Lower limb Flashcards
veins of the forearm:
Basilica
Cephalic
Median cubital
Median antebrachial (hand)
- Brachial
- Basilica
- Cephalic
Most ________ nerves form the brachial plexus
cutaneous
Wrist and hand controlled by
Extensor and flexor muscles of the forearm
Flexors and pronators (palm faces back)
-Lie anteriorly
Median nerve
Exeptions: 1 1/2 supplied by ulnar nerve
Extensors and supinator’s
Lie posteriorly
-Radial nerve
Where are the tendons of flexors located?
On the anterior surface
What holds the anterior compartment (flexors) in place-Anterior surface pf wrist?
Palmar carpal ligament
flexor retinaculum
Flexor (pronator) muscles: 3 layers
- Superficial layer
- Intermediate layer
- Deep layer
attached by common flexor tendon at common flexor attachment
Superficial layer of flexors
Superficial (1st layer) muscles (4)
- Pronator teres
- Flexor carpi radialis
- Palmaris longus
- Flexor carpi ulnaris
Intermediate layer (2nd layer)
Flexor digitorium superficialis
Deep (3rd layer)
- Flexor digitorium profundus
- Flexor pollicis longus
- Pronator quadratus
Flexor carpi radialis
Flexor carpi radialis nerve supply
median nerve
Flexor carpi radialis proximal attachment
Medial epicondyle of the humerus
Flexor carpi radialis distal attachment
Base of second and third metacarpal, anterior (palmar surface)
Flexor carpi radialis actions
- Flexion
- Abduction
Palmaris longus
Palmaris longus proximal attachment
Medial epicondyle of humerus
Palmaris longus distal attachment
Palmaris aponeurosis of second, thrid, fourth and fifth metacarpals
Palmaris longus nerve supply
Median nerve
Palmaris longus action
Flexion
Flexor carpi ulnaris
Flexor carpi ulnaris nerve supply
Ulnar nerve
Flexor carpi ulnaris proximal attachment
Medial epicondyle of humerus, posterior aspect of proximal ulna
Flexor carpi ulnaris distal attachment
pisiform, hamate and base of fifth metacarpal
Flexor carpi ulnaris action
Flexion and adduction
Flexor digitorium superficialis
Flexor digitorium superficialis nerve supply
median nerve
Flexor digitorium superficialis proximal attachment
Medial epicondyle of the humerus.
Ulnar head: medial coronoid process.
Radial head: Upper two thirds of anterior border of radius
Flexor digitorium superficialis distal attachment
Split tendons attach to sides of middle phalanx of four fingers (palmar surface)
Flexor digitorium superficialis action
Flexion of wrist and fingers
Flexor digitorium profundus
Flexor digitorium profundus nerve supply
median (2-3 fingers) and ulnar nerve (4-5 fingers)
Flexor digitorium profundus proximal attachment
Proximal three-fourths of anterior and medial ulna
Flexor digitorium profundus distal attachment
Base of distal phalanxes of the four fingers
Flexor digitorium profundus action
Flexion of wrist and fingers
Flexor pollicis longus
Flexor pollicis longus nerve supply
median nerve
Flexor pollicis longus proximal attachment
middle anterior surface of radius and from the anterior medial border of ulna, just distal to coronoid process
Flexor pollicis longus distal attachment
Base of distal phalanx of thumb (palmar surface)
Flexor pollicis longus actions
flexion
Posterior compartment
extensor muscles
Posterior compartment (extensor muscles) all have the same nerve supply:
Radial nerve
Group 1 : extensor muscles
extend and adduct/abduct the hand at wrist joint
Group 2: extensor muscles
extend the medial 4 fingers
Group 3: extensor muscles
extend or abduct thumb
Some extensor muscles attache to the _______ via the ____________
- lateral epicondyle
- common extensor tendon
Extensors are held in place by
extensor retinaculum
reduce friction on dorsum of wrist
Synovial tendon sheaths
Extensor carpi ulnaris
Extensor carpi ulnaris nerve supply
Radial nerve
Extensor carpi ulnaris proximal attachment
Lateral epicondyle of humerus
Middle two- fourths of the posterior border of the ulna
Extensor carpi ulnaris distal attachment
Base of fifth metacarpal (dorsal surface)
Extensor carpi ulnaris action
extensions
adduction
Extensor carpi radialis brevis
Extensor carpi radialis brevis nerve supply
Radial nerve
Extensor carpi radialis brevis proximal attachment
Lateral epicondyle of humerus
Extensor carpi radialis brevis distal attachment
Base of third metacarpal
Extensor carpi radialis brevis action
Abduction
extension
Extensor carpi radialis longus
Extensor carpi radialis longus nerve supply
Radial nerve
Extensor carpi radialis longus proximal attachment
Lower one-third of the lateral supracondylar ridge of the humerus and lateral epicondyle of the humerus
Extensor carpi radialis longus distal attachment
Base of second metacarpal (dorsal surface)
Extensor carpi radialis longus actions
Abduction
extension
Extensor digitorium
Extensor digitorium nerve supply
radialis nerve
Extensor digitorium proximal attachment
Lateral epicondyle of the humerus
Extensor digitorium distal attachment
Four tendons to bases of middle and distal phalanges of four fingers (dorsal surface)
Extensor digitorium actions
Extension of the wrist
extension of fingers
Extensor indicis
Extensor indicis proximal attachment
Middle to distal one-third of posterior ulna
Extensor indicis nerve supply
radial nerve
Extensor indicis distal attachment
Base of middle and distal phalanxes of second phalange (dorsal surface)
Extensor indicis actions
Extension
Extensor digiti minimi
Extensor digiti minimi nerve supply
radial nerve
Extensor digiti minimi proximal attachment
Lateral epicondyle of humerus
Extensor digiti minimi distal attachment
Base of middle and distal phalanxes of 5th phalange (dorsal surface)
Extensor digiti minimi actions
extension
Extensor pollicis longus
Extensor pollicis longus nerve supply
radial nerve
Extensor pollicis longus proximal attachment
Posterior lateral surface of lower middle ulna
Extensor pollicis longus distal attachment
Base of distal phalanx of thumb (dorsal surface)
Extensor pollicis longus actions
Extension
Extensor pollicis brevis
Extensor pollicis brevis nerve supply
radial nerve
Extensor pollicis brevis proximal attachment
Posterior surface of lower middle radius
Extensor pollicis brevis distal attachment
base of proximal phalanx of thumb (dorsal surface)
Extensor pollicis brevis action
extension
Abductor pollicis longus
Abductor pollicis longus nerve supply
radial nerve
Abductor pollicis longus proximal attachment
posterior aspect of the radius and midshaft of ulna
Abductor pollicis longus distal attachment
Base of first metacarpal (dorsal surface)
Abductor pollicis longus action
Abduction
Fascia of the palm is continuous with:
Antebrachial fascia and fascia of dorsum of hand
Thenar eminence
base of thumb
Hypothenar
Hypothenar
fascia of the palm
Palmar aponeurosis
tubes which enclose synovial sheaths
Fibrous digital sheaths
________ muscles of the hand make up ___ compartments
intrinsic
5
Intrinsic muscles of the hand in 5 compartments:
Thenar compartment Adductor compartment Hypothenar compartment Central compartment Interosseous compartments
thenar muscles
Thenar compartment
hypothenar muscles
Hypothenar compartment
Hypothenar compartment
short muscles –lumbricals
Interosseous compartments
interosseous muscles
What is the posterior border of the anatomical snuffbox?
Extensor pollicus longus
What is the anterior border of the anatomical snuffbox
Extensor pollicis brevis
abductor pollicis longus
Interosseous compartments of the hand:
- 1st-3rd palmar interossi
- Thenar compartment
- Adductor compartment
- Hypothenar compartment
- Central compartment
Thenar compartment
flexor pollicis brevis
abductor pollicis brevis
opponens pollicis
Adductor compartment
adductor pollicis
Hypothenar compartment
- abductor digiti minimi
- opponens digiti minimi
- flexor digiti minimi
Central compartment
lumbricals
tendons of insertion of fingers
Flexor digitorum profundus and superficialis
ligaments on fingers
palmar ligaments
deep transverse metacarpal ligaments
What nerve(s) is at the pink part?
Radial nerve
dorsal digital nerve
what nerve(s) are at the light orange part
Median nerve
palmar branch
what nerve(s) occur at the dark orange part?
Palmar digital nerves
exclusive area of median nerve
what nerve(s) occur at the dark green part
Palmar digital nerve
exclusive area of ulnar nerve
what nerve(s) occur at the light green part?
Ulnar nerve, palmar branch
what nerve(s) occur at the pink area
Radial nerve
superficial branch
dorsal digital nerves
what nerve(s) occur at the first two orange fingers?
Exclusive area of median nerve
what nerve(s) occur at the orange parts
Median nerve
dorsal branches of palmar digital nerves
what nerve(s) occur at the dark green part?
Dorsal digital nerve (exclusive area of ulnar nerve)
what nerve(s) occur at the light green part?
Ulnar nerve, dorsal branch