Lesson 15: Hamstrings and Adductors

by Brent Brookbush DPT, PT, MS, PES, CES, CSCS, ACSM H/FS

Hamstrings (Biceps femoris, semitendinosus and semimembranosus)

Study GuideQuick Reference - Hamstrings and Adductors

Note: If you intend to do the activities below do not open the "Study Guide" - all the answers are already filled in.  The study guide is just a quick reference tool, similar to flash cards.  Great for last-minute prep' before an exam.

Introduction:

In this lecture we will be discussing the Muscles of the Hamstrings and the Adductors:

Etymology:

  • Hamstrings

    • ham (n.1) "meat of a hog's hind leg used for food," 1630s, from Old English hamm "hollow or bend of the knee," from Proto-Germanic *hamma- (cognates: Old Norse höm, Middle Low German, Middle Dutch hamme, Old High German hamma), from PIE *konemo- "shin bone" (cognates: Greek kneme "calf of the leg," Old Irish cnaim "bone"). (Etymology Online)
    • string (n.) Old English streng "line, cord, thread, string of a bow or harp," in plural "tackle, rigging; lineage, race," from Proto-Germanic *strangiz (cognates: Old Norse strengr, Danish streng, Middle Dutch strenge, Dutch streng, Old High German strang, GermanStrang "rope, cord"), from *strang- "taut, stiff," from PIE root *strenk- "tight, narrow." (Etymology Online)
  • Semitendinosus and Semimembranosus

    • semi- before vowels sem-, word-forming element meaning "half, part, partly; partial, imperfect; twice," from Latin semi- "half," from PIE *semi- "half" (Etymology Online)
    • tendon (n.) 1540s, from Medieval Latin tendonem (nominative tendo), altered (by influence of Latin tendere "to stretch") from Late Latin tenon, from Greek tenon (genitive tenontos) "tendon, sinew," from PIE *ten-on- "something stretched," from root *ten- "to stretch" (Etymology Online).
    • membrane (n.) early 15c., "thin layer of skin or tissue," a term