Anterior Superficial Muscles

• Pronator Teres - Description & Location

  2-headed muscle

  seen in superficial view between proximal margins of brachioradialis + flexor carpi radialis

  
• Pronator Teres - Origin & Insertion

  origin - medial epicondyle of humerus + coronoid process of ulna

  insertion - by common rendon into lateral radius, midshaft
• Pronator Teres - Action

  pronates forearm

  weak flexor of forearm
• Flexor Carpi Radialis - Description & Location

  runs diagonally across forearm

  midway, its fleshy belly is replaced by a flat tendon that becomes cordlike at the wrist

  
• Flexor Carpi Radialis - Action

  powerful flexor of hand

  abducts hand

  weak synergist of forearm flexion
• Palmaris Longus - Description, Origin & Insertion

  small fleshy muscle w a long insertion tendon

  origin - medial epicondyle of humerus

  insertion - fascia of plam
• Palmaris Longus - Action

  tenses skin + fascia of plam during hand movements

  weak hand flexor

  weak synergist for forearm flexion

  
• Flexor Carpi Ulnaris - Description, Location & Action

  most medial muscle of this group

  2-headed

  powerful flexor + abductor of hand in synergy w extenspr carpi ulnaris (posterior muscle)

  stabilises wrist during finger extension

  
• Flexor Digitorum Superficialis - Description

  2-headed muscle

  more deeply placed, therefore actually forms an intermediate layer

  overlain by muscles above but visible at distal end of forearm

  
• Flexro Digitorum Superficialis - Action

  flexes hand + middle phalanges of 2nd-5th fingers

  the important finger flexor for speed + flexion against resitance