Lab 5 Upper Limb and Facial Muscles (ID Material)

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BIOL252L Shemer Midterm 2
Marissa Alvarez
Flashcards by Marissa Alvarez, updated more than 1 year ago
Marissa Alvarez
Created by Marissa Alvarez about 7 years ago
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Question Answer
Protraction: Punching a person, pushing against the wall Retraction: going down for a push up Elevation: shrugging shoulders, shoulder shrugs (with weights) Depression: holding a heavy suitcase, dipping arm with a heavy weight
Serratus Anterior, Levator Scapulae, and Rhomboids (major & minor) CANNOT be seen on arm model!!
Supraspinatus Origin: Supraspinous fossa Insertion: Greater tubercle of humerus Action: Lateral rotation of the humerus
Blue Star = Pectoralis Major Origin: Clavicle and Sternum Insertion: Intertubercular sulcus Action: Adduction of the humerus Red star = Coracobrachialis Origin: Coracoid process (of scapula) Insertion: Humerus Action: Adduction of the humerus
Purple star = Coracobrachialis Origin: Coracoid process (of scapula) Insertion: Humerus Action: Adduction of the humerus Blue Star = Brachialis Origin: Anterior humerus Insertion: Ulnar Tuberosity Action: Flexion of the elbow (humeroulnar joint)
Latissimus Dorsi Origin: Thoracic, lumbar, and sacral vertebrae Insertion: Intertubercular Sulcus Action: Extension and medial rotation of the humerus (i.e. rowing a boat)
Erector Spinae -more superficial -span several vertebrae -major extensors of the spinal column
Trapezius Origin: Occipital protuberance to T12 Insertion: Spine and acromion of the scapula Action: Elevation, depression, and retraction of the scapula (also lateral flexion of the neck)
Serratus Posterior -assist in ventilating the lungs
Latissimus Dorsi Origin: Thoracic, Lumbar, and Sacral Vertebra Insertion: Intertubercular Sulcus Action: Extension and medial rotation of the humerus (i.e. rowing a boat)
Rhomboids (major & minor) Origin: Thoracic vertebrae Insertion: Scapula Action: Retraction of the scapula
Levator Scapulae Origin: Cervical Vertebrae Insertion: Scapula Action: Elevate the scapula
Rhomboids (major & minor) Origin: Thoracic vertebrae Insertion: Scapula Action: Retraction of the scapula
Buccinator (innervated by facial nerve CN VII) -forms wall of cheek
Scalenes -extend to the first two ribs -stabilize the thoracic cage during forced breathing -laterally flex the neck when working unilaterally
Supinator Origin: Lateral Epicondyle & Ulna Insertion: Radius Action: Supination of the antebrachium
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