ulna
Long paired bone forming, with the radius, the skeleton of the forearm and articulating with the humerus and radius at the elbow.
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ulnar artery
Terminal branch of the brachial artery, irrigating mainly the medial and posterior parts of the forearm.
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ulnar extensor muscle of wrist
Muscle connecting the posterior faces of the humerus and ulna to the base of the fifth metacarpal; it allows the hand to fold backward (extension) and to move toward the axis of the body (adduction).
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ulnar flexor muscle of wrist
Muscle having two heads connecting the medial epicondyle of the humerus and the ulna to the pisiform bone; it allows the hand to flex and move toward the axis of the body (adduction).
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ulnar nerve
Nerve arising from the brachial plexus, especially innervating the flexor muscles of the hand and fingers.
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ulnar recurrent artery
Branch of the ulnar artery, irrigating the elbow region inside; it follows an upward course.
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ulnar veins
Veins of the posterior part of the forearm, joining the radial veins at the elbow to form the brachial veins.
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umbilicus
Scar in the form of a rounded depression resulting from the cutting of the umbilical cord.
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upper canine
Canine of the upper dental arch, located between the lateral incisor and first premolar.
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upper central incisor
Incisor located in the front section of the upper dental arch.
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upper first molar
Molar of the upper dental arch, located between the second premolar and second molar.
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upper fisrt premolar
Premolar of the upper dental arch, located between the canine and second premolar.
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upper lateral incisor
Incisor of the upper dental arch, located between the central incisor and canine.
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upper limb
Appendage formed by the arm, forearm and hand, connected to the trunk at the shoulder; it is used mainly for gripping.
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upper lip
Lip forming the upper contour of the mouth.
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upper second molar
Molar of the upper dental arch, located between the first molar and wisdom tooth.
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upper second premolar
Premolar of the upper dental arch, located between the first premolar and first molar.
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upper third molar
Last molar of the upper dental arch.
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ureter
Each of two smooth muscular membranous channels carrying urine from the kidneys to the bladder.
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ureteric orifice
Orifice through which a ureter connects with the bladder.
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urinary bladder
Hollow organ in which the urine produced in the kidneys temporarily collects; it empties through the ureter during urination.
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uterine cavity
Hollow space contained inside the walls of the uterus.
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uterine tube
Each of two tubes culminating in the upper part of the uterus and having fimbriae that sweep the ovaries and collect ova.
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uterus
Hollow female genital organ located between the bladder and rectum, in which the fetus develops during pregnancy.
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uvula of urinary bladder
Small protrusion inside the bladder, near the internal ureteric orifice; it is visible mainly in adult men.
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