6. Muscles of the Head and Face Muscle Function Origin Insertion Temporalis Elevate mandible Temporal fossa Coronoid process Masseter Elevate mandible Zygomatic arch Coronoid fossa Digastricus Depress the mandible Jugular; Mastoid Process Mandible
8. Muscles of the Upper Limbs Muscle Function Origin Insertion Brachialis Flexes antebrachium Lateral shaft of humerus from the neck to the supracondyloid ridge Lateral surface of ulna; distal semilunar notch Deltoideus Extend & rotate humerus Spine; scapula humerus Triceps Brachii Extends antebrachium Humerus ulna Biceps Brachii Flexes antebrachium Cranial edge of glenoid cavity within the capsule of the shoulder joint radius Trapezius Draws scapula caudad and mediad Spines of thoracic vertebrae scapula
11. Muscles of the Lower Limbs Muscle Function Origin Insertion Tensor Fascia Latae Extends leg Illium; fascia of gluteus medius Fascia latae Biceps femoris Extends thigh; flexes shank Tuberosity of ischium tibia;patella Semi-tendinosus Extends thigh; flexes shank Tuberosity of ischium Crest of tibia Semi-membranosus Extends thigh Tuberosity and ramus of ischium Medial epicondyle of femur Digital flexors Flexes digits Proximal tibia and fibula Digits Digital extensors Extends digits Proximal tibia and fibula Metatarsals Peroneus Longus Flexes foot Proximal tibia and fibula Metatarsals Peroneus Tertius Flexes foot Lateral side of distal femur Third metatarsal
12. Abdominal Muscles Muscle Function Origin Insertion Obliquus Externus Abdominis Support abdominal viscera; compresses abdomen Caudal ribs; lumbodorsal fascia Aponeurosis to linea alba Ob. Internus Abdominis Support abdominal viscera; compresses abdomen Lumbodorsal fascis; arches between crest of ilium and pubis Aponeurosis to linea alba Transversus Abdominis Support abdominal viscera; compresses abdomen Lumbodorsal fascia Linea alba Rectus Abdominis Support abdominal viscera; maintains vertebral arch flexibility Tubercle of pubis Cartilage ribs
