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MusclesT1

muscles

QuestionAnswer
Origin Splenius Spinous process of inferior cervical and superior thoracic vertebrae
Insertion Splenius Mastoid process, occipital bone, and transverse processes of superior cervical verterbrae
Action Splenius Extension of head and neck; lateral flexion and rotation of the head and neck
Orgin Transversopinalis Transverse processes of vertebrae
Insertion Transversopinalis Spinous process of more superior vertebrae
Action Transversospinalis Extension of vertebral column; rotation of vertebral column; stablilizes the vertebral cloumn
Orgin Trapezius Posterior surface of occipital bone; ligamentum nuchae; spinous process of thoracic vertebrae
Insertion Trapezius Lateral third of clavical; acromion process; spine of scapula
Action Trapezius Superior Fibers: elevate scapulaMiddle: Retract scapulaInferior: depress scapula
Orgin Rhomboid major and minor Minor: Ligamentum nuchae; spinous process of vertebrae C7 and T1Major: spinous process of T2- T5
Insertion Rhomboid major and minor Medial border of scapula
Action of Rhomboid major and minor Retracts scapula: Elevates scapula; acts with pectoralis minor or inferiorly rotate scapula
Orgin Levator scapulae Transverse process of C1- C4
Insertion Levator scapulae Medial border of scapula near superior angle
Action Levator scapulae Elevates scapula; acts with pectoralis minor or inferiorly rotate scapula
Orgin Serratus anterior External surfaces of ribs 1-8
Insertion Serratus anterior Medial border of scapula
Action Serratus anterior Protraction and superior rotation of scapula; holds scapula against thoracic wall
Orgin Pectoralis minor External surfaces of ribs 3-5
Insertion Pectoralis minor Coracoid process of scapula
Action Pectoralis minor Depression and inferior rotation of scapula
Orgin deltoid Lateral third of clavical; acromion process; spine of scapula
Insertion deltoid Deltoid tuberosity of humerus
Action Deltoid Anterior fibers: medial rotation and flexion of arm Middle: abduction of armPosterior: lateral rotation and extension of arm
Orgin Supraspinatus Supraspinous fossa of scapula
Insertion Supraspinatus Greater tubercle of humerus
Action of Supraspinatus Abduction of arm
Orgin Infraspinatus Infraspinous fossa of scapula
Insertion Infraspinatus Greater Tubercle of humerus
Action Infraspinatus Lateral rotation of arm
Orgin Teres minor Lateral border of scapula
Insertion Teres minor Greater Tubercle of Humerus
Action Teres minor Lateral rotation of arm
Orgin teres major Scapula, near inferior angle
Insertion teres major Medial lip of intertubercular groove
Action teres major Extension, adduction and medial rotation of arm
Orgin latissimus dorsi Spinous process of vertebrae T6-T12; thoracolumbar fascia; iliac crest; inferior three ribs
Insertion latissimus dorsi Intertubercular groove of humerus
Action latissimus dorsi Extension, adduction and medial rotation of arm
Orgin Subscapularis Subscapular fossa of scapula
Insertion Subscapularis Lesser tubercle of humerus
Action subscapularis Adduction and medial rotation of arm
Orgin Pectoralis major Medial half of clavical; sternum; costal cartilages of ribs 1-6
Insertion Pectoralis major Lateral lip of intertubercular groove of humerus
Action Pectoralis major Flexion, medial rotation and adduction of the arm
orgin Biceps Brachii Long head; superior margin of gelnoid fossa of scapula
Insertion Biceps Brachii Radial tuberosity of radius; fascia of medial forearm via bicipital aponeurosis
Action Biceps Brachii Flexion and supination of forearm; flexion of arm
Orgin Coracobrachialis Coracoid Process of scapula
Insertion Coracobrachialis Medial surface of humerus
Action Coracobrachilalis Flexion and adduction of arm
Orgin Brachialis Anterior surface of humerus
Insertion Brachialis Coronoid process of ulna
Action Brachialis Flexion of forearm
Orgin Triceps Brachii Long head: inferior margin of glenoid fossa of scapulaLateral: posterior surface of humerusMedial: Posterior surface of humerus, inferior to origin of lateral head
Insertion triceps brachii Olecranon process of ulna
Action Triceps brachii Extension of forearm; long heads extends and adducts arm
Orgin Flexor carpi radialis Medial epicondyle of humerus
Insertion Flexor carpi radialis Base of metacarpal of the second digit
Action Flexor carpi radialis Flexion and abduction of wrist
Orgin Flexor carpi ulnaris Medial epicondyle of humerus; olecranon process of radius
Insertion Flexor carpi ulnaris Medial carpal bones; metacarpal of fifth digit
Action Flexor carpi ulnaris Flexion and adduction of the wrist
Orgin Pronator quadratus Anterior surface of distal ulna
Insertion Pronator quadratus Anterior surface of distal radius
Action Pronator quadratus Pronation of forearm
Orgin Brachioradialis Lateral supracondylar ridge of humerus
Insertion Brachioradialis Lateral surface of distal radius
Action Brachioradialis Flexion of forearm
Orgin Gluteus maximus Lateral surface of ilium; dorsal surface of sacrum and coccyx
Insertion Gluteus maximus Iliotibial tract; gluteal tuberosity of femur
Action Gluteus maximus Extension and lateral rotation of thigh; powerful extensor for climbing and running; stabilizes pelvis and thigh while standing erect
Orgin gluteus medius Lateral surface of ilium
Insertion Gluetus medius Greater trochanter of femus, lateral surface
Action Gluteus medius Abduction and medial rotation of thigh, steadies the pelvis during walking
Orgin Gluteus minimus Lateral surface of ilium, inferior to origin of gluteus medius
Insertion Gluteus minimus Greater trochanter of femur, anterior surface
Action Gluteus minimus Abduction and medial rotation of thigh; steadies the pelvis during walking
Orgin psoas major Bodies of vertebrae of T12-L5
Insertion psoas major Lesser trochanter of femur
Action psoas major Flexion of thigh
Orgin Tensor fasciae latae Anterior superior iliac crest
Insertion Tensor fasciae latae Iliotibial tract
Action Tensor fasciae latae Flexes, abducts and medially rotates thigh; steadies trunk of thigh while standing
Orgin Quadriceps femoris:Rectus femoris Anterior inferior iliac spine of ilium
Insertion Quadriceps femoris:Rectus femoris Patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
Action Quadriceps femoris:Rectus femoris Extension of leg; flexion of thigh
Orgin Quadricpes femoris:Vastus lateralis Greater trochanter and lateral lip of linea aspera of femur
Insertion Quadricpes femoris:Vastus lateralis Patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
Action Quadricpes femoris:Vastus lateralis Extension of leg
Orgin Quadriceps femoris: Vastus medialis Intertrochanteric line and medial lip of linea apsera
Insertion Quadriceps femoris: Vastus medialis Patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
Action Quadriceps femoris: Vastus medialis Extension of leg
Orgin Quadriceps femoris:Vastus intermedius Anterior and lateral surfaces of femoral shaft
Insertion Quadriceps femoris:Vastus intermedius Patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
Action Quadriceps femoris:Vastus intermedius extension of leg
orgin Sartorius Anterior superior iliac spine of ilium
Insertion Sartorius Medial surface of tibia, near the knee joint
Action sartorius Flexion, abduction and lateral rotation of thigh; flexion of leg
Orgin adductor longus Body of pubic bone
Insertion adductor longus Linea aspera of femur
Action addcutor longus Adduction and flexion of thigh
Orgin adductor brevis Body and inferior ramus of pubic bone
Insertion adductor brevis Pectineal line and linea aspera of femur
Action adductor brevis Adduction and flexion of thigh
Orgin gracilis Body and inferior ramus of pubic bone
Insertion gracilis Medial surface of tibia, near the knee joint
Action gracilis Adduction and thigh; flexion and medial rotation of leg
Orgin pectineus Superior ramus of pubic bone
Insertion pectineus Pectineal line of femur
Action pectineus Adduction and flexion of thigh
Orgin biceps femoris Long head: Ischial tuberosity of ischiumShort head: linea aspera and lateral supracondylar line of femur
Insertion biceps femoris Lateral side of head of fibula
Action bicepts femoris Extension of thigh, flexion of leg
Orgin semimembranosus Ischial tuberosity of ischium
Insertion semimembranosus Posterior surface of medial condyle of tibia
Action semimembranosus Extension of thigh, flexion of leg
Orgin Semitendinosus Ischial tuberosity of ischium
Insertion semitendinosus Medial surface of tibia, near the knee joint
Action semiteninosis Extension of thigh, flexion of leg
Created by: Mollie28