A&P Quiz 7 Flashcards
Which head of BICEPS FEMORIS is the DEEPEST?
Short Head
What are the Hamstring muscles?
Lateral: Biceps Femoris
Middle: Semitendinosus
Medial: Semimembranosus
What is the origin/proximal of biceps femoris
LH: Ischial Tuberosity (superficial)
SH: Linea Aspera (deepest)
What is the Insertion/Dorsal of Biceps Femoris
Head of Fibula
What are the Actions of Biceps Femoris
Both heads:
Flexion of the knee (tibiofemoral joint)
LH: Extension of the hips (Acetabulofemoral joint)
Origin/Proximal of Semitendinosus
Ischial Tuberosity
Semitendinosus is attached to the
“goose foot” - Pes Anserinus
Insertion/Dorsal of Semitendinosus
The proximal shaft of the Anterior Tibia - Pes Anserines
What is the Origin/Proximal of Semimembranosus
Ischial Tuberosity
Insertion/Dorsal of Semimembranosus
Posterior aspect of the medial condyle of the Tibia
Sarcolemma
Plasma membrane of a muscle fiber
Where are the myofilaments located
Inside the myofibril
What is one of the 1st steps of muscle fiber contraction (EXCITATION)
ACh is released and floods the synaptic cleft NMJ
What is Eccentric Isotonic Contraction
Movement that results in LENGTHENING of the muscle fibers
Know where the Spinous Process of a Vertebra is
Center spiny protrution
Know where the Transverse Process is located on a vertebra
Sides - angled protrusions
Know the sections of the hip bone
Ilium Iliac Crest Ischium Ischial Tuberosity Pubis