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The hamstrings are innervated by the sciatic nerve, specifically by a main branch of it: the tibial nerve. (The short head of the biceps femoris is innervated by the common fibular nerve). The sciatic nerve runs along the longitudinal axis of the compartment, giving the cited terminal branches close to the superior angle of the popliteal fossa.
The three 'true' hamstrings cross both the hip and the knee joint and are therefore involved in knee flexion and hip extension. The short head of the biceps femoris crosses only one joint (knee) and is therefore not involved in hip extension. With its divergent origin and innervation, it is sometimes excluded from the 'hamstring ...
However, there is an inhibitory interneuron used to relax the antagonistic hamstring muscle (reciprocal innervation). This test of a basic automatic reflex may be influenced by the patient consciously inhibiting or exaggerating the response; the doctor may use the Jendrassik maneuver in order to ensure a more valid reflex test.
"Triggerfinger" is the ninth episode of the second season of the post-apocalyptic horror television series The Walking Dead. It originally aired on AMC in the United States on February 19, 2012. The episode was written by David Leslie Johnson and was directed by Billy Gierhart.
Eric Goldman at IGN gave the episode 9.3 out of 10, saying "this was another great episode for The Walking Dead and a strong end to this half of the season. In Season 3, The Walking Dead has turned into a show that is perhaps less grounded and “realistic”—in the midst of its genre scenario—than it once felt, but this is easily the most ...
Ron Hogan of Den of Geek gave the episode 4 out of 5 stars, writing that, "The Walking Dead hasn’t always done a good job of making villains well-rounded characters, but with the Whisperers, Angela Kang and company is doing a solid job of turning what would otherwise be a group of masked psychopaths into a Shakespearian drama company of back ...
Ken Tucker of Entertainment Weekly affirmed that the scene reestablished The Walking Dead to full form, as well as redeemed the season's "general gutlessness thus far." [23] HitFix's Alan Sepinwall reflected similar thoughts, and observed that it was effective enough to keep the viewers chattering until the succeeding episode. [24]
The quadriceps femoris muscle is subdivided into four separate muscles (the 'heads'), [1] [2] with the first superficial to the other three over the femur (from the trochanters to the condyles): The rectus femoris muscle occupies the middle of the thigh, covering most of the other three quadriceps muscles. [1] It originates on the ilium. It is ...