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Published byMeghan Dickerson Modified over 9 years ago
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Musculoskeletal Flash Cards Neck, trunk, & Pelvis
Prepared by: Feng-Yen Li Supervised by: Kim Topp
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Introduction Useful tips for usage:
These flashcards are meant to help you learn the movements of the muscles. They are most useful when you see how the movements makes sense in relation to the origin and insertion points. For exam purposes, you only need to know (memorize) the action, innervation, and arterial supply of each muscle. But Italicized = do not need to know for exam. The purple slides are summary slides (if applicable) of subsequent muscles. Use these to learn the common properties of groups of muscles. Information about each muscle is also listed in the notes section under each picture slide. The titles in table of contents are hyperlinked its slide, but you need to go into presentation mode to use the hyperlinks.
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Acknowledgements Special thanks go to:
Kim Topp for reviewing all the slides for validity. Daniel Orjuela and Paul Teresi for taking the cadaver pictures. UCSF 2006 Curriculum Ambassador Program for funding this project. UCSF 2006 Curriculum Ambassadors and Mentors for offering useful suggestions. Members of the UCSF Class of 2009 for inspiring and supporting me to do this project.
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Useful Websites Here are other useful sites to learn the muscles:
(shows each muscle in isolation) (has many nicely labeled cadaver pictures)
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Table of Contents Neck and Thorax Gluteal Region Scalenes
Sternocleidomastoid Levator Scapulae Splenius Pectoralis Major Pectoralis Minor Serratus Anterior Trapezius Rhomboid Latissimus Dorsi Teres Major Teres Minor Infraspinatus Supraspinatus Deltoids Gluteal Region Illiopsoas Gluteus Maximus Gluteus Medius Gluteus Minimus Piriformis Tensor Fasciae Latae
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Neck and Trunk
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Scalenes Origin Insertion anterior posterior middle anterior middle
Origin Cervical vertebrae Insertion First two ribs Action Flex + slightly rotate neck Innervation Anterior primary rami of C5, 6; (Rami and trunks of brachial plexus passes between anterior and middle scalenes) Arterial Supply (Subclavian vein passes anterior to anterior scalene; Subclavian artery passes posterior to anterior scalene) middle posterior
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Scalenes Origin Cervical vertebrae Insertion First two ribs
Action Flex + slightly rotate neck Innervation Anterior primary rami of C5, 6; (Rami and trunks of brachial plexus passes between anterior and middle scalenes) Arterial Supply (Subclavian vein passes anterior to anterior scalene; Subclavian artery passes posterior to anterior scalene)
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Sternocleidomastoid Insertion Origin Origin Manubrium, clavicle
Insertion Mastoid process Action flex + rotate head Innervation Accessory nerve (cranial nerve XI) Arterial Supply Sternocleidomastoid artery
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Sternocleidomastoid Origin Manubrium, clavicle
Insertion Mastoid process Action flex + rotate head Innervation Accessory nerve (cranial nerve XI) Arterial Supply Sternocleidomastoid artery
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Levator Scapulae Origin Insertion Origin Cervical vertebrae
Insertion Superior part of medial border of scapula Action Elevates scapula Innervation Dorsal scapula (C5) and cervical (C3 and C4) nerves Arterial Supply Dorsal scapular artery
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Levator Scapulae Origin Cervical vertebrae
Insertion Superior part of medial border of scapula Action Elevates scapula Innervation Dorsal scapula (C5) and cervical (C3 and C4) nerves Arterial Supply Dorsal scapular artery
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Splenius Origin Insertion Origin Thoracic vertebrae
Insertion Mastoid process Action Extends and rotates head and neck Innervation Dorsal rami Arterial Supply Muscular branch of occipital artery
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Splenius Origin Thoracic vertebrae Insertion Mastoid process
Action Extends and rotates head and neck Innervation Dorsal rami Arterial Supply Muscular branch of occipital artery
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Pectoralis Major Origin Insertion
Origin Clavicle, sternum, 6th costal cartilage Insertion humerus Action Flexes, adducts, + medially rotates arm Innervation Medial and lateral pectoral nerves Arterial Supply pectoral branch of the thoracoacromial trunk
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Pectoralis Major Origin Clavicle, sternum, 6th costal cartilage
Insertion humerus Action Flexes, adducts, + medially rotates arm Innervation Medial and lateral pectoral nerves Arterial Supply pectoral branch of the thoracoacromial trunk
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Pectoralis Minor Insertion Origin Origin 3rd to 5th ribs
Insertion coracoid process Action Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall Innervation Medial pectoral nerves; clavicular head (C8 and T1) Arterial Supply Pectoral branch of the thoracoacromial trunk
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Pectoralis Minor Origin 3rd to 5th ribs Insertion coracoid process
Action Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall Innervation Medial pectoral nerves; clavicular head (C8 and T1) Arterial Supply Pectoral branch of the thoracoacromial trunk
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Serratus Anterior Origin Insertion Origin Ribs Insertion Scapula
Action protract + superiorly rotate scapula Innervation long thoracic nerve Arterial Supply lateral thoracic artery
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Serratus Anterior Origin Ribs Insertion Scapula
Action protract + superiorly rotate scapula Innervation long thoracic nerve Arterial Supply lateral thoracic artery
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Trapezius Insertion Origin Origin thoracic/cervical vertebrae, occiput
Insertion clavicle, acromion, + spine of scapula Action elevate, retract, depress, + superiorly rotate scapula Innervation Accessory nerve (CN XI) Arterial Supply Transverse cervical artery
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Trapezius Origin thoracic/cervical vertebrae, occiput
Insertion clavicle, acromion, + spine of scapula Action elevate, retract, depress, + superiorly rotate scapula Innervation Accessory nerve (CN XI) Arterial Supply Transverse cervical artery
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Rhomboid Origin Insertion Origin thoracocervical vertebrae
Insertion Medial border of scapula Action Retract + inferiorly rotate scapula Innervation Dorsal scapular nerve (C4, C5) Arterial Supply Dorsal scapular artery Insertion
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Rhomboid Origin thoracocervical vertebrae
Insertion Medial border of scapula Action Retract + inferiorly rotate scapula Innervation Dorsal scapular nerve (C4, C5) Arterial Supply Dorsal scapular artery
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Latissimus Dorsi Insertion Origin
Origin Thoracolumbar fascia, thoracic vertebra, illiac crest, ribs Insertion humerus Action Extends, adducts, and medially rotates humerus; raises body toward arms during climbing Innervation Thoracodorsal nerve (C6, C7, and C8) Arterial Supply Thoracodorsal artery Origin
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Latissimus Dorsi Origin Thoracolumbar fascia, thoracic vertebra, illiac crest, ribs Insertion humerus Action Extends, adducts, and medially rotates humerus; raises body toward arms during climbing Innervation Thoracodorsal nerve (C6, C7, and C8) Arterial Supply Thoracodorsal artery
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Teres Major Origin Insertion Origin Inferior angle of scapula
Insertion Humerus Action Adducts and medially rotates arm; assist arm extension Innervation Lower subscapular nerve (C6 and C7) Arterial Supply Subscapular and circumflex scapular arteries Insertion
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Teres Major Origin Inferior angle of scapula Insertion Humerus
Action Adducts and medially rotates arm; assist arm extension Innervation Lower subscapular nerve (C6 and C7) Arterial Supply Subscapular and circumflex scapular arteries
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Teres Minor Origin Insertion Origin Lateral border of scapula
Insertion Greater tuberosity of humerus Action Laterally rotate arm; hold humeral head in glenoid fossa Innervation Axillary nerve (C5 and C6) Arterial Supply Subscapular and circumflex scapular arteries Insertion
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Teres Minor Origin Lateral border of scapula
Insertion Greater tuberosity of humerus Action Laterally rotate arm; hold humeral head in glenoid fossa Innervation Axillary nerve (C5 and C6) Arterial Supply Subscapular and circumflex scapular arteries
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Infraspinatus Origin Insertion Origin Medial border of scapula
Insertion Greater tuberosity of humerus Action Laterally rotate arm; helps to hold humeral head in glenoid fossa Innervation Suprascapular nerve (C5 and C6) Arterial Supply Suprascapular and circumflex scapular arteries
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Infraspinatus Origin Medial border of scapula
Insertion Greater tuberosity of humerus Action Laterally rotate arm; helps to hold humeral head in glenoid fossa Innervation Suprascapular nerve (C5 and C6) Arterial Supply Suprascapular and circumflex scapular arteries
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Supraspinatus Origin Insertion Origin Supraspinous fossa of scapula
Insertion Greater tuberosity of humerus Action Initiates and assists deltoid in abduction Innervation Suprascapular nerve (C4, C5 and C6) Arterial Supply Suprascapular artery
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Supraspinatus Origin Supraspinous fossa of scapula
Insertion Greater tuberosity of humerus Action Initiates and assists deltoid in abduction Innervation Suprascapular nerve (C4, C5 and C6) Arterial Supply Suprascapular artery
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Subscapularis Origin Insertion Origin Subscapular fossa of scapula
Insertion Lesser tuberosity of humerus Action Medially rotates arm and adducts it; helps to hold humeral head in glenoid cavity. Innervation Upper and lower subscapular nerves (C5, C6 and C7) Arterial Supply Subscapular artery
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Subscapularis Origin Subscapular fossa of scapula
Insertion Lesser tuberosity of humerus Action Medially rotates arm and adducts it; helps to hold humeral head in glenoid cavity. Innervation Upper and lower subscapular nerves (C5, C6 and C7) Arterial Supply Subscapular artery
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Deltoids Origin Insertion
Origin clavicle, acromion, and spine of scapula Insertion humerus Action All movements of arm except adduction Innervation Axillary nerve (C5 and C6) Arterial Supply anterior and posterior circumflex humeral arteries Insertion
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Deltoids Origin clavicle, acromion, and spine of scapula
Insertion humerus Action All movements of arm except adduction Innervation Axillary nerve (C5 and C6) Arterial Supply anterior and posterior circumflex humeral arteries
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Gluteal Region
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Iliopsoas Origin Insertion Origin Lumbar vertebrae and iliac fossa
Insertion Lesser trochanter of femur Action Flex the torso and thigh with respect to each other; flex the thigh at the hip joint Innervation Psoas: lumbar plexus; L1-4 Iliacus: femoral nerve (L2-4) Arterial Supply Internal iliac artery
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Iliopsoas Origin Lumbar vertebrae and iliac fossa
Insertion Lesser trochanter of femur Action Flex the torso and thigh with respect to each other; flex the thigh at the hip joint Innervation Psoas: lumbar plexus; L1-4 Iliacus: femoral nerve (L2-4) Arterial Supply Internal iliac artery
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Gluteus Maximus Origin Insertion Origin Sacrum and pelvis
Insertion Femur and iliotibial band to tibia Action Major extensor of thigh at hip joint Innervation Inferior gluteal nerve (L5, S1, S2) Arterial Supply Inferior and superior gluteal arteries
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Gluteus Maximus Origin Sacrum and pelvis
Insertion Femur and iliotibial band to tibia Action Major extensor of thigh at hip joint Innervation Inferior gluteal nerve (L5, S1, S2) Arterial Supply Inferior and superior gluteal arteries
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Gluteus Medius Origin Insertion
Origin Dorsal ilium inferior to iliac crest Insertion Greater trochanter Action Major abductor of thigh; rotate thigh medially and laterally Innervation Superior gluteal nerve (L4, L5, S1) Arterial Supply Superior gluteal artery
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Gluteus Medius Origin Dorsal ilium inferior to iliac crest
Insertion Greater trochanter Action Major abductor of thigh; rotate thigh medially and laterally Innervation Superior gluteal nerve (L4, L5, S1) Arterial Supply Superior gluteal artery
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Gluteus Minimus Origin Insertion
Origin Dorsal ilium between inferior and anterior gluteal lines Insertion Greater trochanter Action Abducts and medially rotates the thigh Innervation Superior gluteal nerve (L4, L5, S1) Arterial Supply Superior gluteal artery
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Gluteus Minimus Origin Dorsal ilium between inferior and anterior gluteal lines Insertion Greater trochanter Action Abducts and medially rotates the thigh Innervation Superior gluteal nerve (L4, L5, S1) Arterial Supply Superior gluteal artery
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Piriformis Origin Insertion Origin Sacrum Insertion Greater trochanter
Action Lateral rotator of the hip joint; also helps abduct the hip if it is flexed Innervation Piriformis nerve (S1, S2) Arterial Supply Superior and inferior gluteal and internal pudendal arteries
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Piriformis Origin Sacrum Insertion Greater trochanter
Action Lateral rotator of the hip joint; also helps abduct the hip if it is flexed Innervation Piriformis nerve (S1, S2) Arterial Supply Superior and inferior gluteal and internal pudendal arteries
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Tensor Fasciae Latae Origin Insertion Origin ASIS
Insertion Iliotibial band to tibia Action Helps stabilize and steady the hip and knee joints by putting tension on the iliotibial band of fascia Innervation Superior gluteal nerve (L4, L5, S1) Arterial Supply Superior gluteal and lateral circumflex femoral artery Insertion
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Tensor Fasciae Latae Origin ASIS Insertion Iliotibial band to tibia
Action Helps stabilize and steady the hip and knee joints by putting tension on the iliotibial band of fascia Innervation Superior gluteal nerve (L4, L5, S1) Arterial Supply Superior gluteal and lateral circumflex femoral artery
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