BSCI 201 Study Guide - Extensor Carpi Ulnaris Muscle, Extensor Digitorum Longus Muscle, Flexor Digitorum Longus Muscle

• School: University of Maryland
• Department: Biological Sciences Program
• Course: BSCI 201
• Professor: Justicia Opoku

Document Summary

Frontal belly- raises eyebrows (cranial aponeurosis/ skin of eyebrows) Occipital belly- pulls scalp back (occipital bones/ galea aponeurotica- top area of skull) Orbicularis oculi- closes eyes (frontal and maxillary bones/ inserts of eyelid tissue) Zygomaticus major- smile (zygomatic bone/ skin at corner of mouth) Zygomaticus minor- smile (zygomatic bone/ skin at corner of mouth) Masseter- prime mover of jaw closure (zygomatic arch/ angle of mandible) Temporalis (temples)- closes jaw (temporal fossa/ coronoid process of mandible) Platysma- tenses skin of neck (deltoid/ lower margin of mandible) Sternocleidomastoid- flexion of neck forward (medial of clavicle/ mastoid process of temporal bone) Different pectoralis major portions- prime mover of arm flexion rotates arm (clavicle/ short tendon in humerus) Serratus anterior- rotate scapula (lateral aspects of ribs/ anterior surface of scapula) Deltoid- pm of arm abduction (acromion/ deltoid tuberosity of humerus) Pectoralis minor- draws scapula forward (anterior surface of ribs/ scapula coracoid process)