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;
29 Cards in this Set
- Front
- Back
|
Infraspinatus
|
Origin: Infraspinatous Fossa
Insertion: Greater Tubercle (Humerus) Innervation: Suprascapular n. (C5,6) Action: Arm External Rotation |
|
|
Teres Major
|
Origin: Lateral Border of Scapula
Insertion: Crest of Lesser Tubercle Innervation: Lower Subscapular n. (C5,6,7) Action: Arm Internal Rotation ADduction NOT A ROTATOR CUFF MUSCLE |
|
|
Teres Minor
|
Origin: Lateral Border of Scapula
Insertion: Greater Tubercle (Humerus) Innervation: Axillary n. (C5,6) Action: Arm External Rotation |
|
|
Which rotator cuff muscle attaches to the lesser tubercle?
|
Subscapularis
|
|
|
What are the two muscles innervated by the axillary nerve?
|
teres minor and deltoid
|
|
|
Subscapularis
|
Origin: Subscapular Fossa
Insertion: Lesser Tubercle Innervation: Upper & Lower Subscapular n. (C5, 6, 7) Action: Arm Internal Rotation and ADduction |
|
|
Most commonly injured rotator cuff muscle
|
Supraspinatus
|
|
|
Supraspinatus
|
Origin: Supraspinatous Fossa
Insertion: Greater Tubercle (Humerus) Innervation: Suprascapular n. (C4,5,6) Action: Arm - Assist deltoid in Abduction |
|
|
What are the three muscles in the anterior department of the arm?
|
Biceps Brachii (Long Head and Short Head)
Coracobrachialis Brachialis |
|
|
Biceps Brachii
|
Long Head Origin: Supraglenoid Tubercle
Short Head Origin: Coracoid Process Insertion: Radial Tuberosity Action: Flexor of Forearm @ Elbow 2 degree Supinator of Forearm Innervation: Musculocutaneous n. |
|
|
Coracobrachialis
|
Coracoid Process --> Humerus
Flexor & ADductor of Arm @ Shoulder Musculocutaneous n. |
|
|
Brachialis
|
Humerus --> Coranoid Process
main Flexor of Forearm @ Elbow Musculocutaneous n. |
|
|
What are the three muscles that attach to the coracoid process?
|
short head of biceps, coracobrachialis, and pec minor
|
|
|
Triceps Brachii
|
Long Head Origin: Infraglenoid Tubercle
Lateral Head Origin: Upper Humerus Medial Head Origin: Lower Humerus Common Tendon --> Olecranon (Ulna) Extensor of Forearm @ Elbow Radial n. |
|
|
What are the superficial extrinsic muscles of the back?
|
Latissimus Dorsi
Trapezius |
|
|
What are the deep extrinsic muscles of the back?
|
Levator Scapulae
Rhomboids |
|
|
What are the 3 origins and insertions of the Trapezius?
|
Origin:
External Occipital Protuberance Nuchal Ligament Spinous Processes C7-T12 Insertion: Scapular Spine Acromion Lateral Clavicle |
|
|
What innervatures the trapezius and what are its actions?
|
Innervation: Spinal Accessory n. aka Cranial Nerve XI
Action --> Scapula & Shoulder Superior: Elevate Middle: Retract Inferior: Depress |
|
|
Rhomboids
|
Origin: Spinous Processes C7-T7 and Nuchal Ligament
Insertion: Medial border of Scapula Innervation: Dorsal Scapular n. (C5) Action --> Scapula Retracts, rotate Help serratus in holding the scapula |
|
|
Levator Scapulae
|
Origin: Transverse Processes C1-4
Insertion: Supero-Medial border of Scapula Innervation: Dorsal Scapular n. (C5) Action --> Scapula Elevates Rotates |
|
|
What are the 4 thoracappendicular anterior muscles?
|
Pectoralis Major
Pectoralis Minor Subclavius Serratus Anterior |
|
|
Pectoralis Major
|
Origin: Clavicle, Sternum, Ribs
Insertion: Crest of the Greater Tubercle Innervation: Medial Pectoral n. (C8, T1) and Lateral Pectoral n. (C5-C7) Action --> Arm Both Adduction and Medially Rotation Clavicular head alone Flex the humerus Sternocostal head Extend humerus from flexed position |
|
|
Pectoralis Minor
|
Origin: 3 or 4 Ribs
Insertion: Corocoid Process of Scapula Innervation: Medial Pectoral n. (C8, T1) Action: Protracts Scapula Help in deep inspiration Help stretch the arm forward like if you want to take bananas. |
|
|
Subclavius
|
Origin: 1st Rib
Insertion: Middle Clavicle Innervation: Nerve to Subclavius (C5) Action --> Clavicle & Scapula Stabilizes Shoulder Protect subclavian vessels Protect sup. Trunk brach. plexus |
|
|
What are the muscles found in the axillary region?
|
Anterior wall pec major and minor
Posterior wall- latissimus, subscapularis & teres major Medial wall – serratus anterior |
|
|
Serratus Anterior
|
Origin: Ribs 1-8
Insertion: Medial Border of Scapula Innervation: Long Thoracic n. (C6,7,8) Action --> Scapula Strong protractor (boxer’s) Rotation Help to hold the scapula |
|
|
What are the 4 rotator cuff muscles?
|
Supraspinatus
Infraspinatus Teres Minor Subscapularis |
|
|
What are the 6 scapulohumeral (intrinsic) muscles?
|
Deltoid
Supraspinatus Infraspinatus Teres Minor Subscapularis Teres Major |
|
|
Deltoid
|
Origin: Scapular Spine & Acromion & Lateral Clavicle
Insertion: Deltoid Tubercle (Humerus) Function (arm): Ant. part- flex, medial rotate Middle part- Abd after 150 Post. Part- extent, lateral rotate Innervation: Axillary n. (C5, 6) |
