anterior thigh muscles

where does the vastus intermedius muscle insert?

it's tendon engulfs the patella and then inserts on the tibial tuberosity.

what's the action of the vastus intermedius muscle?

Action. The main function of the vastus intermedius is extension of the knee.

what is unique about the rectus femoris muscle? and what's the result?

it's the only quad muscle that will cross the hip joint, so it's a weak hip flexor. this muscle is a biarticulate, meaning it passes over two joints the hip joint and the knee joint.

what is the action/function of the rectus femoris muscle?

The rectus femoris is a biarticulate muscle, meaning it passes over two joints: the knee and hip. Its main function is as a knee extender; however, the proximal attachment at the anterior inferior iliac spine and the acetabulum allows for this muscle to act as a hip flexor as well.

how many anterior thigh muscles are there and what are their names?

6 anterior thigh muscles: sartorius muscle pectineus muscle vastus lateralis muscle rectus femoris muscle vastus medialis muscle vastus intermedius muscle

where are all the 4 quads (vastus lateralis, vastus medialis, vastus intermedius muscles and the rectus femoris muscle) going to attach?

all 4 quads are going to attach to the tibial tuberosity.

what are the actions of al the quadriceps muscles?

all the quadriceps muscles are going to extend/straighten/rise the knee except for the sartorius and pectineal muscle.

where does the vastus lateralis muscle insert?

courses down and it's tendon engulfs the patella and then inserts on the tibial tuberosity.

what is the action of the vastus medialis muscle?

extends the knee, together with the other muscles tat makes up the quadriceps femoris.

what is the main action/function of the pectineal muscle?

hip joint: thigh flexion, thigh abduction thigh external rotation, thigh internal rotation, pelvis stabilization.

what is the patella?

is a small bone located in front of the knee joint where the thigh bone (femur) and shin bone (tibia) meet. it protects the knee and connects the muscles in the front of the thigh to the tibia.

which femoral nerve has the most emphasis innervating the quads that extend the knee?

the emphasis is on L4.

where does the pectineus muscle arise from?

the pectineus muscle arises from the superior pubic ramus (pectineal line of the pubic) and to the slight extend from the surface of the bone in front of it.

where does the rectus femoris muscle insert?

the rectus femoris muscle courses down as with vastus lateralis, the tendon of the rectus femoris muscle engulfs the patella and then insert on the tibial tuberosity.

which muscle is the longest muscle in the human body?

the sartorius muscle.

what is the action of the vastus lateralis muscle?

the specific task of the vastus lateralis is to extend the lower leg which is the tibia and allows the body to rise up from a squatting position.

what's the innervation of the vastus intermedius muscle?

the vastus intermedius muscle is innervated by a branch of the femoral nerve, orginating from the lumbar nerve 2, 3 and 4 nerve roots. (l2 L 3 L4).

true/false: all the ANTERIOR THIGH muscles (not just quadriceps cause the sartorius and pectineal muscles are also included) are innervated by the femoral nerve L2 L3 L4 spinal cord levels.

true.

where does the vastus medialis muscle insert?

vastus medialis muscle then courses all the way down and it's tendon then engulfs the patella and then attaches to the tibial tuberosity.

how does the vastus lateralis muscle get it's name?

vastus= because it's a big muscle/ the muscle is big lateralis = because the muscle is located lateral.

where does the sartorius muscle arise from?

originates by the round tendon from the anterior superior iliac spine and upper half of the notch between the anterior superior iliac spine and anterior inferior superior spine.

how does the rectus femoris muscle get it's name?

rectus= straight and it's a big muscle in front of the femur.

what are the anterior muscles known as and which parts?

the 4 quadriceps - vastus lateralis muscle - vastus medialis muscle - vastus intermedius muscle - rectus femoris muscle

where is the tibial tuberosity located?

the bump in front of the tibia. the tibial tuberosity is an elevation on the proximal anterior aspect of the tibia, just below where the anterior surfaces of the lateral and medial tibial condyles end.

whats the innervation of the vastus medialis muscle?

the femoral nerve ( L2 L3 L4).

what is the innervation of the rectus femoris muscle?

the femoral nerve (L2 L3 L4)

what nerve innervates the pectineal muscle?

the femoral nerve (L2 and L3).

what nerve innervates the sartorius muscle?

the femoral nerve (L3, L4).

what is the clinically relevant aspect of the femoral nerve?

the main focus is the quadriceps fomoris muscle. so innervating the quads the ones that are part of forming the L4 myotome. the L4 level of the femoral nerve going to quadricpes that extends the knee is where the emphasis is at.

describe the origin of the femoral nerve?

the motor neurons in the ventral horns, nd these motor neurons are going to course out of the ventral rami and unite to form the femoral nerve, and the femoral nerve is going to innervate all the anterior thigh muscles.

what is the innervation for the vastus lateralis muscle?

the muscular branches of femoral nerve (L2 L3 L4).

where does the pectineal muscle inserts?

the pectineal muscle inserts to the pectineal line of the femur, linea aspera of the femur.

where is vastus intermedius muscle located?

the vastus intermedius muscle is the big muscle between the vastus medialis and vastus lateralis muscles.

what is the thigh and shin bone called?

thigh: femur shin: tibia

how do you get to the vastus intermedius muscle?

you need to dissect through the rectus femoris muscle and see deep to it which is the vastus intermedius muscle.

where does the sartorius muscle insert?

courses laterally and then down , courses medially, go right behind the knee joint and then inserts medial to the tibial tuberosity.

where does the rectus femoris muscle arise?

from the anterior inferior iliac spine.

where does the vastus intermedius muscle arise from?

from the front of the femur.

where does the vastus lateralis muscle arises?

from the linea aspera and part of the femur.

where does the vastus medialis muscle arise?

from the linea aspera on it's posterior (back) surface

what's the main action/function of the sartorius muscle?

hip joint: thigh flexion, thigh abduction, thigh external rotation. knee joint: leg flexion, leg internal rotation.