Also known as: hd.
HD has various meanings in the Medicine category. Discover the full forms, definitions, and usage contexts of HD in Medicine.
A specialised structure that attaches an epithelial cell to the basement membrane beneath it.
MedicineHalf of the diaphragm, the muscle that separates the chest cavity from the abdomen and that serves as the main muscle of respiration. Both hemidiaphragms are visible on X-ray studies from the front or back. The right hemidiaphragm is protected by the liver and is stronger than the left. The left hemidiaphragm is more often subject to rupture and hernia than the right. This may also reflect weaknesses at the points of embryologic fusion of the left hemidiaphragm.
MedicineA homeobox is a DNA sequence, around 180 base pairs long, found within genes that are involved in the regulation of patterns of anatomical development (morphogenesis) in animals, fungi and plants. These genes encode homeodomain protein products that are transcription factors sharing a characteristic protein fold structure that binds DNA.
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