Anatomy study note · Lower limb

Plantaris

A small calf muscle with a very long, thin tendon; often absent.

Key points

• Lateral supracondylar ridge → calcaneum.
• Tibial nerve.
• Often absent; tendon used as a graft.
• Limb muscles: in situ from limb-bud mesenchyme.
• Upper limb bud C4–T2; lower limb bud L2–S2.
• Skeletal muscle: multinucleated, peripheral nuclei, striated.
• Epimysium → perimysium → endomysium.

The full note in the atlas also covers

Origin · Insertion · Action · Nerve supply · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 11, PDF pp. 1357–1358
• Inderbir Singh’s Human Embryology, ch. 7, PDF p. 109; ch. 10, PDF pp. 142–145
• BRS Cell Biology & Histology, 7th ed., ch. 8, PDF pp. 135–144

More from the lower limb

• Popliteal artery
• Popliteal lymph nodes
• Popliteal vein
• Popliteus
• Posterior cutaneous nerve of the thigh
• Posterior tibial artery
• Profunda femoris artery
• Quadriceps femoris
• Retinacula of the ankle
• Saphenous nerve
• Sartorius
• Sciatic nerve

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