HUMAN BODY COURSE LOWER LIMB NERVES AND VESSELSstajmir.com/hms/IN753.0-The_Human_Body/Anatomy Lower...
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HUMAN BODY COURSE
LOWER LIMB NERVES AND VESSELS
October 22, 2010
D. LOWER LIMB MUSCLES2 Lower limb compartments2. Lower limb compartments
ANTERIOR THIGH COMPARTMENT
G l f ti Hi fl i k t i th tiGeneral function: Hip flexion, knee extension, other motions
Muscles: Sartorius, quadriceps femoris (rectus femoris, vastus lateralis, vastus intermedius, vastus medialis)
Innervation: Femoral nerve
Blood supply: Femoral artery
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Blood supply: Femoral artery
D. LOWER LIMB MUSCLES2 Lower limb compartments2. Lower limb compartments
MEDIAL THIGH COMPARTMENT
G l f ti Hi dd ti th tiGeneral function: Hip adduction, other motions
Muscles: Gracilis, adductor longus, adductor brevis, adductor magnus, obturator externus
Innervation: Obturator nerve
Blood supply: Obturator artery and deep femoral artery perforating
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Blood supply: Obturator artery and deep femoral artery perforating branches
D. UPPER LIMB MUSCLES2 Lower limb compartments2. Lower limb compartments
POSTERIOR THIGH COMPARTMENT
G l f ti Hi t i k fl i th tiGeneral function: Hip extension, knee flexion, other motions
Muscles: Hamstring muscles (biceps femoris, semitendinosus, semimembranosus)
Innervation: Tibial nerve (except biceps femoris short head)
Blood supply: Deep femoral artery perforating branches
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Blood supply: Deep femoral artery perforating branches
D. LOWER LIMB MUSCLES2 Lower limb compartments2. Lower limb compartments
ANTERIOR CRURAL COMPARTMENT
General function: Ankle dorsiflexion, digital extension, others
Muscles: Tibialis anterior, extensor hallucis, extensor digitorum longus
Innervation: Deep fibular nerve
Blood supply: Anterior tibial artery
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D. LOWER LIMB MUSCLES2 Lower limb compartments2. Lower limb compartments
LATERAL CRURAL COMPARTMENT
General function: Ankle plantarflexion, intertarsal eversionp
Muscles: Fibularis longus, fibularis brevis
Innervation: Superficial fibular nerve
Blood supply: Fibular branch of posterior tibial artery
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D. LOWER LIMB MUSCLES2 Lower limb compartments2. Lower limb compartments
POSTERIOR CRURAL COMPARTMENT, Superficial group
l f i fl kl l fl hGeneral function: Knee flexion, ankle plantarflexion, other motions
Muscles: Gastrocnemius, plantaris soleus
Innervation: Tibial nerve
Blood supply: Posterior tibial artery
POSTERIOR CRURAL COMPARTMENT, Deep group
General function: Ankle plantarflexion, digital flexion, other motions
Muscles: Popliteus, flexor hallucis longus, tibialis posterior
Innervation: Tibial nerve
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Innervation: Tibial nerve
Blood supply: Posterior tibial artery
E. LOWER LIMB INNERVATION1 Femoral nerve1. Femoral nerve
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E. LOWER LIMB INNERVATION2 Obturator nerve2. Obturator nerve
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E. LOWER LIMB INNERVATION3 Tibial nerve3. Tibial nerve
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E. LOWER LIMB INNERVATION3 Fibular nerve3. Fibular nerve
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F. LOWER LIMB CIRCULATION1 Arterial supply1. Arterial supply
Continuations and branches of the EXTERNAL ILIAC ARTERY provide blood to the limb. Branches of the internal iliac artery supply the posterior hip region.
The FEMORAL ARTERY is the direct continuation of the external iliac artery inferior to the inguinal ligament. The DEEP FEMORAL ARTERY is a branch of g gthe femoral artery.
The POPLITEAL ARTERY is the direct continuation of the femoral artery distal to a hiatus in the adductor magnus muscle and within the popliteal fossa.
The ANTERIOR TIBIAL ARTERY and POSTERIOR TIBIAL ARTERY, the terminal branches of the popliteal artery, begin distal to the popliteal fossa and end in a single anastomosis the PLANTAR ARTERIAL ARCH in the footin a single anastomosis, the PLANTAR ARTERIAL ARCH, in the foot.
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F. LOWER LIMB CIRCULATION2 Venous and lymphatic drainage2. Venous and lymphatic drainage
Blood from deeper structures of the lower limb drains to DEEP VEINS accompanying arteries with the same names.
Blood from superficial structures of the lower limb drains to SUPERFICIAL VEINSwith no accompanying arteries. The superficial veins begin at the DORSAL VENOUS p y g p gARCH of the foot.
The GREAT SAPHENOUS VEIN leaves the tibial side of the dorsal arch and runs superiorly to join the femoral deep vein in the inguinal region.
The SMALL SAPHENOUS VEIN leaves the fibular side of the dorsal venous arch and runs superiorly to join the popliteal vein in the popliteal fossa.
LYMPH from the lower limb drains into lymphatic vessels travelling with both deep and superficial veins. Groups of nodes are found in the popliteal fossa and in the inguinal region.
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