Maxillary N (Sensory) Exits foramen rotundumSuperficial Neck: cross sternocleidomastoid m sup to inf (off C2-C3): Lesser Occipital N, Greater Auricular N, Transverse Cervical NAuscultation-Rhomboid major, trap, latissiumus dorsiTHERE ARE 11 INTERCOSTAL NERVES: THE 12TH IS SUBCOSTAL NERVEBiol 2255 1st EditionFinal Exam Study GuideAbductor digiti minimi-Abducts 5th finger Ulnar N (O)Pisiform bone & tendon of flexor carpii ulanris (I)Medial side- base- proximal phalynxAbductor Hallucis-Abducts/assists flexion at the metotarsophalangeal joint Medial plantar N (O)Tuberosity of Calcaneous, flexor retinaculum and plantar aponeurosis (I) Medial side of base of proximal phalanx- big toeAbductor Pollicis Brevis: abd/assists opposition of thumb, median N (C8-T1)Abductor Pollicis Longus: abd/ext. thumb & abd. wrist, post. Interosseus radial N (C6-8) Adductor Brevis: add. Thigh & medial rotation, obturator NAdductor Hallucis: add big toe, lat plantar N (S1,2) Adductor Longus- Adducts and flexes thigh, med rotation Obturator N (O) anterior body of pubis(I) medial 1/3 of medial lip of linea aspera of femurAdductor Magnus: add/ext/flexion thigh, obturator/sciatic NN (L2-4) Adductor Pollicis: add/flex thumb, ulnar N (C8-T1) Anconeus: ext. forearm/stabilize elbow, radial N (C6-8) Artenoideus: close laryngeal aditus by approximating arytenoid cartilages, laryngeal branch of vagus NAnterior Scalene: bend the C portion of the vert column forward & lat. Assists in elevation og the first rib, ventral rami of C4-C6Anterior Tibials: dorsiflex ankle, deep fibular N (L4-S1)Biceps Brachii (long)- Flexes/supinates forearm- flexes humerus Musculocutaneous N (O) Supraglenoid tubercle of scap. (I) Radial tuberosity and into aponeurosis of flexor mm of lower armBiceps Femoris- flex/lat rotate knee, ext thigh, tibial/fibular sciatic NN (L5-S2) Brachialis- Flexes elbow Musculocutaneous and Radial N (O) Distal ½ ant surface humerus (I) Coronoid process/ tuberosity of elbowBrachioradialis- Flexes Elbow/Pronation/Supination of forearm to mid position Radial N (O)Prox 2/3 of lat supracondylar ridge of humerus (I) Lat side of base of styloid process of radiusBuccinator: draws corner of mouth laterally, compresses cheek, lower buccal branches of facial NCoracobrachialis- Flexion/Adduction of humerus Musculocutaneous N (O) Tip of coracoid of scapula (I) Anteromedial surface of middle of humerus shaft opposite to deltoid tuberosityCoccygeus: supports viscera, closes pelvic outlet, S4-S5 (O) ischial spine & sacrospinous lig, (I) coccyx & lower sacrum Corrugator Supercilii: draws eyebrows medially and inferiorly, temporal branch of facial NCricoarytenoideus- Stretches and tenses (ADDUCTS) the vocal cords Laryngeal branch of vagus (O) Anterolateral part if cricoids cartilage (I) Inf margin and inf horn of thyroid cartilageCricothyroid: stretches and tenses vocal cords, laryngeal branch of vagus NDeltoid- Abduct/Med rotate/Lat rotate/Flexion/Extends arm Axillary N (O) Sup surface of lat 1/3of clavicle, lat border of acromion process, lower border of crest/spine of scapula (I) deltoid tuberosity of humerusDepressor Anguli Oris: draws angle of mouth downward and laterally, mandibular branch of facial Depressor Labii inferioris: draws lower lip inferiorly and laterally during mastication, mandibular branch of facial N Diaphragm: flattens to increase height of thorax , phrenic N, (O) L1-3, lower 6 costal cart, xiphoid process & sternum, (I)form central tendonDigastric:raise, steady thyroid bone, help open mouth and depress mandib, mandib. branch of trigeminal, cervical branch of facialExtensor Carpi Radialis Brevis- ext. wrist & assists abd. of hand, radial N (C6-7) Extensor Carpi Radialis Longus- ext. wrist & abd. hand, radial N (C6-7) Extensor Carpi Ulnaris- ext. wrist & assists add. of hand, interosseus radial N (C6-8)Extensor Digiti Minimi- ext. 5th digit, radial N (C6-8) Extensor Digitorum- ext. fingers & wrist, deep radial N (C6-8)Extensor Digitorum Brevis- extend 4 digits, deep fibular N (L5-S2) Extensor Digitorum Longus- ext phalanges, deep fibular N (L4-S1)Extensor Hallucis Brevis- ext metatarsalphalangeal joints, deep fibular N (L5-S2) Extensor Hallucis Longus- ext/dorsiflex big toe, deep fibular N (L4-S1) Extensor Indicis: ext. index finger @ metacarpalphalanx joint, post. interosseus radial N (C6-8) External Oblique- Compress abdominal cavity/ lat flexes/ rotates vc/ both flex ant, Ventral rami of T7-T12 (O) external surface of lower 8 ribs (I) ant part of iliac crest and by abdominal aponeurosis to linea albaExtensor Pollicis Brevis- ext. thumb & abd. hand, radial N (C6-7) Extensor Pollicis Longus- ext. interphalangeal joints & assists ext. of metacarpophalangeal joints in thumb, also assists abd. & ext. of wrist & lat. thumb rotation, post. interosseus radial N (C6-8)Flexor Carpi Radialis- flex hang & abd. wrist, median N (C6-7)Flexor Carpi Ulnaris- flex/add. wrist, ulnar N (C7-8) Flexor digiti minimi brevis- flex 5th finger at proximal phalynx Ulnar N (O) flexor retinaculum and hamate bone (I) medial side of base of proximal phalynx of 5th digitFlexor Digitorum Brevis- flex proximal phalanges, med plantar N (L4,5)Flexor Digitorum Longus- flex distal phalanges of toes, tibial N (L5, S1)Flexor Digitorum Profundus- flex. distal interphalangeal joints & assists in add. & flex. @ wrist, ulnar N & interosseus branch of median N (C7-T1) (O) ant. surface of distal phalanges of fingersFlexor Digitorum Superficialis- flex. wrist & middle phalanges of fingers, median N (C7-T1) (O) sides of middle phalanges of 4 fingersFlexor Hallucis Brevis: flex metatarsalphalangeal joint of big toe, med plantar N (L4-S1)Flexor Hallucis Longus: flex big toe, plantar flex, tibial N (L5-S2)Flexor Pollicis Brevis: abd/assists opposition of thumb, median N (C8-T1)Flexor Pollicis Longus: flex thumb, ant interosseus median n (C8-T1)Gastrocnemius- Plantar flexion of ankle joint and flexion of knee Tibial N (O) upper post part of medial condyle of femur. Supracondylar line and lat condyle of femur (I) Calcaneous via Achilles tendonGenioglossus: protracts tongue; can also depress tongue and work with other extrinsic mm to retract tongue, hypoglossal cranialGeniohyoid- pulls hyoid bone superiorly and anteriorly shortening floor of mouth/draws tongue forward First cervical n through hypoglossal n (O) inf mental spine on inner surface of mandible (I) ant surface of body of hyoid boneGluteus Maximus- extends/lat rotates thigh/Assists in