| 释义 |
Definition of extensor in English: extensor(also extensor muscle) noun ɪkˈstɛnsəɛkˈstɛnsə Anatomy A muscle whose contraction extends or straightens a limb or other part of the body. 〔剖〕伸肌。常与FLEXOR 相对 Often contrasted with flexor Example sentencesExamples - Then, when you've completed the movement, the flexor relaxes and the extensor contracts to extend or straighten the limb at the same joint.
- To offset well-established volume/area relationships limiting muscle force, larger animals walk on extended limbs and show allometric increases in extensor muscle lever arm lengths.
- The limb is supplied with a single extensor muscle and a single flexor, all other joints are considered rigid, and the objective of the CNS is to maintain the position of the limb.
- The anterior compartment flexor muscles of the arm are innervated by the musculocutaneous nerve, and the large posterior compartment extensor muscle is innervated by the radial nerve.
- Flexion force applied against long finger (third digit) extension distal to the proximal interphalangeal joint may provoke pain over the extensor muscle mass in the proximal forearm.
OriginEarly 18th century: from late Latin, from extens- 'stretched out', from the verb extendere (see extend). Definition of extensor in US English: extensor(also extensor muscle) noun Anatomy A muscle whose contraction extends or straightens a limb or other part of the body. 〔剖〕伸肌。常与FLEXOR 相对 Often contrasted with flexor Example sentencesExamples - Flexion force applied against long finger (third digit) extension distal to the proximal interphalangeal joint may provoke pain over the extensor muscle mass in the proximal forearm.
- Then, when you've completed the movement, the flexor relaxes and the extensor contracts to extend or straighten the limb at the same joint.
- To offset well-established volume/area relationships limiting muscle force, larger animals walk on extended limbs and show allometric increases in extensor muscle lever arm lengths.
- The anterior compartment flexor muscles of the arm are innervated by the musculocutaneous nerve, and the large posterior compartment extensor muscle is innervated by the radial nerve.
- The limb is supplied with a single extensor muscle and a single flexor, all other joints are considered rigid, and the objective of the CNS is to maintain the position of the limb.
OriginEarly 18th century: from late Latin, from extens- ‘stretched out’, from the verb extendere (see extend). |