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Muscles of the Lower Limb "Revision" Anatomy Team 434

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Muscles of the Lower Limb Muscles of the Lower Limb "Revision" Anatomy Team 434 Color Index: If you have any complaint or ▪ Important Points suggestion please don’t ▪ Helping notes hesitate to contact us on: [email protected] ▪ Explanation Muscles of gluteal (SUPERFICIAL) region Muscle ORIGIN INSERTION ACTION NERVE -Extension & Lateral rotation of Gluteus Back of sacrum, coccyx & iliotibial tract & Gluteal hip joint Inf. Gluteal nerve Maximus Sacrotuberous ligament tuberosity -Stabilizing femur on tibia through iliotibial tract Mid. Part of Gluteal surface Gluteus Medius Lateral greater trochanter of ileum -Abduction & medial rotation of hip joint Sup. Gluteal nerve Gluteus Ant. Part of Gluteal surface Ant. Part of greater -Prevent tilt of pelvis Minimus of ileum trochanter Muscles of gluteal (SUPERFICIAL) region All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of gluteal (DEEP) region Muscle ORIGIN INSERTION ACTION NERVE Pelvic surface of Mid. 3 Upper border of the greater Piriformis Anterior rami of S1, S2 sacral vertebrae trochanter Obturator Inner surface of the Mid. surface of the greater Internus sidewall of the pelvis trochanter Nerve to obturator internus Upper & lower parts into Superior Upper part of lesser sciatic tendon of obturator internus Gemelli notch Lateral Rotation of Hip joint Quadratus Lateral border of the ischial Quadrate tubercle & Femoris tuberosity intertrochanteric crest Nerve to Quadratus Upper & lower parts into Femoris Inferior Lesser part of lesser sciatic tendon of obturator internus Gemelli notch Muscles of gluteal (DEEP) region All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of thigh (HAMSTRING) region Muscle ORIGIN INSERTION ACTION NERVE -The long head is supplied by the tibial part of the - The long head from -Flexion of the knee sciatic the ischial tuberosity Biceps Femoris Head of the fibula -Lateral Rotation of flexed leg -The short head is - The short head from *Long Head: Extension of hip supplied by the common the linea aspera peroneal part of the sciatic -Flexion&medial rotation of the Semitendinosus Medial surface of tibia > SGS leg at knee joint -Exten. Of hip joint -It forms the Oblique Popliteal ligament Tibial portion of sciatic Ischial tuberosity Semimembranosus Medial condyle of tibia -Flexion & medial rotation of the nerve leg at knee joint -Exten. Of hip joint Ischial part of Adductor tubercle of the Exten. Of hip joint Adductor Magnus medial condyle of the femur Muscles of thigh (HAMSTRING) region All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of thigh (ANTERIOR) region Muscle ORIGIN INSERTION ACTION NERVE -Flexion, abduction & lateral Sartorius Anterior superior iliac spine Medial surface of tibia rotation of hip joint -Flexion of knee joint Pectineus Sup. Pubic ramus Back of femur Flexion & Adduction of hip joint Iliacus Iliac fossa Lesser trochanter Flexion of hip joint Psoas major T12 & lumbar vertebrae Femoral nerve -Rectus Femoris: Ant. Inf. Iliac spine -Patella -Vastus Medialis + Vastus Quadriceps -From patella to tibial Lateralis: Posterior border Extension of knee joint Femoris tuberosity through of femur ligamentum patellae -Vastus intermedialis: Front shaft of femur Muscles of thigh (ANTERIOR) region All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of thigh (ADDUCTOR) region Muscle ORIGIN INSERTION ACTION NERVE Adductor Body of pubis Longus Adductor Body of pubis & inferior Linea aspera Adduction of hip joint Brevis ramus Obturator nerve Adductor Magnus Inferior pubic ramus & ischial ramus Adduction of hip joint & flexion Gracilis Mid. Surface of tibia of knee joint Muscles of thigh (ADDUCTOR) region All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of Posterior Compartment of the leg (SUPERFICIAL) Muscle ORIGIN INSERTION ACTION NERVE -Lateral head lateral condyle of femur Plantar flexion at ankle joint Gastrocnemius -Medial head above medial Flexion knee joint condyle Post. Surface of calcaneus via. Tendocalcaneus Tibial portion of sciatic Powerful plantar flexor of ankle nerve Soleus Shaft of tibia & fibula joint; provides main propulsive force in walking and running Posterior surface of Plantar flexes foot at ankle joint; Plantaris Lateral ridge of femur calcaneus flexes knee joint Muscles of Posterior Compartment of the leg (SUPERFICIAL) All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of Posterior Compartment of the leg (DEEP) Muscle ORIGIN INSERTION ACTION NERVE Lateral surface of lateral Flexion of leg at knee joint & Post. Surface of shaft of tibia Popliteus condyle of femur unlocking the joint by lateral (above soleal line) (intracapsular) rotation of femur on tibia -Flexes distal phalanges of lateral four toes; Flexor digi. Post. Surface of shaft of Base of distal phalanx of -plantar Flexes foot at ankle longus tibia lateral 4 toes joint; -Supports medial and lateral longitudinal arches Tibial portion of sciatic -Flexion of big toe nerve Flexor hallucis Post. Surface of shaft of Base of distal phalanx of big -Plantar flexion at ankle joint longus fibula toe -Support medial longitudinal arche -Plantar flexion at ankle joint Post. Surface of tibia & Navicular tuberosity and -Invert foot at subtalar & Tibialis post. fibula & interosseous neighboring bones transverse tarsal joints memb -Support medial longitudinal arch Muscles of Posterior Compartment of the leg (DEEP) All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of Anterior Compartment of the leg Muscle ORIGIN INSERTION ACTION NERVE Lateral surface of shaft of -Extension at ankle joint Medial cuneiform & base of Tibialis Ant. tibia & interosseous -Inverts foot 1st metatarsal membrane -Holds medial long. Arch Extensor digi. Extensor expansion of 4 -Extension of toes longus lateral toes -Dorsi flexion at ankle joint Deep peroneal nerve Peroneus -Dorsi flexion at ankle joint Ant. Surface of shaft of Base of 5th metatarsal Tertius -Everts foot fibula -Dorsi flexion of ankle Extensor Base of distal phalanx of big -Extends big toe hallucis long. toe -Inverts foot Muscles of Anterior Compartment of the leg All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of Lateral Compartment of the leg Muscle ORIGIN INSERTION ACTION NERVE -Plantar flexion Medial cuneiform & base of -Everts foot Peroneus Long. 1st metatarsal -Support lateral long. & Lateral surface of shaft of Transverse arches Superficial peroneal nerve fibula -Plantar flexion Peroneus Base of 5th metatarsal -Everts foot Brevis -Support lateral long arch Muscles of Lateral Compartment of the leg (Peroneus Longus) (Peroneus Brevis) All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Continuation of the Tendons of Leg Muscles (Peroneus Longus) (Peroneus Brevis) All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of Foot Posterior Compartment 1st layer: 1. Abductor hallucis, 2. Flexor digitorum brevis, 3. Abductor digiti minimi 2nd layer: 1. Quadratus plantae 2. Lumbricals 3. Flexor digitorum longus tendon 4. Flexor hallucis longus tendon 3rd layer: 1. Flexor hallucis brevis 2. Adductor hallucis 3. Flexor digiti minimi brevis 4th layer: 1. Interossei, (3 plantar + 4 dorsal) 2. Peroneus longus tendon, 3. Tibialis posterior tendon All the pictures are taken from [ http://teachmeanatomy.info/ ] .. Muscles of Foot Dorsal Aspect Muscle ORIGIN INSERTION ACTION NERVE BLOOD SUPPLY Anterior Part of upper By four tendons into the Extensor surface of the proximal phalanx of big Deep & superficial Digitorum calcaneus and from Extension of toes Dorsalis Pedis toe and second, third, peroneal nerve Brevis inferior extensor and fourth toes retinaculum Done by: Noha AlGwaiz & Tariq AlHassan.
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