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| a group of cells or organ producing a secretion or selectively removing, altering or concentrating materials from blood for elimination from the body |
| a large, triangular muscle covering the joint of the shoulder, the action of which raises the arm away from the side of the body |
midbrain mid·brain (mĭd'brān')
n.
See mesencephalon.
| midbrain (mĭd'brān') Pronunciation Key
The middle part of the vertebrate brain. In most animals except mammals, the midbrain processes sensory information. In mammals, it serves primarily to connect the forebrain with the hindbrain. Compare forebrain, hindbrain. |