| posterior basal segment | Posterior basal segment of inferior lobe of right and left lungs; lies adjacent to vertebral column below superior segment. Synonym: segmentum basale posterius. (05 Mar 2000) |
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| neoplasms, basal cell | Neoplasms composed of cells from the deepest layer of the epidermis. The concept does not refer to neoplasms located in the stratum basale. (12 Dec 1998) |
| nevoid basal cell carcinoma syndrome | <syndrome> An inherited group of defects which involve abnormalities of the skin, eyes, nervous system, endocrine, glands and bones. The condition is characterised by an unusual facial appearance and a predisposition for skin cancer. (27 Sep 1997) |
| superior basal vein | <anatomy, vein> Tributary to the common basal vein draining the lateral and anterior part of the inferior lobe of each lung. Synonym: vena basalis superior. (05 Mar 2000) |
| denture basal surface | That portion of the surface of a denture which has its contour determined by the impression and bears the greater part of the occlusal load. Synonym: denture basal surface. (05 Mar 2000) |
| inferior basal vein | <anatomy, vein> Tributary to the common basal vein draining the medial and posterior part of the inferior lobe in each lung. Synonym: vena basalis inferior. (05 Mar 2000) |
| Eagle's basal medium | A solution of various salts containing 13 naturally occurring amino acids, several vitamins, two antibiotics, and phenol red; used as a tissue culture medium. (05 Mar 2000) |
| Engelmann's basal knobs | An obsolete eponym for blepharoplast. (05 Mar 2000) |
| junctional basal lamina | <cell biology> Specialised region of the extracellular matrix surrounding a muscle cell, at the neuromuscular junction. May be responsible for localisation of acetylcholine receptors in the synaptic region and also binds acetylcholine esterase to this region (18 Nov 1997) |
| lateral basal branch | Lateral basal branch of the following: 1) basal part of inferior lobar branch of right pulmonary artery; 2) basal part of inferior lobar branch of left pulmonary artery. Synonym: ramus basalis lateralis. (05 Mar 2000) |
| lateral basal segment | Lateral basal segment of inferior lobe of right and left lung; between anterior and posterior basal segments. Synonym: segmentum basale laterale. (05 Mar 2000) |
| A layer | <molecular biology> Right handed double helical DNA with approximately 11 residues per turn. Planes of base pairs in the helix are tilted 20 deg away from perpendicular to the axis of the helix. Formed from B DNA by dehydration. (18 Nov 1997) |
| ameloblastic layer | The internal layer of the enamel organ. Synonym: enamel layer. (05 Mar 2000) |
| anterior elastic layer | A transparent homogeneous acellular layer, 6 to 9 um thick, lying between the basal lamina of the outer layer of stratified epithelium and the substantia propria of the cornea; considered to be a basement membrane. Synonym: lamina limitans anterior corneae, anterior elastic layer, Bowman's membrane, lamina elastica anterior, limiting layers of cornea. (05 Mar 2000) |
| anterior layer of rectus abdominis sheath | The portion of the rectus sheath that lies anterior to the muscle, consisting in its upper two-thirds of contributions from the aponeuroses of the external and internal oblique muscles, and in its lower third (below the arcuralt line) of contributions from the aponeuroses of all three muscles of the anterolateral abdominal wall. Synonym: lamina anterior vaginae musculi recti abdominis. (05 Mar 2000) |