Posterior Thigh and Gluteal Region Flashcards
how many muscles are there in the posterior thigh compartment?
3
name the 3 muscles of the posterior thigh
biceps femoris
semitendinosus
semimembranosus
what is an alternative name for the posterior thigh muscles?
hamstrings
what is the general function of the hamstrings?
extension at hip, flexion at knee
which nerve innervates the posterior thigh?
sciatic nerve (L4-S3)
where can the common tendon of the biceps femoris be felt?
laterally at posterior knee
what are the attachments of the biceps femoris?
long head: ischial tuberosity, short head: linea aspera
both to head of fibula
what is the action of the biceps femoris?
flexion at knee
also, extension at hip, lateral rotation at hip and at knee
describe the innervation of the biceps femoris
long head = tibial part of sciatic nerve
short head = common fibular part of sciatic nerve
what are the attachments of semitendinosus?
ischial tuberosity to medial surface of tibia
what is the action of semitendinosus and semimembranosus?
flexion at knee
extension of thigh at hip
medially rotates thigh at hip and leg at knee
which is more superficial, semitendinosus or semimembranosus?
semitendinosus
what is the innervation of semitendinosus and semimembranosus?
tibial part of sciatic nerve
what are the attachments of semimembranosus?
ischial tuberosity to medial tibial condyle
how many muscles are there in the superficial gluteal region?
3
how many muscles are there in the deep gluteal region?
5
how many muscles are there in the gluteal region?
8
name the three superficial gluteal muscles
gluteus maximus, medius and minimus