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Mblex Action, Insertion, And Origins Of
Muscles Test Questions And Answers.
How many cervical vertebrae are there? -
How many thoracic vertebrae are there? -
How many lumbar vertebrae are there? -
How many pairs of ribs are there? -
Which pair of ribs are true? - \Pairs 1- Which pair of ribs are false? - \Pairs 8- Which pair of ribs are floating? - \Pairs 11- Origin - \attachment of a muscle that remains relatively fixed during muscular contraction Insertion - \attachment of a muscle on a bone that moves during muscular contraction Origin of the Deltoid: - \clavicle, acromion, spine of scapula Insertion of the Deltoid: - \deltoid tuberosity Action of the Deltoid: - \abduction, medial rotation, flexion Origin of Trapezius: - \occipital bone, C7-T Insertion of Trapezius: -
\clavicle, acromion, spine of scapula Action of Trapezius: - \elevation, upward rotation, retraction, depression Origin of Serratus Anterior: - \ribs 1- Insertion of Serratus Anterior: - \medial border of scapula Action of Serratus Anterior: - \pulls shoulder forward, protraction, upward rotation, stabilization Origin of Pec Major: - \clavicle, sternum, coastal cartilage of ribs 1- Insertion of Pec Major: - \bicipital groove Action of Pec Major: - \flexes upper arm, adducts arm anteriorly, medial rotation, horizontally adducts arm across chest Origin of Pec Minor: - \ribs 3- Insertion of Pec Minor: - \coracoid process Action of Pec Minor: - \pulls shoulder down and forward, abducts scapula Origin of Latissimus Dorsi: - \aponeurosis from T7 to iliac crest, lower 3 or 4 ribs, inferior angle of scapula Insertion of Latissimus Dorsi: - \bicipital groove Action of Latissimus Dorsi: - \extends upper arm, adducts upper arm, medial rotation of arm Origin of Teres Major: - \inferior angle of scapula Insertion of Teres Major: -
Action of Teres Minor: - \laterally rotation of arm, extension of arm Origin of Subscapularis: - \subscapular fossa Insertion of Subscapularis: - \lesser tubercle of humerus Action of Subscapularis: - \assists pec major and anterior deltoid with medial rotation Origin of Biceps Brachii: - \coracoid process of scapula Insertion of Biceps Brachii: - \radial tuberosity Action of Biceps Brachii: - \flexion, supination Origin of Brachialis: - \anterior surface of humerus Insertion of Brachialis: - \coronoid process of ulna Action of Brachialis: - \flexes forearm at elbow Origin of Coracobrachialis: - \coracoid process of scapula Insertion of Coracobrachialis: - \medial surface of humerus Action of Coracobrachialis: - \flexes, adducts arm Origin of Brachioradialis: - \lateral supracondylar ridge of humerus Insertion of Brachioradialis: - \styloid process of radius
Action of Brachioradialis: - \flexes elbow Origin of Triceps Brachii: - \LH: Infraglenoid tuberosity of scapula, SH: lateral and posterior surface of humerus Insertion of Triceps Brachii: - \olecranon process of ulna Action of Triceps Brachii: - \extension of elbow and forearm Origin of Iliopsoas: - \iliac fossa, T12-L Insertion of Iliopsoas: - \lesser trochanter of femur Action of Iliopsoas: - \flexes hip, assists in abduction and lateral rotation of thigh Origin of Gluteus Maximus: - \ilium, sacrum, coccyx Insertion of Gluteus Maximus: - \greater trochanter of femur and IT band Action of Gluteus Maximus: - \extension of hip, lateral rotation of hip Origin of Gluteus Medius: - \lateral surface of ilium Insertion of Gluteus Medius: - \greater trochanter of femur Action of Gluteus Medius: - \abducts and medially rotates thigh Origin of Gluteus Minimus: - \lateral surface of ilium Insertion of Gluteus Minimus: - \greater trochanter of femur Action of Gluteus Minimus: -
Origin of Adductor Magnus: - \ischial and pubic rami and ischial tuberosity Insertion of Adductor Magnus: - \linea aspera and adductor tubercle of femur Action of Adductor Magnus: - \adducts thigh Origin of Gracilis: - \pubis Insertion of Gracilis: - \medial surface of tibia Action of Gracilis: - \adducts thigh, assists in flexion and medially rotation of leg Origin of Sartorius: - \anterior superior iliac spine (ASIS) Insertion of Sartorius: - \medial surface of tibia Action of Sartorius: - \flexes, abducts, and laterally rotates thigh, assists in crossing thigh Origin of Rectus Femoris: - \anterior inferior iliac spine (AIIS) Insertion of Rectus Femoris: - \tibial tuberosity Action of Rectus Femoris: - \flexes thigh, extends leg at knee Origin of Vastus Lateralis: - \greater trochanter of femur Insertion of Vastus Lateralis: - \tibial tuberosity Action of Vastus Lateralis: - \knee extension
Origin of Vastus Medialis: - \linea aspera of femur Insertion of Vastus Medialis: - \tibial tuberosity Action of Vastus Medialis: - \knee extension Origin of Vastus Intermedius: - \anterior and lateral shaft of femur Insertion of Vastus Intermedius: - \tibial tuberosity Action of Vastus Intermedius: - \knee extension Origin of Biceps Femoris: - \ischial tuberoisty Insertion of Biceps Femoris: - \head of fibula Action of Biceps Femoris: - \flexes and rotates thigh laterally and extends thigh Origin of Semitendinosus: - \ischial tuberosity Insertion of Semitendinosus: - \medial surface of tibia Action of Semitendinosus: - \flexes and medially rotates thigh and extends thigh Origin of Semimembranosus: - \ischial tuberosity Insertion of Semimembranosus: - \medial condyle of tibia Action of Semimembranosus: - \flexes and medially rotates thigh and extends thigh Origin of Gastrocnemius: -
Insertion of Rectus Abdominis: - \pubis Action of Rectus Abdominis: - \flexes trunk Origin of External Oblique: - \lower 8 ribs Insertion of External Oblique: - \iliac crest and linea alba Action of External Oblique: - \flexes trunk to opposite side Origin of Internal Oblique: - \iliac crest, inguinal ligament Insertion of Internal Oblique: - \lower 4 ribs, linea alba Action of Internal Oblique: - \flexion of trunk to the same side Origin of Transverse Abdominis: - \lower ribs, iliac crest Insertion of Transverse Abdominis: - \linea alba and pubic crest Action of Transverse Abdominis: - \compresses abdomen Origin of Sternocleidomastoid (SCM): - \sternum and clavicle Insertion of SCM: - \mastoid process of temporal bone Action of SCM: - \bilaterally flexes head, unilaterally rotates and flexes head to the opposite side Origin of Scalenes: - \transverse processes of C2-C
Insertion of Scalenes: - \ribs 1 and 2 Action of Scalenes: - \bilaterally flexes head, unilaterally flexes head to the same side, raises ribs for inspiration Origin of Erector Spinae Group: - \ilium, sacrum, and lumbar vertebrae Insertion of Erector Spinae Group: - \occipital and temporal bones Action of Erector Spinae Group: - \extension, lateral flexion of spine Origin of Masseter: - \zygomatic arch Insertion of Masseter: - \ramus of mandible Action of Masseter: - \closes jaw Origin of Pterygoid: - \sphenoid, palatal Insertion of Pterygoid: - \mandible, maxilla Action of Pterygoid: - \closes jaw, pulls jaw sideways Origin of Temporalis: - \temporal bone Insertion of Temporalis: - \mandible Action of Temporalis: - \closes and retracts jaw Origin of Buccinator: - \maxilla and mandible
