biceps
American Heritage Dictionary:
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bi·ceps
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biceps relaxed to extend forearm biceps contracted to raise forearm (Carlyn Iverson) |
n., pl., biceps, or -ceps·es (-sĕp'sĭz).
- A muscle with two heads or points of origin.
- The large muscle at the front of the upper arm that flexes the forearm. Also called biceps brachii.
- The large muscle at the back of the thigh that flexes the knee joint. Also called biceps femoris.
[From Latin, two-headed : bi-, two; see bi-1 + caput, head.]
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biceps
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A two-headed muscle. The term is often used as an abbreviation for biceps brachii.
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One of the muscles for bending the elbow, and therefore a determinant of strength for lifting — the glass to the lips, or loads a great deal heavier. Being a discrete and visible muscle, especially when well-developed, it is often displayed as the epitomy of body-building. It is so-named because it has two ‘heads’; both are attached to the scapula (shoulder blade) above the shoulder joint. Each ‘head’ swells into the dual belly of the muscle; this gathers below into a short tendon spanning the front of the elbow joint to be attached on the upper end of the radius.
— Stuart Judge
A two-headed muscle. See also biceps brachii, biceps femoris.
Columbia Encyclopedia:
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biceps
biceps (bī'sĕps), any muscle having two heads, or fixed ends of attachment, notably the biceps brachii at the front of the upper arm and the biceps femoris in the thigh. Originating in the shoulder area, the heads of the biceps merge partway down the arm to form a rounded mass of tissue linked by a tendon to the radius, the smaller of the two forearm bones. When the biceps contracts, the tendon is pulled toward the heads, thus bending the arm at the elbow. For this reason the biceps is called a flexor. It works in coordination with the triceps brachii, an extensor. The biceps also controls rotation of the forearm to a palm-up position, as in turning a doorknob. The size and solidity of the contracted biceps are a traditional measure of physical strength.
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A muscle having two heads. There is a biceps muscle in both fore- and hindlimbs. See also bicipital.
- b. brachii — is a large fusiform muscle lying on the cranial surface of the humerus. Its function is to flex the elbow and integrate the actions of the shoulder and elbow. A medial displacement of the tendon of origin has been reported in dogs, causing a weight-bearing lameness.
- b. femoris — a large muscle of the caudolateral part of the thigh. Its function is to extend the hindlimb when propelling the body, during rearing or kicking. All of the joints are affected except those of the digit. — Rupture of the muscle causes acute hindlimb lameness in cattle. Resembles an intermittent upward fixation of the patella, with extension of the stifle and hock.
- b. reflex — is elicited in dogs by striking a finger placed on the biceps tendon on the craniomedial aspect of the elbow. An active reflex indicates intact spinal cord segments and nerve roots C6–8 and musculocutaneous nerve. It becomes exaggerated in disease of the upper motor neuron.
- b. tendon ossification — causes lameness in the horse. Is radiographically apparent.
Random House Word Menu:
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categories related to 'biceps'
- Limbs and Extremities - biceps: lateral muscle along inside of upper arm
- Muscles - biceps: muscle at front of upper arm
Translations:
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Biceps
Dansk (Danish)
n. - biceps, overarmsmuskel
Nederlands (Dutch)
biceps, spierkracht
Ελληνική (Greek)
n. pl. - δικέφαλος μυς (κν. ποντίκι) του μπράτσου
Português (Portuguese)
n. pl. - bíceps (m pl) (Anat.)
Svenska (Swedish)
n. pl. - biceps
中文（简体）(Chinese (Simplified))
二头肌, 强健的筋肉
中文（繁體）(Chinese (Traditional))
n. - 二頭肌, 強健的筋肉
العربيه (Arabic)
(الجمع) عضلات الذراع الأعلى
עברית (Hebrew)
n. - שריר הזרוע, קיבורת
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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Oxford Food & Fitness Dictionary
Food and Fitness: A Dictionary of Diet and Exercise. Copyright © 1997, 2003 by Oxford University Press. All rights reserved.
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Oxford Companion to the Body
The Oxford Companion to the Body. Copyright © 2001, 2003 by Oxford University Press. All rights reserved.
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Oxford Dictionary of Sports Science & Medicine
The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved.
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Columbia Encyclopedia
The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2012, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/.
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Saunders Veterinary Dictionary
Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.
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