Vasculature innervation both muscular and cutaneous Flashcards
What are the major nerve of the palmar hand?
Superficial radial nerve
Median nerve
Ulnar nerve
What type of innervation does the superficial radial nerve supply?
Cutaneous only
crooses snuff box and enters dorsal side of hand on lateral side
What does the superficial radial nerve innervate?
dorsal thumb plus 1.5 digits
does apply to nail beds
What type of innervation is the median nerve?
both motor and sensory
What does the median nerve split?
Common palmar cutaneous nerves before entering carpal tunnel
motor branch enters under the retnaculum. subject to carpal tunnel syndrome
What are the branches of the median nerve?
Common palmar branches nerves
motor recurrent branch
What does the common palmar branch innervate?
palmar thumb and 2.5 digits including nail bed
What is the course of motor recurrent branch?
enters thenar eminence after passing under flexor retinaculum
What does the motor recurrent innervate?
abductor pollicis brevis
flexor pollicis brevis
opponnens pollicis
cutaneous branches supply lumbricals to digits 2&3
What are the branches of the ulnar nerve?
Superfiacial ulnar nerve( sensory)
deep ulnar nerve (motor)
What is the course of ulnar nerve?
crosses wrist under palmar ligament (superficial to flexor retinaculum called the Ulnar canal or guyons canal subject to compression)
splits into superficial and deep branches after passing guyons canal
What does the superficial ulnar nerve innervate?
dorsal and palmar surfaces by separate branches
dorsally - supplies medial 2.5 digits
palmar side - 1.5 digits
may be a plexiform connection with radial nerve
What does the deep ulnar nerve innervate?
all deep hypothenar muscles
lumbricals to digits 4 & 5
all interosseus muscles (dorsal and palmar)
adductor pollicis M
crosses deep to the head of origin of hypothenar muscles into deep arch
