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20 Cards in this Set
- Front
- Back
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Temporalis
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Action: Elevation of Mandible, retraction of mandible
Origin: Fossa of Temporal Bone Insertion: Coronoid Process and Ramus of Mandible Innervation: Trigeminal Nerve |
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Masseter
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Action: Elevation and Protraction of Mandible
Origin: Zygomatic Arch Inertion: External surface of angle and ramus of the Mandible Innervation: Trigeminal Nerve |
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Genioglossus
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Action: Protraction of Tongue
Origin: Mental Tubercle of Mandible Insertion: Blends with Musculature of the Tongue Innervation: Hypoglossal Nerve |
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Zygomaticus
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Action: Elevation of Corner of Mouth (Smile)
Origin: Zygomatic Bone Insertion: Blends with muscles at angle of mouth Innervation: Facial Nerve |
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Diaphragm
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Action: Dome of diaphragm flattens during inspirations, contraction increases vertical dimension of thoracic cavity
Origin: Sternal Part- Xyphoid Process Costal Part-ribs 5-10 and their costgal cartilages Lumbar Part- arcuate ligaments and L1-3 vertabral bodies Insertion: Central Tendon Innervation: Phrenic Nerve |
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Rectus Abdominus
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Action: Flexion of trunk, compression of anterior abdominal wall
Origin: Crest and symphysis of Pubis Insertion: Sternum (xiphoid process), costal cartilages 5-7 Innervation: Ventral Rami of T7-T12 spinal nerves |
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Latissimus Dorsi
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Action: Adduction of arm, extension of arm, medial rotation of arm
Origin: Sacral and lumbar spines via thoracolumbar fascia, illiac crest of illium via thoracolumbar fascia, ribs, spinous process, and inferior angle of scapula Insertion: Florr of intertubercular sulcas of the Humerus Innervation: Thoracodorsal Nerve |
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Sternocleidomastoid
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Action: Unilateral: rotation of head so face turns to opposite side-Bilateral: Flexion of head
Origin: Clavicle (medial) Sternum (manubrium) Insertion: Mastoid process of temporal bone, lateral one half of superior nuchal line of temporal bone Innervation: Accessory Nerve |
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Deltoid
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Action: Anterior Part- Flexion and medial rotation of arm- Lateral Part- abduction of arm- Posterior Part- Extension and lateral rotation of arm
Origin: Anterior Part- Clavicle- Lateral Part: Acromion of the Scapula- Posterior Part- Scapula (spine) Insertion: Humerus (deltoid tuberosity) Innervation: Axillary Nerve |
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Pectoralis Major
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Action: Adduction of arm, medial rotation of arm, clavicular head: flexion of arm, sternocostal head: extension of arm
Origin: Clavicular head- Clavicle (medial part), Sternocostal head- sternum, costal cartilages 1-6, and aponeurosis of external abdominal oblique muscle Insertion: Lateral lip of intertubercular sulcus of Humerus Innervation: Lateral pectoral nerve |
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Trapezius
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Action: Upper fibers- elevation of scapula and superior rotation of scapula, Middle fibers- retraction (adduction) of scapula, Lower fibers- depression of scapula
Origin: Superior nuchal line of Occipital Bone, Nuchal ligament, vertebra prominens, Spinous processes of T1-12 vertebrae Insertion: lateral Clavicle, Spine and acromion of Scapula Innervation: Accessory Nerve |
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biceps brachii
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Action: Supination of forearm, flexion of forearm, flexion of arm
Origin: Long head- scapula (superglenoid tubercle), Short head-scapula (coracoid Process) Insertion: Tendon- radius (tuberosity), Aponeurosis- deep fascia (proximal medial forearm) Innervation: Musculocutaneous Nerve |
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extensor carpi radialis
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Action: extension of wrist, abduction of hand
Origin: lateral condyle of humerus Insertion: metacarpal III Innervation: radial nerve |
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extensor carpi ulnaris
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Action: Extension of wrist, adduction of hand
Origin: humerus (lateral epicondyle), ulna (posterior shaft) Insertion: Metacarpal V Innervation: Radial Nerve |
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extensor digitorum
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Action: Extension of fingers 2-5, assists in extension of wrist
Origin: Lateral Condyle of Humerus Insertion: Extensor expansion (each expension attaches distally to the middle and distal phalanges of fingers 2-5) Innervation: Radial Nerve |
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flexor carpi radialis
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Action: Flexion of wrist, abduction of hand
Origin: Medial Epicondyle Humerus Insertion: Metacarpals II and III Innervation: Median Nerve |
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flexor carpi ulnaris
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Action: Flexion of wrist, adduction of hand
Origin: Humerus (medial epicondyle), Ulna (olecranon and posterior border of ulna) Insertion: Pisiform and hamate of Carpal bones, Metacarpal V Innervation: Ulnar Nerve |
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palmaris longus
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Action: Flexion of wrist, tense palmar aponeurosis
Origin: Medial Epicondyle of Humerus Insertion: Palmar aponeurosis Innervation: median nerve |
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pronator teres
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Action: Pronation of forearm
Origin: Humerus (medial epicondyle), ulna (coronoid process) Insertion: Lateral Mid-Shaft Radius Innervation: Median nerve |
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Triceps Brachii
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Action: extension of forearm, extension of arm
Origin: Long head: scapula, medial and lateral heads: shaft of humerus Insertion: Olecranon of Ulna Innervation: Radial Nerve |
