Upper Limb Flashcards
What are the spinal roots of the Musculocutaneous nerve?
C5-C7
What movements does the Musculocutaneous nerve facilitate?
Elbow flexion and supination
Which muscle is primarily supplied by the Musculocutaneous nerve?
Biceps brachii
What are the spinal roots of the Axillary nerve?
C5, C6
What movement is facilitated by the Axillary nerve?
Shoulder abduction
What are the spinal roots of the Radial nerve?
C5-C8
What functions does the Radial nerve control?
Extension of forearm, wrist, fingers, thumb
What are the spinal roots of the Median nerve?
C6, C8, T1
What is the mnemonic for the muscles innervated by the Median nerve?
LOAF
What are the spinal roots of the Ulnar nerve?
C8, T1
What happens at the wrist in case of a Median nerve lesion?
Paralysis of thenar muscles, opponens pollicis
What happens at the elbow in case of a Median nerve lesion?
Loss of pronation of forearm and weak wrist flexion
What type of hand muscles remain functional despite a Median nerve injury?
Intrinsic hand muscles except LOAF
What is the role of the Long thoracic nerve?
Innervates Serratus anterior
What are the spinal roots of the Long thoracic nerve?
C5-C7
What sensory areas does the Musculocutaneous nerve cover?
Lateral part of the forearm
What sensory area does the Axillary nerve cover?
Inferior region of the deltoid muscle
What sensory area does the Radial nerve cover?
Small area between the dorsal aspect of the 1st and 2nd metacarpals
What sensory area does the Median nerve cover?
Palmar aspect of lateral 3½ fingers
What sensory area does the Ulnar nerve cover?
Medial 1½ fingers
Muscultaneous nerve injury
Usually injured as part of the brachial plexus
What injury can result in a flattened deltoid?
Humeral neck fracture/dislocation
What is the result of a humeral midshaft fracture?
Wrist drop
What condition is associated with wrist lesions?
Carpal tunnel syndrome
What type of fracture may damage the Ulnar nerve, resulting in ‘claw hand’?
Medial epicondyle fracture
What complication may occur during sports or mastectomy related to the Long thoracic nerve?
Winged scapula
