Band

band (band)

1. a part, structure, or appliance that binds; for anatomical structures, see frenulum, tenia, trabecula, and vinculum.

2. in dentistry, a thin metal strip fitted around a tooth or its roots.

3. in histology, a zone of a myofibril of striated muscle.

4. in cytogenetics, a segment of a chromosome stained brighter or darker than the adjacent bands; used in identifying the chromosomes and in determining the exact extent of chromosomal abnormalities. Called Q-b's, G-b's, C-b's, T-b's, etc., according to the staining method used.

---

A band  the dark-staining zone of a sarcomere, whose center is traversed by the H band.

band of Broca  a band of nerve fibers that forms the caudal zone of the anterior perforated substance where it adjoins the optic tract.

H band  a pale zone sometimes seen traversing the center of the A band of a striated myofibril.

I band  the band within a striated myofibril, seen as a light region under the light microscope and as a dark region under polarized light.

iliotibial band  see under tract.

M band  the narrow dark band in the center of the H band.

matrix band  a thin piece of metal fitted around a tooth to supply a missing wall of a multisurface cavity to allow adequate condensation of amalgam into the cavity.

oligoclonal bands  discrete bands of immunoglobulins with decreased electrophoretic mobility whose presence in the cerebrospinal fluid may be indicative of multiple sclerosis or other disease of the central nervous system.

Z band  a thin membrane in a myofibril, seen on longitudinal section as a dark line in the center of the I band; the distance between Z bands delimits the sarcomeres of striated muscle.

---

band (bnd)

n.

1. An appliance or a part of an apparatus that encircles or binds a part of the body.

2. A cordlike tissue that connects or that holds bodily structures together.

3. A chromatically, structurally, or functionally differentiated strip or stripe in or on an organism.

---

Band

Immature neutrophil.

Mentioned in: White Blood Cell Count and Differential

---

band,

n 1. a cord, tie, chain, or metal collar by which something is bound.
n 2. a contrasting strip or strip of material running through or along the edge of a material.

band adapter,

n See adapter, band.

band, adjustable orthodontic,

n a band provided with an adjusting screw to permit alteration in size.

band, apron,

n See apron band.

band, orthodontic,

n a thin metal ring, usually stainless steel, that secures orthodontic attachments to a tooth. The band, with orthodontic attachments welded or soldered to it, is closely adapted to fit the contours of the tooth and then is cemented into place.

band, pusher,

n an instrument used to adapt the metal band to the tooth.

band remover,

n an instrument used to remove bands from the teeth.

band, rubber,

n See elastic.

band, slip,

n a band formed when a metal is placed under a load and one grain tends to slip or slide on another.

band, striated

n See muscle, striations.

---

band

1. a part, structure or appliance that binds.

2. in histology, a zone of a myofibril of striated muscle.

3. in cytogenetics, a segment of a chromosome stained brighter or darker than the adjacent bands; used in identifying the chromosomes and in determining the exact extent of chromosomal abnormalities. Called Q-bands, G-bands, C-bands, T-bands, etc., according to the staining method used.

3. an American term for a group of range sheep, usually about 1,000, that is ranged by a single herder.

---

band form

an immature polymorphonuclear leukocyte. See also shift to the left.