Extensor Muscle (Noun)
Meaning
A skeletal muscle whose contraction extends or stretches a body part.
Classification
Nouns denoting body parts.
Examples
- The quadriceps is an extensor muscle that straightens the knee joint when it contracts.
- The triceps brachii is an extensor muscle that extends the elbow joint, straightening the arm.
- The gastrocnemius muscle is an extensor muscle that helps to extend the foot and ankle.
- The extensor muscle in the back of the thigh, the quadriceps femoris, helps to straighten the knee.
- The extensor carpi radialis brevis is an extensor muscle that helps to extend the wrist and forearm.