoid crest |
A vertical ridge in the midline of the anterior surface of the sphenoid bone that articulates with the perpendicular plate of the ethmoid bone.
Synonym: crista sphenoidalis.
(05 Mar 2000) |
| sphenoid process |
The posterior and smaller of the two processes at the extremity of the vertical plate of the palatine bone; processus sphenoidalis cartilaginis septi nasi, processus posterior cartilaginis septi nasi.
Synonym: processus sphenoidalis, sphenoid process.
(05 Mar 2000) |
| sphenoid process of septal cartilage |
The tapering extension of the septal cartilage that lies between the perpendicular plate of the ethmoid and the vomer.
Synonym: processus posterior cartilaginis septi nasi, processus sphenoidalis cartilaginis septi nasi, sphenoid process of septal cartilage.
(05 Mar 2000) |
| sphenoid sinus |
One of the paired paranasal sinuses, located in the body of the sphenoid bone and communicating with the highest meatus of the nasal cavity on the same side.
(12 Dec 1998) |
| sphenoid sinusitis |
Inflammation of the sphenoid sinus. This condition usually is accompanied by pansinusitis and may present itself in an acute or chronic form.
(12 Dec 1998) |
| adenoid squamous cell carcinoma |
<tumour> A malignant neoplasm consisting chiefly of glandular epithelium (adenocarcinoma), usually well differentiated, with foci of metaplasia to squamous (or epidermoid) neoplastic cells.
Synonym: adenoid squamous cell carcinoma.
(05 Mar 2000) |
| basal squamous cell carcinoma |
<tumour> A carcinoma of the skin which in structure and behaviour is considered transitional between basal cell and squamous cell carcinoma The term should not be used for the much more common keratotic variety of basal cell carcinoma, in which the tumour cells are of basal type but which contains small foci of abrupt keratinization.
Synonym: basal squamous cell carcinoma.
(05 Mar 2000) |
| carcinoma, squamous cell |
A carcinoma derived from stratified squamous epithelium. It may also occur in sites where glandular or columnar epithelium is normally present.
(12 Dec 1998) |
| multiple self-healing squamous epithelioma |
<tumour> Multiple skin tumours, most frequently on the head, each resembling a well-differentiated squamous carcinoma or keratoacanthoma; individual tumours resolve spontaneously after several months, leaving deep-pitted scars with irregular crenellated borders, and are usually replaced by additional new tumours; autosomal dominant inheritance.
(05 Mar 2000) |
| simple squamous epithelium |
Epithelium composed of a single layer of flattened scalelike cells, such as mesothelium, endothelium, and that in the pulmonary alveoli.
Synonym: pavement epithelium.
(05 Mar 2000) |
| squamous |
Scaly or platelike.
Origin: L. Squamosus = scaly
(18 Nov 1997) |
| squamous alveolar cells |
Highly attentuated squamous cell's that form the gas-permeable epithelium lining the alveoli of the lungs.
Synonym: type I cells.
(05 Mar 2000) |
