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Page 1: Chapter11 musclespart2marieb

Pectoral Girdle Upper limb

Pelvic Girdle Lower Limb

Refer to the Handout (Appendicular Musculature) We will emphasize the larger and most

superficial muscles, and those that have a particularly important activity.

Ch 11 Muscles of the Body, Part 2Ch 11 Muscles of the Body, Part 2The Appendicular MusculatureThe Appendicular Musculature

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Anterior Thorax

Deltoid IM injection site

Pectoralis Major and minor

Serratus anterior

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Posterior ThoraxTrapeziusLatissimus dorsiSupraspinatusInfraspinatusSubscapularis

Triceps Long, lateral,

medial heads

Don’t forget the Rotator Cuff

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The Arm, AnteriorAspect

•Biceps Brachii•Two Heads•Origin: Coracoid and Supraglenoid tubercle•Insertion: Radial Tubercle

•Brachialis•Brachioradialis•Digital Flexors

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The Arm, Posterior

Aspect

•Triceps Brachii•Three Heads:

•Long•Lateral•Medial

•Carpal Extensors•Digital Extensors•Extensor retinaculum

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The Hand,Dorsal Aspect

•Extensor retinaculum

•Extensor tendons

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The Hand, Palmar Aspect

•Flexor Retinaculum AKA Transverse Carpal Ligament•Carpal Tunnel

•Irritates the median nerve

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Carpal Tunnel Syndrome

Usually idiopathic Rheumatoid arthritis Genetics RSI??

Swelling of the carpal tunnel compresses the median nerve

Pain, and motor and sensory loss may occur

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The Pelvis

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The Thigh:Anterior View

•Quadriceps Group (4 heads) converge as the Quadriceps Tendon

•Vastus Lateralis•Vastus Medialis•Rectus Femoris•Vastus intermedius

•Iliotibial Tract•Sartorius

•Longest muscle in body

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The Thigh:Posterior View

•Gluteal Group

•Gluteus maximus

•Gluteus medius

•Gluteus minimus

•Hamstrings

•Semimembranosus

•Semitendinosus

•Biceps femoris

•Iliotibial tract

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The Calf:Posterior View

•Gastrocnemius•Medial and lateral heads

•Soleus (Deep to Gastroc-)•Both insert on calcaneus

•Calcaneal (Achilles) tendon

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The Calf:Anterior View

•Tibialis Anterior•The “toe tapper”•Site of shinsplints

•Digital extensors•For the toes

•Extensor Retinaculum•Superior•Inferior

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Foot

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Surface Anatomy p 326

Both muscular and bony

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