Muscular System - Origins, Insertions, And Actions Of A Select Group Of Muscles


Lab Unit 5 - Musuclar System Flashcards

- For Orgins, Insertions, And Actions Of A Slect Group Of Muscle
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Front Back
Zygomaticus major - Origin
(Face and Neck)
 
Zygomatic bone
Zygomaticus major - Insertion
(Face and Neck)
 
Angle of mouth
Zygomaticus major - Action
(Face and Neck)
 
Elevates and abducts upper lip (as in laughing)
Sternocleidomastoid - Origin
(Face and Neck)
 
Sternum, clavicle
Sternocleidomastoid - Insertion
(Face and Neck)
 
Mastoid process
Trapezius - Origin
(Posterior Thorax)
 
Occipital bone, Vertebrae (spines of C7-T12)
Trapezius - Insertion
(Posterior Thorax)
 
Clavicle, Scapula (spine and acromion)
Trapezius - Action
(Posterior Thorax)
 
Elevates and depresses scapula; rotates scapula
Latissimus dorsi - Origin
(Posterior Thorax)
 
Vertebrae (spines of T7-L5), Ribs 8-12, sacral and iliac crests
Latissimus dorsi - Insertion
(Posterior Thorax)
 
Humerus (intertubercular groove)
Latissimus dorsi - Action
(Posterior Thorax)
 
Adducts, extends, and rotates arm (medially); Draws arm posteriorly
Pectoralis major - Origin
(Anterior Thorax)
 
Clavicle (medial half), sternum (body), cartilages of ribs 2-6
Pectoralis major - Insertion
(Anterior Thorax)
 
Humerus (greater tubercle)
Pectoralis major - Action
(Anterior Thorax)
 
Adducts, flexes, and medially rotates arm
Deltoid - Origin
(Shoulder)
 
Clavicle, scapla (spine and acromion)
Deltoid - Insertion
(Shoulder)
 
Humerus (deltoid tuberosity)
Deltoid - Action
(Shoulder)
 
Abducts, flexes, extends, and medially and laterally rotates arm
Infraspinatus - Origin
(Shoulder)
 
Scapula (infraspinous fossa)
Infraspinatus - Insertion
(Shoulder)
 
Humerus (greater tuberosity)
Infraspinatus - Action
(Shoulder)
 
Lateral rotation of arm; adduction of arm
Biceps brachii - Origin
(Upper Arm)
 
Scapula (supraglenoid tubercle), Scapula (coracoid process)
Biceps brachii - Insertion
(Upper Arm)
 
Radius (radial tuberosity)
Biceps brachii - Action
(Upper Arm)
 
Flexes forearm; Supinates forearm; Flexes arm
Triceps brachii - Origin
(Upper Arm)
 
Scapula (infraglienoid tubercle), humerus (lateral and posterior surface)
Triceps brachii - Insertion
(Upper Arm)
 
Ulna (olecranon process)
Triceps brachii - Action
(Upper Arm)
 
Extends forearm; extends arm
Flexor carpi radialis - Origin
(Forearm)
 
Medial epicondyle of humerus
Flexor carpi radialis - Insertion
(Forearm)
 
Metacarpals II and III
Flexor carpi radialis - Action
(Forearm)
 
Flexes and abducts hand
Brachioradialis - Origins
(Forearm)
 
Lateral epicondyle of humerus
Brachioradialis - Insertion
(Forearm)
 
Styloid process of radius
Brachioradialis - Action
(Forearm)
 
Flexes forearm; supinates and pronates forearm
Rectus abdominis - Origin
(Abdominal Wall)
 
Pubic crest, pubic symphysis
Rectus abdominis - Insertion
(Abdominal Wall)
 
Sternum (xiphoid process) and inferior ribs
Rectus abdominis - Action
(Abdominal Wall)
 
Flexes vertebral column; compresses abdomen
Gluteus maximus - Origin
(Thigh)
 
Ilium
Gluteus maximus - Insertion
(Thigh)
 
Femur
Gluteus maxius - Action
(Thigh)
 
Extends thigh and rotates it laterally
Quadriceps femoris group - Origin
(Thigh)
 
Rectus femoris - ilium; Others - femur
Quadriceps femoris group - Insertion
(Thigh)
 
Tibia (Tibal ruberosity)
Quadriceps femoris group - Action
(Thigh)
 
Extends leg; Rectus femoris also flexes thigh
Sartorius - Origin
(Thigh)
 
Os coxa (anterior superior iliac spines)
Sartorius - Insertion
(Thigh)
 
Tibia (medial side of tibial tuberosity)
Sartorius - Action
(Thigh)
 
Flexes thigh and leg; rotates leg medially; rotates thight laterally
Gastrocnemius - Origin
(Thigh)
 
Femur (lateral and medial condyles)
Gastrocnemius - Insertion
(Thigh)
 
Calcaneus by way of Achilles tendon
Gastrocnemius - Action
(Calf)
 
Plantar flexes foot; flexes leg
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