| knee jerk | The reflex tested by tapping just below the bent knee on the patellar tendon to cause the quadriceps muscle to contract and bring the lower leg forward. It has given rise to the saying: a knee-jerk reaction. Also known medically as the patellar reflex. (12 Dec 1998) |
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| knee-jerk reflex | A sudden contraction of the anterior muscles of the thigh, caused by a smart tap on the patellar tendon while the leg hangs loosely at a right angle with the thigh. Synonym: knee jerk, knee phenomenon, knee reflex, knee-jerk reflex, patellar tendon reflex, quadriceps reflex. (05 Mar 2000) |
| paradoxical triceps reflex | Flexion of the forearm caused by tapping the olecranon. Synonym: paradoxical triceps reflex. (05 Mar 2000) |
| musculus triceps brachii | <anatomy, muscle> Origin, long or scapular head: lateral border of scapula below glenoid fossa, lateral head: lateral and posterior surface of humerus below greater tubercle, medial head: posterior surface of humerus below radial groove; insertion, olecranon of ulna; action, extends elbow; nerve supply, radial. Synonym: musculus triceps brachii, triceps muscle of arm. (05 Mar 2000) |
| musculus triceps coxae | <anatomy> The obturator internus and superior and inferior gemellus muscles considered as one muscle, inserting via a single tendon into the greater trochanter of the femur. Synonym: musculus triceps coxae, triceps muscle of hip. (05 Mar 2000) |
| triceps brachii | <anatomy, muscle> Origin, long or scapular head: lateral border of scapula below glenoid fossa, lateral head: lateral and posterior surface of humerus below greater tubercle, medial head: posterior surface of humerus below radial groove; insertion, olecranon of ulna; action, extends elbow; nerve supply, radial. Synonym: musculus triceps brachii, triceps muscle of arm. (05 Mar 2000) |
| triceps bursa | <anatomy> The bursa located deep to the tendon of the triceps brachii near its insertion on the olecranon. Synonym: bursa subtendinea musculi tricipitus brachii. (05 Mar 2000) |
| triceps coxae muscle | <anatomy> The obturator internus and superior and inferior gemellus muscles considered as one muscle, inserting via a single tendon into the greater trochanter of the femur. Synonym: musculus triceps coxae, triceps muscle of hip. (05 Mar 2000) |
| triceps muscle of arm | <anatomy, muscle> Origin, long or scapular head: lateral border of scapula below glenoid fossa, lateral head: lateral and posterior surface of humerus below greater tubercle, medial head: posterior surface of humerus below radial groove; insertion, olecranon of ulna; action, extends elbow; nerve supply, radial. Synonym: musculus triceps brachii, triceps muscle of arm. (05 Mar 2000) |
| triceps muscle of calf | <anatomy> The two bellies of the gastrocnemius and soleus considered as one muscle. Synonym: musculus triceps surae, triceps muscle of calf. (05 Mar 2000) |
| triceps muscle of hip | <anatomy> The obturator internus and superior and inferior gemellus muscles considered as one muscle, inserting via a single tendon into the greater trochanter of the femur. Synonym: musculus triceps coxae, triceps muscle of hip. (05 Mar 2000) |
| triceps reflex | A sudden contraction of the triceps muscle caused by a smart tap on its tendon when the forearm hangs loosely at a right angle with the arm. Synonym: elbow jerk, elbow reflex. (05 Mar 2000) |
| long head of triceps | <anatomy, muscle> Origin, infraglenoid tuberosity of scapula; insertion, posterior and upper olecranon and fascia of the forearm; action, extends and adducts arm. (06 Mar 2000) |