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HSCS 2813 Muscles of the Body
Origin, Insertion, & Action of the Muscles of the Bpdy
65
Anatomy
Undergraduate 2
11/17/2017
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Term
Pectoralis Major
 Definition
O: Sternum and Ribs I: Greater tubercle of humerus A: Flexes and IR shoulder
Term
Pectoralis Minor
 Definition
O: Ribs 3-5 I: Coracoid process A: Anteriorly tilts scapula
Term
Trapezius
 Definition
O: EOP, Thoracic vertebrae I: Clavicle, spine of scapula A: Adducts scapula, rotates and flexes head
Term
Rhomboid Major/Minor
 Definition
O: Thoracic vertebrae 2-5 I: Medial border of scapula A: Adduct and elevate scapula
Term
Latissimus Dorsi
 Definition
O: Thoracic vertebrae 7-12 I: Intertubercle groove of humerus A: Shoulder IR
Term
Deltiod
 Definition
O: Clavicle, Acromion, Spine of Scapula I: Deltoid tubersoty of humerus A: Abducts shoulder, assist in IR and ER
Term
Serratus Anterior
 Definition
O: Upper 8 ribs I: Medial border of scapula A: Abducts scapula, hold medial border to thoracic wall
Term
Subscapularis
 Definition
O: Subscapular fossa I: Lesser tubercle of humerus A: Shoulder IR
Term
Supraspinatus
 Definition
O: Supraspinus fossa I: Greater tubercle of humerus A: Abducts shoulder and stabilizes humeral head during motion
Term
Infraspinatus
 Definition
O: Infraspinous fossa I: Greater tubercle of humerus A: Shoulder ER
Term
Teres Minor
 Definition
O: Upper lateral border of scapula I: Greater tubercle of humerus A: Shoulder ER
Term
Teres Major
 Definition
O: Inferior angle of scapula I: Lesser tubercle of humerus A: Shoulder ER
Term
Triceps Brachi - Long Head
 Definition
O: Scapula I: Olecranon process A: Extends elbow, Adducts and extends shoulder
Term
Triceps Brachi - Medial Head
 Definition
O: Distal Humerus I: Olecranon process A: Extends elbow, Adducts and extends shoulder
Term
Triceps Brachi - Lateral Head
 Definition
O: Proximal humerus I: Olecranon process A: Extends elbow, Adducts and extends shoulder
Term
Biceps Brachii - Long Head
 Definition
O: Scapula I: Radial tuberosity A: Flexes shoulder, flexes elbow, supinates forearm
Term
Biceps Brachii - Short Head
 Definition
O: Scapula I: Radial tuberosity A: Flexes shoulder, flexes elbow, supinates forearm
Term
Brachialis
 Definition
O: Distal humerus I: Ulna A: Flexes elbow
Term
Coracobrachialis
 Definition
O: Coracoid process I: Middle of humerus A: Flexes and adducts shoulder
Term
Brachioradalis
 Definition
O: Proximal humerus I: Radius A: Flexes elbow, assists with pronation and supination
Term
Flexor Carpi Radialis
 Definition
O: Medial epicondyle I: 2nd Metacarpal A: Flexes and abducts wrist
Term
Flexor Carpi Ulnaris
 Definition
O: Medial epicondyle I: Pisiform and Hamate A: Flexes and abducts wrist
Term
Extensor Carpi Radialis
 Definition
O: Distal humerus I: Base of 3rd metacarpal A: Extends and abducts wrist
Term
Extensor Carpi Ulnaris
 Definition
O: Lateral epicondyle I: Base of 5 metacarpal A: Extends and adducts wrist
Term
Extensor Digitorum
 Definition
O: Lateral epicondyle I: Digits 2 -5 A: Extends MP joints and IP joints
Term
Iliocostalis
 Definition
O: Ribs 3-6 I: Cervical vertebrae A: Extends cervical spine
Term
Longissimus
 Definition
O: Upper thoracic vertebrae I: Lower cervical vertebrae A: Extends spines, lateral flexion
Term
Spinalis
 Definition
O: Upper lumbar vertebrae I: Lower upper thoracic vertebrae A: Extends spine, lateral flexion
Term
Sternocleidomastiod
 Definition
O: Sternum and clavicle I: Mastoid process A: Flexes neck, lateral flexion
Term
Orbicularis Occuli
 Definition
O: Frontal bone, maxilla I: Circumference of orbit A: Closes eyes
Term
Orbicularis Oris
 Definition
O: Surrounding mouth I: Skin and mucous membrane A: Closes lips
Term
Massetter
 Definition
O: Maxilla and zygomatic arch I: Angle and ramus of mandible A: Closes jaw
Term
External Intercostals
 Definition
O: Lower border of the ribs I: Upper border of ribs below A: Inhalation
Term
Internal Intercostals
 Definition
O: Inner surface of the ribs I: Upper border of ribs below A: Exhalation
Term
Rectus Abdominus
 Definition
O: Pubic crest and synthesis I: Costal cartilage of ribs 5-7 A: Flexes vertebral column
Term
External Obliques
 Definition
O: Ribs 5-8 I: Linea alba A: Flexes vertebral column
Term
Internal Obliques
 Definition
O: Iliac crest I: Linea alba A: Flexes vertebral column
Term
Transverse Abdominus
 Definition
O: Costal cartilage of lower 6 ribs I: Linea alba A: Flatten abdominal wall
Term
Gluteus Maximus
 Definition
O: Gluteal line of ilium I: IT band, femur A: Extends hip, ER
Term
Gluteus Medius
 Definition
O: Outer Ilium I: Greater trochanter A: Abducts hip
Term
Tensor Fascia Latae
 Definition
O: Iliac crest I: IT Band A: Flexes and abducts hip, IR
Term
Adductor Magnus
 Definition
O: Pubic ramus I: Femur A: Adduct hip
Term
Adductor Longus
 Definition
O: Pubic bone I: Femur A: Adduct hip
Term
Pectineus
 Definition
O: Pubic ramus I: Femur A: Adduct hip
Term
Gracilis
 Definition
O: Pubic synthesis I: Medial tibia A: Adduct hip
Term
Rector Femoris
 Definition
O: Iliac spine, acetabulum I: Patella to tibial tuberosity A: Flexes hip, extends knee
Term
Vastus Medialis
 Definition
O: Intertrochanteric line I: Patella to tibial tuberosity A: Extends Knee
Term
Vastus Lateralis
 Definition
O: Greater trochanter I: Patella to tibial tuberosity A: Extends knee
Term
Vastus Intermedius
 Definition
O: Proximal femur I: Patella to tibial tuberosity A: Extends knee
Term
Sartorius
 Definition
O: ASIS I: Medial tibia A: Flexes and abducts hip, ER
Term
Biceps Femoris
 Definition
O: Ischium I: Lateral tibia and fibular head A: Flexes knee and ER
Term
Semitendonosis
 Definition
O: Ischium I: Medial tibia A: Flexes knee and ER
Term
Semimembranosis
 Definition
O: Ischium I: Medial condyle of tibia A: Flexes knee and IR
Term
Tibialis Anterior
 Definition
O: Lateral tibia I: Cuneiform, 1st metatarsal A: Dorsiflexes ankle
Term
Gastrocnemius
 Definition
O: Medial and lateral femoral condyle I: Posterior calcaneus A: Plantarflexes ankle
Term
Soleus
 Definition
O: Fibular head, between tibia and fibula I: Posterior calcaneus A: Plantarflexes ankle
Term
Gluteus Minimus
 Definition
O: Lateral Ilium I: Greater Trochanter A: Abducts hip, Stablizes pelvis
Term
Buccinator
 Definition
O:Maxilla I: sides of mouth A: Facilitates smile; Puckers lips
Term
Temporalis
 Definition
O: Temporal bone I: Mandible A: Closes jaw
Term
Diaphragm
 Definition
O: Lower portion of the rib cage I: Central tendon of diaphragm A: Enlarges thorax, Facilitates inspiration
Term
Flexor Digitorium Superficialis
 Definition
O: Lateral epicondyle I: Distal phalynx A: Flexes DIP and PIP joints
Term
Flexor Digitorium Profundus
 Definition
O: Lateral Epicondyle I: Middle Phalynx A: Flexes MP and PIP joints
Term
Pronator Teres
 Definition
O: Medial epicondyle I: Lateral radius A: Pronates and flexes forearm
Term
Suprinator
 Definition
O: Lateral epicondyle I: Radius A: Supinates forearm
Term
Adductor Brevis
 Definition
O: Pubic bone I: Femur A: Adducts hip
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