Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
Muscle? Origin? Insertion? Action?
|
Stylohyoid
a. Origin: styloid process of temporal bone b. Insertion: hyoid bone c. Action: elevates hyoid bone |
|
Muscle? Origin? Insertion? Action?
|
Masseter
a. Origin: zygomatic arch b. Insertion: coronoid and angle of mandible c. Action: elevates and protracts mandible |
|
Muscle? Origin? Insertion? Action?
|
Mylohyoid
a. Origin: Mandible b. Insertion: hyoid bone c. Action: elevates hyoid bone and floor of mouth |
|
Muscle? Origin? Insertion? Action?
|
Sternohyoid
a. Origin: clavicle and sternum b. Insertion: hyoid bone c. Action: depresses hyoid bone |
|
Muscle? Origin? Insertion? Action?
|
Pectoralis major
a. Origin: clavicle and sternum b. Insertion: greater tubercle of humerus c. Action: arm flexion and adduction |
|
Muscle? Origin? Insertion? Action?
|
Pectoralis minor
a. Origin: ribs 3-5 b. Insertion: coracoid process c. Action: protracts and depresses scapula |
|
Muscle? Origin? Insertion? Action?
|
External intercostals
a. Origin: inferior border of upper rib b. Insertion: superior border of lower rib c. Action: elevate ribs (for inspiration) |
|
Muscles? Origin? Insertion? Action?
|
Trapezius
a. Origin: superior nuchal line and nuchal ligament b. Insertion: clavicle and scapula (acromion and spine) c. Action: i. Superior fibers: elevate scapula ii. Middle fibers: retract scapula iii. Inferior fibers: depress scapula |
|
Muscles? Origin? Insertion? Action?
|
Latissimus dorsi
a. Origin: T7-T12 and iliac crest b. Insertion: intertubercular groove c. Action: arm extension and adduction |
|
Muscles? Origin? Insertion? Action?
|
Serratus anterior
a. Origin: ribs 1-8 b. Insertion: medial border of scapula below spine c. Action: protracts scapula |
|
Muscles? Origin? Insertion? Action?
|
Rhomboid major
a. Origin: T2-T5 spinous processes b. Insertion: medial border of scapula below spine c. Action: retracts (adducts) and elevates scapula |
|
Muscles? Origin? Insertion? Action?
|
Rhomboid minor
a. Origin: C7-T1 spinous processes b. Insertion: medial border of scapula above rhomboid major c. Action: same as rhomboid major |
|
Muscle? Origin? Insertion? Action?
|
Levator scapulae
a. Origin: C1-C4 transverse processes b. Insertion: superior medial border of scapula c. Action: elevates scapula |
|
Muscle? Origin? Insertion? Action?
|
Supraspinatus**
a. Origin: supraspinous fossa of scapula b. Insertion: greater tubercle of humerus c. Action: abducts arm |
|
Muscle? Origin? Insertion? Action?
|
Deltoid
a. Origin: acromial end of clavicle; acromion and spine of scapula b. Insertion: deltoid tuberosity of humerus c. Action: i. Anterior fibers: flex and medially rotate arm ii. Middle fibers: abduct arm iii. Posterior fibers: extend and laterally rotate arm |
|
Muscle? Origin? Insertion? Action?
|
Infraspinatus**
a. Origin: infraspinous fossa b. Insertion: greater tubercle of humerus c. Action: adducts and laterally rotates arm |
|
Muscle? Origin? Insertion? Action?
|
Teres minor**
a. Origin: lateral border of scapula b. Insertion: greater tubercle of humerus c. Action: adducts and laterally rotates arm |
|
Muscle? Origin? Insertion? Action?
|
Teres major
a. Origin: inferior lateral border of scapula b. Insertion: lesser tubercle of humerus c. Action: adducts, and medially rotates arm |
|
Muscle? Origin? Insertion? Action?
|
Subscapularis**
a. Origin: subscapular fossa of scapula b. Insertion: lesser tubercle of humerus c. Action: medially rotates arm |
|
Muscle? Origin? Insertion? Action?
|
Biceps brachii
a. Origin (long head): supraglenoid tubercle of scapula b. Origin (short head): coracoid process of scapula c. Insertion: radial tuberosity d. Action: flexes and supinates forearm |
|
Muscle? Origin? Insertion? Action?
|
Brachialis
a. Origin: distal humerus b. Insertion: coronoid process of ulna c. Action: flexes forearm |
|
Muscle? Origin? Insertion? Action?
|
Triceps brachii
a. Origin: scapula and humerus b. Insertion: olecranon process of ulna c. Action: extends forearm; extends and adducts arm |
|
Muscle? Origin? Insertion? Action?
|
Pronator teres
a. Origin: medial epicondyle of humerus b. Insertion: lateral radius c. Action: pronates forearm |
|
Muscle? Origin? Insertion? Action?
|
Palmaris longus
a. Origin: medial epicondyle of humerus b. Insertion: flexor retinaculum c. Action: weak wrist flexor |
