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Biceps reflex is a deep tendon reflex (DTR) test (also known as a muscle-stretch reflex test)[1] that examines the function of the C5 reflex arc and the C6 reflex arc.[2] The test is performed by using a tendon hammer to quickly depress the biceps brachii tendon[3] as it passes through the cubital fossa. Specifically, the test activates the stretch receptors inside the biceps brachii muscle which communicates mainly with the C5 spinal nerve and partially with the C6 spinal nerve to induce a reflex contraction of the biceps muscle and jerk of the forearm.[4][5]
A strong contraction indicates a "brisk" reflex, and a weak or absent reflex is known as "diminished". Brisk or absent reflexes are used as clues to the location of neurological disease.[6] Typically, brisk reflexes are found in lesions of upper motor neurons, and absent or reduced reflexes are found in lower motor neuron lesions.[5]
A change in the biceps reflex indicates pathology at the level of musculocutaneous nerve, segment C5/6 or at some point above it in the spinal cord or brain.
^Professional Guide to Assessment. Lippincott Williams & Wilkins. 2006. ISBN 978-1-58255-403-7.
^William J. Weiner (30 July 2010). Neurology for the Non-Neurologist. Lippincott Williams & Wilkins. pp. 499–. ISBN 978-1-60547-239-3. Retrieved 4 July 2011.
^Jane M. Orient (2009). Sapira's Art and Science of Bedside Diagnosis. Lippincott Williams & Wilkins. pp. 570–. ISBN 978-1-60547-411-3. Retrieved 4 July 2011.
^Allen, Connie; Harper, Valerie (2011). Laboratory manual for anatomy and physiology (4 ed.). Hoboken, N.J: Wiley. p. 291. ISBN 978-0-470-59890-0.
^ abMagee, David J. (2008). Orthopedic physical assessment (5 ed.). Philadelphia, Pa. London: Saunders. p. 180. ISBN 978-0-7216-0571-5.
^Weber, Janet; Kelley, Jane (2010). Health Assessment in Nursing. Wolters Kluwer Health / Lippincott Williams & Wilkins. p. 588. ISBN 9780781781602.
Bicepsreflex is a deep tendon reflex (DTR) test (also known as a muscle-stretch reflex test) that examines the function of the C5 reflex arc and the...
one. A stretch reflex is the contraction of a muscle in response to its lengthwise stretch. Bicepsreflex (C5, C6) Brachioradialis reflex (C5, C6, C7) Extensor...
of the startle response is a startle reflex reaction. The startle reflex is a brainstem reflectory reaction (reflex) that serves to protect vulnerable parts...
Bezold-Jarisch reflex — involves a variety of cardiovascular and neurological processes which cause hypopnea and bradycardia. Bicepsreflex — a jerking of...
Tendon reflex (or T-reflex) may refer to: The stretch reflex or muscle stretch reflex (MSR), when the stretch is created by a blow upon a muscle tendon...
withdrawal reflex in the leg can be examined and measured, using an electromyogram to monitor the muscle activity in the upper leg (biceps femoris) while...
quickly to obstacles or unexpected perturbations or disturbances. The reflex pathway (reflex arc) is a sequence of neurons connecting the sensory input (afferent...
motion). Ankle (medial gastrocnemius) Patella (knee cap) Triceps surae Biceps brachii Clonus is typically seen in people with cerebral palsy, stroke,...
of the scapula, and the triceps brachii. Movement of biceps and triceps when arm is flexing Biceps Casadei, Kyle; Kiel, John; Freidl, Michael (2020). "Triceps...
level will affect the function of the triceps (elbow extension) but the biceps (elbow flexion) will be spared; in this case, an injury at the C6 root level...
the human arm, the triceps acts to extend the lower arm outward while the biceps acts to flex the lower arm inward. To reach optimum efficiency, contraction...
corkscrew: first biceps unscrews the cork (supination), then it pulls the cork out (flexion). Biceps brachii – The biceps, also biceps brachii (Latin for...
synchrony for smooth movement. When a muscle spindle is stretched, the stretch reflex is activated, and the opposing muscle group must be inhibited to prevent...
(XI), hearing (VII, VIII), taste (VII, IX, X), pharyngeal movement and reflex (IX, X), tongue movements (XII). These are tested by their individual purposes...
contain α-MNs that innervate muscles higher on the body. For example, the biceps brachii muscle, a muscle of the arm, is innervated by α-MNs in spinal cord...
diminutive of mus meaning mouse, because the appearance of the flexed biceps resembles the back of a mouse. The same phenomenon occurred in Greek, in...
parasympathetic stimulation. There is a similar reflex, called the atrial reflex or Bainbridge reflex, associated with varying rates of blood flow to...
cortex. It is also a center for coordinating many reflexes and contains reflex arcs that can independently control reflexes. It is also the location of...
concentric contraction of the biceps would cause the arm to bend at the elbow as the hand moved from the leg to the shoulder (a biceps curl). A concentric contraction...
After the fight, Wilder stated he had broken his right hand and torn his biceps during the fight. Wilder was ahead 80–71, 80–71, and 79–72 on the scorecards...
development of the step cycle of the left limb in walking motion. Reflex response (e.g. biceps contracts and triceps relaxes to bend the elbow) is also incorporated...
EMG activity in various lower extremity muscles such as rectus femoris, biceps femoris, medial gastrocnemius, and tibialis anterior. Especially when running...
this is the presence of electrophysiology testing abnormalities (delayed H reflex) of the sciatic nerve during the FAIR test, as well as the improvement of...
musculature is observed when examined from behind, due to wasting of the biceps, triceps and forearm muscles. This gives a visual resemblance of the shanks...
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