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Muscles / Legs

Semitendinosus (inner hamstring)

Legs · Lower body

Semitendinosus highlighted on a body map

How it works

OriginIschial tuberosity
InsertionMedial surface of the proximal tibia (pes anserinus)
Actions
  • Knee flexion
  • Hip extension
  • Internal rotation of the flexed knee
Anatomy reference: OpenStax Anatomy and Physiology (CC BY)

Coaching notes

One of the two medial hamstrings.

Say the muscle, not the group

Clients and interviewers both notice the difference between "semitendinosus" and a vague region name. Use the specific term and explain the action in plain language.

Best exercises for this muscle

No exercises tagged to this muscle yet.

Also trains this muscle as a secondary mover

Romanian deadlift