Lab 8 M U S C L E S
Refer to Muscles 22-23 Naming of muscles Origin Proximal Insertion Distal
Examples of Origin & Insertion Muscle Origin Insertion Temporalis Temporal fossa of the temporal bone Coronoid process of mandible Deltoid Biceps brachii Lateral third of clavicle, acromion, and spine of scapula Short head-coracoid process of scapula. Long head-superior portion of glenoid fossa of scapula Deltoid tuberosity of humerus By common tendon into radial tuberosity of radius and proximal ulna
Temporalis Elevates & retracts mandible Masseter = Prime mover of jaw closure (a) Figure 10.7a
Sternocleidomastoid Deltoid Pectoralis major Sternum Biceps brachii Subclavius Clavicle Subscapularis Pectoralis minor Coracobrachialis Serratus anterior Humerus (a) Figure 10.13a
Superior portion of glenoid cavity Coracoid process of scapula Origin and insertion of biceps brachii Radial tuberosity medial aspect of proximal ulna
Orbicularis oculi Frontalis Temporalis Buccinator Orbicularis oris Mentalis Masseter Sternocleidomastoid Trapezius Platysma Figure 10.6
Levator scapulae Trapezius Deltoid Rhomboid minor Rhomboid major Supraspinatus Clavicle Spine of scapula Infraspinatus Teres minor Teres major Humerus Latissimus dorsi (c) Figure 10.13c
Clavicle Deltoid Sternum Pectoralis major Coracobrachialis Triceps brachii: Lateral head Long head Medial head Biceps brachii Brachialis Brachioradialis (a) Anterior view Figure 10.14a
Supraspinatus* Spine of scapula Deltoid (cut) Greater tubercle of humerus Infraspinatus* Teres minor* Teres major Triceps brachii: Lateral head Long head Latissimus dorsi Humerus Olecranon process of ulna Anconeus (b) Posterior view * Rotator cuff muscles Figure 10.14b
Superficial transverse ligament of palm Palmar aponeurosis Flexor digitorum superficialis Flexor carpi ulnaris Palmaris longus Flexor carpi radialis Medial epicondyle of humerus Medial head of triceps brachii (a) Flexor retinaculum Pronator quadratus Flexor pollicis longus Extensor carpi radialis longus Brachioradialis Pronator teres Tendon of biceps brachii Biceps brachii Figure 10.15a
12th rib Quadratus lumborum Psoas minor Iliac crest Psoas major Iliopsoas Iliacus Anterior superior iliac spine Tensor fasciae latae Pectineus Sartorius Quadriceps femoris Rectus femoris Vastus lateralis Vastus medialis (a) 12th thoracic vertebra 5th lumbar vertebra Adductor longus Gracilis Adductor magnus Tendon of quadriceps femoris Patella Patellar ligament Figure 10.19a
Gluteus medius Gluteus maximus Adductor magnus Gracilis Iliotibial tract Long head Short head Biceps femoris Semitendinosus Semimembranosus Hamstrings (a) Figure 10.20a
Fibularis longus Gastrocnemius Tibia Tibialis anterior Extensor digitorum longus Soleus Extensor hallucis longus Fibularis tertius Superior and inferior extensor retinacula Extensor hallucis brevis Extensor digitorum brevis (a) Figure 10.21a
Patella Head of fibula Gastrocnemius Soleus Fibularis longus Extensor digitorum longus Fibularis brevis Flexor hallucis longus Fibular retinaculum Lateral malleolus (a) Tibialis anterior Extensor hallucis longus Fibularis tertius Superior and inferior extensor retinacula Extensor hallucis brevis Extensor digitorum brevis 5th metatarsal Figure 10.22a
Plantaris Gastrocnemius Medial head Lateral head Tendon of gastrocnemius Calcaneal tendon Medial malleolus (a) Superficial view of the posterior leg. Lateral malleolus Calcaneus Figure 10.23a
Gastrocnemius medial head (cut) Flexor digitorum longus Plantaris (cut) Gastrocnemius lateral head (cut) Popliteus Soleus (cut) Tibialis posterior Fibula Fibularis longus Flexor hallucis longus Tendon of tibialis posterior Medial malleolus Fibularis brevis Calcaneal tendon (cut) Calcaneus (c) The triceps surae has been removed to show the deep muscles of the posterior compartment. Figure 10.23c
Head Temporalis Masseter Shoulder Trapezius Deltoid Arm Triceps brachii Biceps brachii Brachialis Forearm Brachioradialis Flexor carpi radialis Palmaris longus Thigh Rectus femoris Vastus lateralis Vastus medialis Leg Extensor digitorum longus Tibialis anterior Facial Frontalis (frontal belly of epicranius) Orbicularis oculi Orbicularis oris Neck Platysma Sternocleidomastoid Thorax Serratus anterior Pectoralis major Abdomen Rectus abdominis Internal oblique Transversus abdominis External oblique Thigh Tensor fasciae latae Sartorius Adductor longus Gracilis Leg Gastrocnemius Soleus Figure 10.4
Arm Triceps brachii Brachialis Forearm Brachioradialis Extensor digitorum Iliotibial tract Leg Gastrocnemius Soleus Neck Epicranius, occipital belly Sternocleidomastoid Trapezius Shoulder Deltoid Infraspinatus Teres major Rhomboid major Latissimus dorsi Hip Gluteus medius Gluteus maximus Thigh Adductor magnus Hamstrings: Biceps femoris Semitendinosus Semimembranosus Calcaneal (Achilles) tendon Figure 10.5