Phylogeny

The study of ancestral relations among species, often illustrated with a "tree of life" branching diagram, which is also known as a phylogenetic tree.

phylogeny

Anthropology; Cultural anthropology

The evolutionary history of a species.

phylogeny

Biotechnology; Genetic engineering

A diagram illustrating the deduced evolutionary history of populations of related organisms.

phylogeny

Plants; Botany

The evolutionary development of a plant group, i.e. Its derivation from its ancestors and the relationship among its members. Adj. Phylogenetic.

medial longitudinal fasciculus

Biology; Neuroscience

Axon tract that carries excitatory projections from the abducens nucleus to the contralateral oculomotor nucleus; important in coordinating conjugate eye movements.

commissures

Biology; Neuroscience

Axon tracts that cross the midline of the brain. See also anterior commissure.

postganglionic axons

Biology; Neuroscience

Axons that link visceral motor neurons in autonomic ganglia to their targets.

climbing fibers

Biology; Neuroscience

Axons that originate in the inferior olive, ascend through the inferior cerebellar peduncle, and make terminal arborizations that invest the dendritic tree of Purkinje cells.

saccades

Biology; Neuroscience

Ballistic, conjugate eye movements that change the point of foveal fixation.

olfactory receptor neurons (ORNs)

Biology; Neuroscience

Bipolar neurons in olfactory epithelium that contain receptors for odorants.

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Industry/Domain: Health care Category: Health care regulations

ObamaCare

ObamaCare, formally known as the patient protection and affordable care Act (PPACA), is a United States federal law into law by President Barack Obama ...