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Nerve Plexuses (Sacral/Coccygeal Plexus (S2 (Sciatic n (Tibial n (Mixed…

- - - - Somatosensory
        
        Skin of gluteal region, perineum, posterior and medial thigh, popliteal fossa, upper posterior leg
  - - - Mixed
        
        S: skin of penis and scrotum of male; fem clitoris, lamia majora and minora, lower vagina.
        
        M/P: Muscles of perineum
  - - - Tibial n
        
        Mixed
        
        M/P: Hamstring muscles, posterior muscles of leg, most intrinsic foot muscles.
        
        S: skin of posterior leg, plantar skin, knee and foot joints
      - Fibular n
        
        Mixed
        
        S: Skin of anterior distal third of leg, dorsum of foot, toes I-II; knee joint
        
        M/P: Biceps femoris muscle, anterior and lateral muscles of leg, extensor digitorium brevis muscle of foot.
  - - - Mixed
        
        M/P: gluteus maximus muscle
  - - - Mixed
        
        S: Hip joint
        
        M/P: gluteous minimus, medius, and tensor fasciae latae muscles
- - - - Somatosensory
        
        Ext. ear, mastoid region, parotid salivary gland region, slightly inferior to angle of mandible.
    - - Somatosensory
        
        Anterior and lateral neck, underside of chin.
    - - Motor
        
        Omohyoid, sternohyoid and sternothyroid muscles.
  - - - Somatosensory
        
        Lower anterior and lateral neck, shoulder, anterior chest.
  - - - Somatosensory
        
        Upper third of medial surface of external ear, skin posterior to ear, posterolateral neck.
  - - - Mixed
        
        Diaphragm, pleura, pericardium.
- - - - Musculocutaneous n
        
        Mixed
        
        Lateral
        
        S: Skin of anterolateral forearm, elbow.
        
        M/P: Brachialis, biceps brachii, coracobrachialis muscles
  - - - Axillary n
        
        Mixed
        
        Posterior
        
        M/P: Deltoid and teres minor muscles.
        
        S: skin of lateral shoulder and arm, shoulder joint
        
        Radial n
        
        Mixed
        
        Posterior
        
        S: skin of posterior arm, posterior and lateral forearm and wrist, joints of elbow wrist, and hand.
        
        M/P: Extensor muscles of posterior arm and forearm.
      - Median n
        
        Mixed
        
        Lateral and medial
        
        S: Skin of lateral 2/3 of hand, tips of digits I-IV, joints of hand.
        
        M: Forearm flexors, thenar group, lumbricals I-II of hand.
        
        Ulnar n
        
        Mixed
        
        Medial
        
        S: Skin of palmar and medial hand, digits III-V, joints of elbow and hand.
        
        M/P: Some forearm flexors, adductor pollicis, hypothenar group, inter-osseous muscles, lumbricals III-V.
- - - - Mixed
        
        S: Skin of medial thigh; hip and knee joints
        
        Obturator externus; medial thigh muscles
    - - Somatosensory
        
        Skin of anterior and upper lateral tigh
  - - - Mixed
        
        S: Skin of anterior, medial, and lateral thigh and knee; skin of medial leg and foot; hip and knee joints
        
        M/P: Iliacus, pectinus, quadriceps femoris, and sartorius muscles.
  - - - Mixed
        
        S: skin of upper medial thigh; male scrotum and root of penis; fem labia majora.
        
        M/P: Internal abdominal oblique
    - - Mixed
        
        S: skin of middle anterior thigh; male scrotum; fem labia majora.
        
        M/P: Male cremaster muscle
    - - Mixed
        
        S: Skin of lower anterior abdominal and posterolateral gluteal regions.
        
        M/P: Internal and external abdominal oblique and transverse abdominal muscles.