What does myotome mean in medical terms?
A myotome describes a group of muscles served by a single spinal nerve root.
What is the function of myotomes?
Myotomes: A Global Nerve-Muscle Perspective
| Spinal Level (Nerve) | Action |
|---|---|
| C6 | Elbow Flexion; Wrist Extension |
| C7 | Elbow Extension; Wrist Flexion |
| C8 | Thumb extension; Ulnar Deviation |
| T1 | Finger abduction |
What’s the difference between myotomes and Dermatomes?
What are Myotomes and Dermatomes? A group of muscles that is innervated by the motor fibers that stem from a specific nerve root is called a myotome. An area of the skin that is innervated by the sensory fibers that stem from a specific nerve root is called a dermatome.
What is myotome in biology?
A myotome is the group of muscles that a single spinal nerve innervates. Similarly a dermatome is an area of skin that a single nerve innervates. In vertebrate embryonic development, a myotome is the part of a somite that develops into muscle.
What is the nature of myotomes?
In summary, a myotome is a group of muscles innervated by a single spinal nerve. This innervation allows the muscles to perform a variety of motions, such as flexion (angle decrease), extension(angle increase), abduction (movement away from the midline) and adduction (movement toward the midline).
Where do you find myotome muscle?
List of myotomes
- C1/C2: neck flexion/extension.
- C3: Lateral Neck Flexion.
- C4: shoulder elevation.
- C5: Shoulder abduction.
- C6: Elbow flexion/Wrist Extension.
- C7: Elbow extension/Wrist flexion.
- C8: Thumb extension.
- T1: Finger Abduction & Adduction.
Are myotomes sensory or motor?
Both dermatome and myotome are two types of anatomical structures innervated by a single spinal nerve. Both dermatome and myotome are innervated by sensory, motor, and autonomic nerve impulses.
How do I remember the branches of the brachial plexus?
Mnemonic
- M: musculocutaneous nerve.
- A: axillary nerve.
- M: median nerve.
- R: radial nerve.
- U: ulnar nerve.