Difference between revisions of "MUSCLES-HAMSTRINGS"
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[[Summary Article| | ===== [[Summary Article|'''SUMMARY''']] ===== | ||
<b><i>'SM' - 2 'semi' muscles inserted medially</i></b> | |||
<br/>1. SEMIMEMBRANOSUS - arises from the ischeal tuberosity. Has a characteristic cross-sectional shape. The sciatic nerve lies a finger's breath from its lateral margin (on the adductor magnus). The flat tendon passes deep to the SEMITENDINOSUS + LONG HEAD OF THE BICEPS. It inserts into the back of medial condyle of the tibia. From this insertion, 3 expansions diverge. | <br/>1. SEMIMEMBRANOSUS - arises from the ischeal tuberosity. Has a characteristic cross-sectional shape. The sciatic nerve lies a finger's breath from its lateral margin (on the adductor magnus). The flat tendon passes deep to the SEMITENDINOSUS + LONG HEAD OF THE BICEPS. It inserts into the back of medial condyle of the tibia. From this insertion, 3 expansions diverge. | ||
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<br/>2. SEMITENDINOSUS - arises from the medial facet of the ischeal tuberosity. The tendon inserts behind the gracilis <i>(as part of the Pes Anserinus) | <br/>2. SEMITENDINOSUS - arises from the medial facet of the ischeal tuberosity. The tendon inserts behind the gracilis <i>(as part of the Pes Anserinus) </i>into the subcutaneous surface of the proximal tibia. | ||
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<br/><b><i>'BL' - 2 biceps muscles inserted laterally</i></b> | <br/><b><i>'BL' - 2 biceps muscles inserted laterally</i></b> | ||
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<br/><i>5. Nerve supply - sciatic n.</i> | <br/><i>5. Nerve supply - sciatic n.</i> | ||
<br/><i>[[Image:paste-5579162518026.jpg]]</i> | <br/><i>[[Image:paste-5579162518026.jpg]]</i> | ||
==Reference(s)== | ==Reference(s)== | ||
Latest revision as of 11:29, 1 January 2023
SUMMARY
'SM' - 2 'semi' muscles inserted medially
1. SEMIMEMBRANOSUS - arises from the ischeal tuberosity. Has a characteristic cross-sectional shape. The sciatic nerve lies a finger's breath from its lateral margin (on the adductor magnus). The flat tendon passes deep to the SEMITENDINOSUS + LONG HEAD OF THE BICEPS. It inserts into the back of medial condyle of the tibia. From this insertion, 3 expansions diverge.
2. SEMITENDINOSUS - arises from the medial facet of the ischeal tuberosity. The tendon inserts behind the gracilis (as part of the Pes Anserinus) into the subcutaneous surface of the proximal tibia.
'BL' - 2 biceps muscles inserted laterally
3. BICEPS FEMORIS - so-called because it possesses 2 heads. Long head - arises from the medial facet of the ischeal tuberosity. Short head - linea aspera + upper part of the lateral supracondylar line. Both fuse to be inserted into the head of the fibula + across the tib/fib joint.
4. Blood supply to the hamsrings - inferior gluteal a. + profunda femoris a. + popliteal a.
5. Nerve supply - sciatic n.
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.
