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Biology

A natural science concerned with the study of life or living matter in all its forms and phenomena, especially in relation to their origin, growth, reproduction, structure, behaviour and evolution.

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Biology > Anatomy

medial

Biology; Anatomy

In the direction of, or closer to, a midline bisecting the animal. For example, the pelvis is medial of the hindleg.

metacarpus

Biology; Anatomy

The section of the forefoot between the phalanges and the carpus; in humans, the long bones of the hand.

metatarsus

Biology; Anatomy

The section of the hindfoot between the phalanges and the tarsus; in humans, the long bones of the foot.

naris

Biology; Anatomy

In paleontology, the external opening of the nasal cavity; in other disciplines, the soft-tissue structure around the external opening of the nasal cavity (i.e. in humans, the ...

neural arch

Biology; Anatomy

The opening in a vertebra through which the spinal cord passes.

neural spine

Biology; Anatomy

The large "spike" of bone that rises above the top of a vertebra to which the muscles and tendons for raising the neck attach.

obturator prong

Biology; Anatomy

Describes the flange of bone connecting the ischium to the pubis in Predentatans. Thyreophoroids (armored dinosaurs) lacked this prong.