21

SKELETAL MUSCULAR SYSTEM / LOWER LIMB

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Fibula

ATTACHMENT SITES

DEEP VIEW

"he muscles of the posterior leg are arranged into two compartments separated by a rasciai seotum (deep transverse fascia, not shown) The superfictal group (gastrocnemius. soleus ś.nd plantaris) mserts by way of a common tendon. tendocalcaneus (Achilles tendon; see : ossary). These fascial compartments are fairly melastic. Muscle swelling secondary to . ascular insufficiency can result n serious muscle comoression death (compartment i.ndrome) in the absence of fascial surgical) decompression

*ne major calf muscle is gastrocnemius. which :lexes the knee and with its two fellows plar-•srriexes the ankle joint. :n knee ilexion it is aided bypcpiiteus, which also rotates tfie tibia ~edially. The other deep flexors oiantarfiex the ankle joint (bcth toe and great toe fiexors and Ubialis posterior). flex the toes (the flexors). and invert the foot (tibiaiis posteriori

66

CN: The muscles to be colored on this piąte are labeled G-M; any other letter label found here (A-F frorn PI. 65. N-Y from PI 67) is tor dentitication only, and those muscles shouid be lett uncolored. You may repeat colors used tor muscles on Platę 57 on this and/or the next piąte. (1) Color one muscle at a time m each ot the posterior views Notę that the olantaris (K), the soleus (L), and the gastrocnemius {M) all insert into the same tendon (tendocalcaneus), which receives the color M. (2) Color the upper and lower medial views.

SetnilenOmosus

Semi-

mombranosus Gracilis Sartorius

POSTERIOR

VIEW

(right leg)

riexr»r retiracuum

Caicaneus