Mindblown: a blog about philosophy.
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Orbital rim
The anterior edge of the bony orbit, or eye socket, formed by the maxilla and zygomatic bone inferiorly and the frontal bone superiorly.
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Hypoechoic rim
In ultrasonography, a thin border (2 mm or less) around a body part that produces few echoes. The rim is sometimes seen around abscesses, other inflamed structures, structures with many blood vessels at their edges, or the normal fetal heart.
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Alar rim
The tissue at the nostrils that constitutes the external nasal valve.
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Rigid spine syndrome
A rare form of muscular dystrophy in which the disease is limited to the paraspinal muscles of the neck and back. Unlike other forms of muscular dystrophy, the weakness and stiffness characteristic of this condition are not progressive.
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Penile rigidity
The ability of the erect penis to resist bending or buckling forces applied to its long axis. The greater its resistance, the more effectively the penis can penetrate during intercourse.
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Lead-pipe rigidity
Increased muscular tone in an extremity in which (as opposed to cogwheel rigidity) the affected muscle does not move in a discontinuous or jerking fashion as it is pulled back and forth.
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Clasp-knife rigidity
A condition in which passive flexion of the joint causes increased resistance of the extensors. This gives way abruptly if the pressure to produce flexion is continued.
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Cerebellar rigidity
Stiffness of the body and extremities resulting from a lesion of the middle lobe of the cerebellum.
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Right-handedness
The condition of greater adeptness in using the right hand. This characteristic is found in about 93% of the population.
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Riga-Fede’s disease
Ulceration of the frenum of the tongue with membrane formation. It occurs after abrasion by the lower central incisors.
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