What does MARMU mean in UNCLASSIFIED
MARMU is a medical acronym that represents the five major peripheral nerves of the arm:
MARMU meaning in Unclassified in Miscellaneous
MARMU mostly used in an acronym Unclassified in Category Miscellaneous that means Musculotaneous Axillary Radial Median Ulnar
Shorthand: MARMU,
Full Form: Musculotaneous Axillary Radial Median Ulnar
For more information of "Musculotaneous Axillary Radial Median Ulnar", see the section below.
- Musculocutaneous (MC)
- Axillary (Ax)
- Radial (R)
- Median (M)
- Ulnar (U)
These nerves originate from the brachial plexus in the neck and travel through the arm to innervate the muscles, skin, and joints.
MARMU Nerves
1. Musculocutaneous (MC) Nerve:
- Innervates the anterior muscles of the arm, including the biceps and brachialis.
- Responsible for elbow flexion and forearm supination.
2. Axillary (Ax) Nerve:
- Innervates the deltoid muscle, which abducts (lifts) the arm.
- Also provides sensation to the skin over the shoulder.
3. Radial (R) Nerve:
- Innervates the extensor muscles of the forearm and hand.
- Enables wrist and finger extension, as well as forearm pronation.
4. Median (M) Nerve:
- Innervates the flexor muscles of the forearm and hand.
- Controls wrist and finger flexion, as well as thumb opposition (touching the thumb to other fingers).
5. Ulnar (U) Nerve:
- Innervates the flexor muscles of the wrist and the intrinsic muscles of the hand.
- Enables wrist flexion and finger adduction (bringing fingers together).
Functions of MARMU Nerves
- Motor: Control muscle movement in the arm and hand.
- Sensory: Transmit sensation from the skin over the arm and hand.
- Autonomic: Regulate blood flow and sweat production.
Clinical Significance
Damage to any of the MARMU nerves can result in weakness, numbness, or pain in the corresponding region of the arm or hand. Conditions that affect these nerves include:
- Brachial plexus injuries
- Carpal tunnel syndrome
- Guillain-Barré syndrome
Essential Questions and Answers on Musculotaneous Axillary Radial Median Ulnar in "MISCELLANEOUS»UNFILED"
What is MARMU?
MARMU is an acronym used in medicine to refer to the five main nerves that innervate the upper limb: Musculocutaneous, Axillary, Radial, Median, and Ulnar. These nerves provide motor and sensory function to the muscles, skin, and joints of the arm, forearm, and hand.
What is the function of the Musculocutaneous nerve?
The Musculocutaneous nerve supplies motor innervation to the brachialis muscle, which is responsible for flexing the elbow joint. It also provides sensory innervation to the lateral forearm skin.
What is the function of the Axillary nerve?
The Axillary nerve provides motor innervation to the deltoid muscle and the teres minor muscle, which are responsible for abducting (lifting to the side) and externally rotating the shoulder joint, respectively.
What is the function of the Radial nerve?
The Radial nerve innervates the muscles of the extensor compartment of the forearm, allowing for extension and supination (turning the palm upward) of the forearm and wrist. It also provides sensory innervation to the skin of the posterior forearm and hand.
What is the function of the Median nerve?
The Median nerve controls the muscles of the anterior compartment of the forearm, enabling flexion of the wrist joint and pronation (turning the palm downward). It provides sensory innervation to the palmar surface of the hand, including the thumb, index, middle, and ring fingers.
What is the function of the Ulnar nerve?
The Ulnar nerve supplies motor innervation to the muscles of the ulnar side of the forearm and hand, allowing for flexion and adduction (bringing towards the midline) of the wrist and fingers. It also provides sensory innervation to the ulnar side of the hand, including the little finger and half of the ring finger.
Final Words: The MARMU acronym serves as a convenient way to remember the five major peripheral nerves of the arm and their functions. Understanding the role of these nerves is crucial for diagnosing and managing disorders that affect the arm and hand.