Muscles 2
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Muscles 2 - Marcador
Muscles 2 - Detalles
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52 preguntas
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| Pectoralis Major | Origin: Costal Cartilages 1-6, Sternum, Medial Clavicle Insertion: (inferior to ) greater Tubercle Action: Adducts, medially rotates and flexes the Humerus at the shoulder Innervation: Brachial Plexus |
| Pectoralis Minor | Origin:Sternal ends of Ribs 3-5 Insertion: Coracoid Process of Scapula Action: Depresses Scapula Innervation: Brachial Plexus |
| Trapezius | Origin: Occipital bone and Spinous Process (cervical and thoracic) Insertion: Spine and Acromion Process (of scapula, clavicle) Action: superior- elevates scapula (shrugging), Medial- Adduction/retraction of scapula, inferior: Depress scapula Innervation: Accessory Nerve (Cranial Nerve Xl) |
| Sternocleidomastoid | Origin: Manubrium of sternum and clavicle Insertion: Mastoid Process (temporal Bone) Action: flexes neck in direction of contracting muscles (unilaterally), flexes neck (bilaterally) Innervation: Accessory Nerve (Cranial Nerve Xl) |
| Serratus Anterior | Origin: Outer Surface of Upper Ribs Insertion: Medial Border of Scapula Action: Depresses and protrudes Scapula Innervation: Brachial Plexus |
| Rhomboideus | Origin: Spinous Process of C7-T5 Insertion: Medial Border of Scapula Action: Elevates and adducts Scapula Innervation: Brachial Plexus |
| Levator Scapulae | Origin: Transverse Processes of C1-C4 Insertion: Medial Border of Scapula Action: Elevates scapula, extends neck (when scapula is fixed) Innervation: Ventral Rami of Spinal Nerves C3, C4 |
| Latissimus Dorsi | Origin: Spinous Processes of Lower thoracic Lumbar, and sacral Vertebrae, Iliac crest, and lower ribs Insertion: Intertubercular Groove, lesser Tubercle (Humerus) Action: Extends, adducts and medially rotates humerus at the shoulder. Innervation: Brachial Plexus |
| Teres Major | Origin: Lateral Border of Scapula Insertion: Lesser Tubercle of Humerus Action: Extends, adducts, and medially rotates humerus at the shoulder Innervation: Brachial Plexus |
| Sub Scapularis | Origin: Ventral Surface of Scapula Insertion: Lesser Tubercle of Humerus Action: Adducts and medially rotates humerus at the shoulder Innervation: Brachial Plexus |
| Supraspinatus | Origin: Supraspinous fossa of Scapula Insertion: Greater Tubercle of Humerus Action: Abducts Humerus at the shoulder Innervation: Brachial Plexus |
| Infraspinatus | Origin: Infraspinous fossa of scapula Insertion: Greater Tubercle of Humerus Action: Laterally rotates the humerus at the shoulder Innervation:Brachial Plexus |
| Deltoideus | Origin: Spine and Acromion Process of Scapula and Lateral Clavicle Insertion: Deltoid Tuberosity Action: Abducts, flexes, and extends, medially and laterally rotates humerus at shoulder (Literally everything BUT adducts) Innervation: Axillary Nerve (major nerve of the Brachial Plexus) |
| Teres Minor | Origin: Lateral border of Scapula Insertion: Posterior Tubercle of the Humerus Action: Laterally rotates Humerus at the shoulder Innervation: Axillary Nerve (major nerve of brachial Plexus) |
| Triceps Brachii (Long Head) | Origin: Inferior Margin of Glenoid Fossa Scapula Insertion: Olecranon Process of Ulna Action: Extends Forearm at elbow Innervation: Radial Nerve (major nerve of the brachial Plexus) |
| Triceps Brachii (Medial Head) | Origin: Posterior Surface of Humeral Shaft Insertion: Olecranon Process of Ulna Action: Extends Forearm at elbow Innervation: Radial Nerve (major nerve of the brachial Plexus) |
| Triceps (Lateral Head) | Origin: Posterior Surface of Humeral Shaft Insertion: Olecranon Process of Ulna Action: Extends Forearm at elbow Innervation: Radial Nerve (major nerve of the brachial Plexus) |
| Coracobrachialis | Origin: Coracoid Process Insertion: Medial Humerus (Middle) Action: Adducts and Flexes Humerus at the Shoulder Innervation: Musculocutaneous Nerve |
| Brachialis | Origin: Anterior Humerus Insertion: Coronoid Process and Ulnar Tuberosity Action: Flexes Forearm at the Elbow Innervation: Musculocutaneous Nerve |
| Biceps Brachii (Long Head) | Origin: Upper Margin of Glenoid Fossa of Scapula Insertion: Radial Tuberosity Action: Flexes Humerus at shoulder, Flexes Forearm at elbow, and supinates hand Innervation: Musculocutaneous Nerve |
| Biceps Brachii (Short Head) | Origin: Coracoid Process (Scapula) Insertion: Radial Tuberosity Action: Flexes Humerus at Shoulder, Flexes Forearm at elbow, Supinates Hand Innervation: Musculocutaneous Nerve (Major Nerve of Brachial Plexus) |
| Pronator Teres | Origin: MEH Insertion: Lateral Radius (mid shaft) Action: Pronates Hand Innervation: Median Nerve |
| Flexor Carpi Radialis | Origin: MEH Insertion: Metacarpals 2-3 Action: Flexes and abducts hand at wrist Innervation: Median Nerve |
| Palmaris Longus | Origin: MEH Insertion: Palmar Aponeurosis Action: Flexes had at wrist Innervation: Median Nerve |
| Flexor Carpi Ulnaris | Origin: MEH Insertion:Base of Metacarpal 5, Hamate, and Pisiform Action: Flexes and Adducts hand at wrist Innervation: Ulnar Nerve |
| Flexor Digitorum Superficialis (FDS) | Origin: MEH Insertion: Middle Phalanges of Digits 2-5 Action: Flexes had at wrist, and fingers (first joint of finger) Innervation: Median Nerve |
| Flexor Digitorum Profundus (FDP) | Origin: Proximal Ulna and Interosseous Membrane Insertion: Distal Phalanges 2-5 Action: Flexes had at wrist and flexes fingers (Furthest finger joint) Innervation: Median nerve (Lateral Half), and Ulnar Nerve (Medial Half) |
| Flexor Pollicis Longus | Origin: Middle Radius and Interosseous Membrane Insertion: Distal Phalanx of the Thumb Action: Flexes the Thumb Innervation: Median Nerve (major nerve of the Brachial Plexus) |
| Pronator Quadratus | Origin: Medial surface of distal Ulna Insertion: Distal Radius Action: Pronates hand Innervation: Median Nerve (Major nerve of the Brachial Plexus) |
| Brachioradialis | Origin: Lateral Supracondylar Ridge of Humerus Insertion: Styloid Process of Radius Action: Flexes Forearm at elbow, Supinates and pronates Innervation: Radial Nerve |
| Extensor Carpi Radialis Longus | Origin: Supracondylar Crest and LEH Insertion: Base of Metacarpal 2 Action: Extends and abducts hand at wrist Innervation: Radial Nerve |
| Extensor Carpi Radialis Brevis | Origin: LEH Insertion: Base of Metacarpal 3 Action: Extends hand at the wrist Innervation: Radial Nerve |
| Extensor Carpi Ulnaris | Origin: LEH Insertion: Base of metacarpal 5 Action: Extends and Adducts the hand at the wrist Innervation: Radial Nerve |
| Extensor Digitorum | Origin: LEH Insertion: Distal Phalanges of fingers 2-5 Action: Extends fingers and hand at wrist Innervation: Radial Nerve |
| Extensor Digiti Minimi | Origin: LEH Insertion: Distal Phalanx of finger 5 Action: Extends pinky Innervation: Radial Nerve |
| Supinator | Origin: LEH Insertion: Proximal Radius Action: Supinates forearm Innervation: Radial Nerve |
| Abductor Pollicis Longus | Origin: Posterior Radius and ulna (Posterior Interosseus Membrane) Insertion: Base of Metacarpal 1 Action: Abducts and extends the thumb Innervation: Radial Nerve |
| Extensor Pollicis Brevis | Origin: Radius and Interosseous Membrane Insertion: Proximal phalanx of thumb Action: Extends the thumb and abducts the hand Innervation: Radial Nerve |
| Extensor Pollicis Longus | Origin: Ulna and Interosseus membrane Insertion: distal phalanx of thumb Action: Abducts hand and extends thumb Innervation: Radial Nerve |
| Extensor Indicis | Origin: Ulna and interosseus Membrane Insertion:Dorsal surface of index finger Action: Extends index finger Innervation: Radial Nerve |
| Buccinator | Compresses cheek against teeth (Facial Nerve-Cranial nerve VII) |
| Corrugator Supercilii | Draws brows together and down (Facial Nerve-Cranial nerve VII) |
| Mentalis | Wrinkles Chin (pouting) (Facial Nerve-Cranial nerve VII) |
| Frontalis | Raises eyebrows (wrinkles forehead) (Facial Nerve-Cranial nerve VII) |
| Levator Labii Superioris | Raises Upper Lip (Facial Nerve-Cranial nerve VII) |
| Depressor Labii Inferioris | Depresses lower lip (Facial Nerve-Cranial nerve VII) |
| Orbicular Oris | Primarily closes and purses lips (when all fibers contract it makes kiss face) (Facial Nerve-Cranial nerve VII) |
| Orbicularis Oculi | Closes the eyelids (Facial Nerve-Cranial nerve VII) |
| Risorius | Pulls corners of the lips laterally (Facial Nerve-Cranial nerve VII) |
| Zygomaticus | Raises corner of lips (Smiling) (Facial Nerve-Cranial nerve VII) |
| Temporalis | Elevates and retracts mandible Trigeminal Nerve (Cranial nerve V) |
| Masseter | Elevates Mandible Trigeminal Nerve (Cranial nerve V) |