Anterior Thigh Muscles (Exam 2) Flashcards
Fascia lata divides the thigh muscles into ___ compartments (intermuscular septum)
3
The saphaneous opening is covered with the __________ fascia of the lower limb
cribriform
The iliotibial tract is a broad band of fibers shared aponeurosis of tensor fascia latae muscle and ______________ muscles and attaches to the __________________ of the tibia
gluteus maximus, anterolateral tubercle
The _______ fascia of the leg (_______ fascia) is a continuation of the fascia lata of the thigh
deep, crural
The deep fascia of the leg (crural fascia) is a continuation of the fascia lata of the thigh. Distally, it forms the….
superior and inferior extensor retinaculum
The deep fascia of the leg (crural fascia) is a continuation of the fascia lata of the thigh. Distally, it forms the superior and inferior extensor retinaculum. It also gives rise to the _____________________ septa and ________________
anterior and posterior intermuscular, transverse intermuscular
What is the origin/proximal attachment for the pectineus?
superior ramus of the pubis
What is the insertion/distal attachment for the pectineus?
pectineal line of the femur, just inferior to the lesser trochanter
What innervates the pectineus?
femoral n. and potentially obturator n.
What are the actions of the pectineus?
-adducts and flexes thigh
-assists with medial rotation of the thigh
Which muscle is known as the tailor’s muscle and is the longest muscle in the body?
test q
sartorius
What is the origin/proximal attachment of the sartorius?
anterior superior iliac spine (ASIS) and superior part of the notch inferior to it
What is the insertion/distal attachment of the sartorius?
superior part of the medial surface of the tibia
What innervates the sartorius?
femoral n.
What are the actions of the sartorius?
-flexes, abducts, and laterally rotates thigh at the hip joint
-flexes leg at the knee joint
The 4 quadriceps femoris muscles are innervated by what nerve?
femoral n.
What are the 4 muscles that make up the quadriceps femoris?
1) rectus femoris
2) vastus lateralis
3) vastus medialis
4) vastus intermedius
The quadriceps is a __ joint muscle that _______ the leg
2, extends
The quadriceps is important for what?
-rising from a sitting or squatting position
-climbing or walking upstairs
-acceleration and projection (running and jumping when lifting body weight)
-3x stronger than the hamstrings
-active during the termination of the swing phase and absorbs jarring shock of the heel strike
The quadriceps distally form the quadriceps tendon where the patella ligament attaches to the….
tibial tuberosity
What do the vastus lateralis and medialis form and what is its function?
-forms medial and lateral retinaculum
-reinforces the joint capsule
-keeps patella aligned
What is the origin/proximal attachment of the rectus femoris?
anterior inferior iliac spine and ilium superior to acetabulum
What is the insertion/distal attachment of the rectus femoris?
-via common tendinous (quadriceps tendon) and independent attachments to the base of the patella
-indirectly via patellar ligament to the tibial tuberosity
What innervates the rectus femoris?
femoral n.
What are the actions of the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius?
-extend leg at knee joint
-steady hip joint
-help iliopsoas flex thigh
What muscle is known as the “kicking muscle”
test q
rectus femoris
The rectus femoris is susceptible to injury and avulsion from the ASIS when kicking a ball hence the name “kicking muscle”. It is also active during the preswing and initial swing phases of walking
Which quadriceps femoris muscle is the only one to cross the hip joint?
quiz 2 q
rectus femoris
A loss of function to which muscle will reduce thigh flexion up to 17%?
rectus femoris
Which one is the largest- vastus lateralis, vastus medialis, or vastus intermedius?
test q
vastus lateralis
What are the origins/proximal attachments of the vastus lateralis?
-greater trochanter of femur
-lateral lip of the linea aspera of the femur
What is the insertion/distal attachment for the vastus lateralis, vastus medialis, and vastus intermedius?
-via common tendinous (quadriceps tendon) and independent attachments to the base of the patella
-indirectly via the patellar ligament to the tibial tuberosity
-medial and lateral vasti also attach to tibia and patella via the aponeurosis (medial and lateral patellar retinacula)
What innervates the vastus lateralis?
femoral n.
What is the origin/proximal attachment of the vastus medialis?
intertrochanteric line and medial lip of the linea aspera of the femur
What innervates the vastus medialis?
femoral n.
What is the origin/proximal attachment for the vastus intermedius?
anterior and lateral surfaces of the shaft of the femur
What innervates the vastus intermedius?
femoral n.
Which muscle is a derivative of the vastus intermedius?
articularis genu
What is the origin/superior attachment of the articularis genu?
inferior part of the anterior aspect of the femur
What is the insertion/inferior attachment of the articularis genu?
to the synovial membrane of the knee joint and the wall of the suprapatellar bursa
What innervates the articularis genu?
femoral n.
What are the actions of the articularis genu?
pulls synovial membrane superior during extension of leg
