anterior aspect of forearm Flashcards
skin sensation innervation anterior aspect of forearm
lateral antebrachial cutaneous n
medial antebrachial cutaneous n
superficial veins of the forearm
cephalic vein
basilic vein
median vein of forearm
general features of muscles of the anterior forearm
flexion of hand and fingers
pronation of forearm
from where do the muscles of forearm originate
common flexor tendon
from medial epicondyle
medial epicondylitis
folfer’s elbow
lateral epicondylitis
tennis elbow
blood supply to the anterior forearm
ulnar and radial arteries
snterior forearm innervated by
median and ulnar nerves
which muscles supplied by ulnar nerve
flexor carpi ulnaries
medial/ulnar half of the the fleor digitorum profundus
pronator teres muscle origin
insertion
action
nerve supply
humeral head epicondyle ;ulnar head coronoid process of ulna
midway lateral surface of radius
pronation and weak flexion of forearm
median nerve
the compression of the median n will causes ?
pronator teres syndrome
symptoms of pronator teres syndrome?
the elbow region proximal part of the forearm
pain numbness sensory loss
motor muscle weakness
flexor carpi radialis muscle o
i
a
n
medial epicondyle of humerus CFT antebrachial fascia
base of 2nd and 3rd of metacarpal bones
flexes and abducts hand at wrist joint
median nerve
palmaris longous O
I
A
N
medial epicondyle of humerus
flexor retinculum and palmar aponeurosis
flexes the wrist and streaches the palmar aponeurosis
median nerve
plays an imprtant role in the grip of the hand
palmar aponeurosis
flexor carpi ulnaris muscle O
I
A
N
Humeral head from medial epicondyle ;ulnar head medial margin of olecranon process and posterior border of the ulna
pisiform bone hook of hamate base of 5th metacarpal bone
flexes and adducts hand at wrist joint
ulnar nerve
intermediate muscle of forearm ?
flexor digitorum superficialis muscle
flexor digitorum superficialis muscle O
I
A
N
Humeral head meial epicondyle medial of coronoid process of ulna ;radial head superior half of anterior surface of shaft of radius
side of the middle phalanx of medial 4 fingers
flexion of metacarpalphalangeal joint
of proximal interphalangeal joint
flexing the heand
median nerve
acts like a pully
increases the efficiency
of FDP muscle
The tendons of FDS
deep group muscles of forearm ant?
flexor digitorum profunds
flexor pollicis longus muscle
pronator quadratus
flexor digitorum profundus O
I
A
N
anterior and medial surface of ulna ;interosseus membrane
base of medial 4 distal phalanx
flexion of
1 distal interphalngeal j
middle and proximal interphalangeal j
metacarpophalangeal j
ulnar medial half
median lateral half
establishing
and maintaining a
strong grip of the
hand
The actions of the
FDP
ulnar nerve injury ?
claw hand
median nerve injury ?
sign of benediction
flexor policis longus musle O
I
A
N
Interosseus membrane, anterior
surface of radius
Base of the distal phalanx of
thumb
Flexion of the distal phalanx of
the thumb at the
interphalangeal (IP) joint
– Flexion of the
metacarpophalangeal (MP)
joint
median nerve
Punching muscles:
Flexor digitorum profundus (FDP) muscle
• Flexor pollicis longus (FPL) muscle
• Pronator quadratus (PQ) muscle
Lateral aspect:
• Thumb and lateral forearm will follow
the cephalic vein and drain into
infraclavicular lymph node
Medial aspect:
• Medial forearm will follow the basilic
vein reach the cubital fossa and drain
into
supratrochlear lymph nodes or directly to the lateral group axillary lymph nodes
Provides sheath and compartments
for muscles
• Provides septa between muscles
• Provides attachments for muscles
function of which hamood?
deep fascia
Run between the deep and
superficial veins, connecting
the two systems
perforating veins
Return the blood from the hand
dorsal and palmar veins of the
hand
Deep veins of the forearm
– Ulnar vein
– Radial vein
– Anterior and posterior
interosseous vein
is formed by paired veins, which
accompany and lie either side of an
small arteries, these are called:
Vena comitans/vanae comitantes;
basilic vein joins ////// to form?
brachial to form axillary
Lateral border of the biceps, in
the deltopectoral groove, and
perforates the clavipectoral
fascia and drain into the
axillary vein
Venipuncture:
median cubital vein
Cephalic vein and basilic vein starts in the
in the dorsal venous network
