Posterior in Biological Definition

Morphogenesis

... genes that are important in the formation of more posterior abdominal segments of the Drosophila embryo. ... the egg cytoskeleton but they concentrate at the posterior ends of the eggs. Hunchback and caudal mRNAs ... of the egg. Nanos protein forms a gradient at the posterior end. The Bicoid protein blocks translation of ...

Lung

... In addition to the lungs themselves, birds have posterior and anterior air sacs (typically nine) which ... inhales, air flows in through the trachea to the posterior air sacs, while air currently within the lungs ... exhales, the fresh air now contained within the posterior air sacs is driven into the lungs, and the stale ...

Morphogenesis

... genes that are important in the formation of more posterior abdominal segments of the Drosophila embryo. ... the egg cytoskeleton but they concentrate at the posterior ends of the eggs. Hunchback and caudal mRNAs ... of the egg. Nanos protein forms a gradient at the posterior end. The Bicoid protein blocks translation of ...

Vestibular system

... to each other, and are called horizontal , anterior , and posterior canal. (Alternatively, they may be referred to as lateral , superior , ... have slipped into one of the semicircular canals. In most cases it is the posterior canal that is affected. In certain head positions, these particles push on ...

Eye

... (or body) Cornea Conjunctiva Choroid Fovea Iris Lens Macula Optic disc Optic nerve Ora serrata posterior chamber Pupil Rectus medialis Retina Sclera Suspensory ligament Tapetum lucidum (not in humans) Vitreous humour ...

Fungus

... primary means of classifying fungi, but are now classified with their ancestral group. Except among the chytrids, where spores are propelled by a posterior flagellum , all fungal spores are non-motile. They develop into new mycelia, which invade some substrate and repeat the life cycle. These may become ...

Kidney

... 5 Medical terminology 6 See also Basic anatomy Location In humans the kidneys are two organs located in the posterior part of the abdomen . There is one on each side of the spine just below the liver and spleen . Superior to each kidney is an adrenal gland ...

Nephron

... duct. But in reality, the amount of water reabsorbed is dependent on the permeability of the walls of the duct, regulated by ADH secreted by the posterior part of the pituitary gland . The more ADH, the more permeable the ducts, the more water reabsorbed; the less ADH, the less permeable the ducts, ...