From where is the Iliopsas innervated? psoas major iliacus

psoas major is innervated by spinal nerves L2-L3 iliacus is innervated by the femoral nerve

Term 3 Exam: Gluteal Muscles Flashcards by Echo Quinton

Name three gluteal muscles that are involved in the movement of the femur:

Gluteus maximus
Gluteus medius
Gluteus minimus

How well did you know this?

Not at all

Perfectly

List 11 muscles involved in moving the femur

Iliopsoas muscle
Tensor fasciae latae
Gluteal Muscles x3
1. gluteus maximus
2. gluteus medius
3. gluteus minimus
Piriformis
Obturator internus
Obturator externus
Superior gemellus
Inferior gemellus
Quadratus femoris

How well did you know this?

Not at all

Perfectly

What is the Iliopsoas muscle?

(2)

Psoas major and iliacus muscles that share the same insertion
Powerful flexor of the thigh

How well did you know this?

Not at all

Perfectly

What is the Tensor fasciae latae? (3)

Found?
Forms?
Belly located?

Muscle that lies under the fasciae lata (dense ct that encircle entire thight)
Forms the iliotibial tract (IT tract)
Belly lies between the gluteus maximus and sartorius muscles

How well did you know this?

Not at all

Perfectly

What is the iliotibial tract?

Strong band of connective tissue that spans the lateral side of the thigh

formed from tensor fasciae lata

How well did you know this?

Not at all

Perfectly

what is the significance of the location of the belly of the Tensor fasciae latae?

The belly is located between the gluteus maximus and sartorius muscles

this location keeps the IT (iliotibial) tract taut and helps maintain the extended knee in the erect position

How well did you know this?

Not at all

Perfectly

List four important features of the gluteus maximus

The gluteus maximus is the largest of the three glute muscles
It is the superficial quadrilateral muscle of the buttocks
it is a powerful extesor of the thigh
It’s RMA (reverse muscel action) is a poerful extensor of the torso at the hip joint

How well did you know this?

Not at all

Perfectly

Where is the gluteus medius located and what is its action?

Located deep to the gluteus maximus
Powerful abductor of the hip joint

How well did you know this?

Not at all

Perfectly

What is featurely significant about the gluteus minimus?

Where is it located relative to the gluteus medius?

What is its action?

Smallest of the three gluteus muscles
lies deep to the gluteus minimus
Coordinates with gluteus medius to abduct and medially rotate the femur for walking and running

How well did you know this?

Not at all

Perfectly

What is the origin of the iliopsas?

Psoas major
iliacus

Psoas major originates at the transverse processes and bodies of lumbar vertebrae
Iliacus originates at the iliac fossa and sacrum

How well did you know this?

Not at all

Perfectly

What is the insertion of the ilipsoas?

Psoas major
ileacus

Both insert into lesser trochanter of femur

How well did you know this?

Not at all

Perfectly

What is the action of the iliopsas?

psoas major
iliacus

Psoas major and iliacus muscles act together to:

flex thigh at hip joint
rotate thigh laterally
flex trunk on the hip as in sitting up from the supine position (sit ups)

How well did you know this?

Not at all

Perfectly

From where is the Iliopsas innervated?

psoas major
iliacus

psoas major is innervated by spinal nerves L2-L3
iliacus is innervated by the femoral nerve

How well did you know this?

Not at all

Perfectly

Name the

Origin
Insertion
Action
Innervation

of the Gluteus maximus:

Orgin: iliac crest, sacrum, coccyx, and aponeurosis of sacrospinalis
Insertion: Iliotibial tract of fascia lata and superior lateral part of linea aspera under greater trochanter of femur
Action: Extends thigh at hip joint and laterally rotates thigh
Innervated: Interior gluteal nerve

How well did you know this?

Not at all

Perfectly

Name the

Origin
Insertion
Action
Innervation

of the Gluteus medius:

Origin: Ilium
Insertion: Greater trochanter of femur
Action: Abducts thigh at hip joint and rotates thigh medially
Innervation: Superior gluteal nerve

How well did you know this?

Not at all

Perfectly

Name the

Origin
Insertion
Action
Innervation

of the gluteus minimus

Origin: ilium
Insertion: greater trochanter of femur
Action: abducts thigh at hip joint and medially rotates thigh
Innervation: superior gluteal nerve

How well did you know this?

Not at all

Perfectly

Name the

Origin
Insertion
Action
Innervation

of the tensor fasciae latae

Origin: iliac crest
Insertion: tibia by way of the iliotibial tract
Action: flexes and abducts thigh at hip joint
Innervation: superior gluteal nerve

How well did you know this?

Not at all

Perfectly

Name the

Origin
Insertion
Action
Innervation

of the piriformis

Origin: anterior sacrum
Insertion: superior border of greater trochanter of femur
Action: Laterally rotates and abducts thigh at hip joint
Innervation: sacral spinal nerves S1 and S2 (mainly S1)

How well did you know this?

Not at all

Perfectly

Name the

Origin
Insertion
Action
Innervation

of the Obturator internus

Origin: inner surface of obturator foramen, pubis and ischium
Insertion: medial surface of greater trochanter of femur
Action: Laterally rotates and abducts thigh at hip joint
Innervation: nerve to obturator internus

Name the

Origin
Insertion
Action
Innervation

of the obturator externus

Origin: outer surface of obturator membrane
Insertion: deep depression inferior to greater trochanter of femur (aka trochanteric fossa)
Action: laterally rotates and abducts thigh at hip joint
Innervation: Obturator nerve

Name the

Origin
Insertion
Action
Innervation

of Superior gemellus

Origin: ischial spine
Insertion: Medial surface of greater trochanter of femur
Action: laterally rotates and abducts the thigh at the hip joint
Innervation: nerve to obturator internus

Name the

Origin
Insertion
Action
Innervation

of inferior gemellus

Origin: ischial tuberosity
Insertion: medial surface of greater trochanter of femur
Action: laterally rotates and abducts thigh at hip joint
Innervation: Nerve to quadratus femoris

Name the

Origin
Insertion
Action
Innervation

of Quadratus femoris

Origin: ischial tuberosity
Insertion: elevation superior to mid-portion of intertrochanteric crest on posterior femur/
Action: laterally rotates and stabilizes hip joint
Innervation: nerve to quadratus femoris

The _____ (______) separates the muscles of the thigh into medial, anterior and posterior compartments

The Deep Fascia (intermuscular septum) separates the muscles of the thigh into medial, anterior and posterior compartments

The medial compartment of the thigh contains which 5 muscles?

1. Adductor longus 2. Adductor brevis 3. Adductor magnus 4. Pectineus 5. Gracilis

Most muscles ____ and _____ femur at _____ \_\_\_\_\_\_

Most muscles _flex_ and _adduct_ femur at _hip joint_

The ______ muscle medially rotates thigh and flexes leg at knee joint

The Gracilis muscle

What is the origin, insertion and action of the: Adductor longus

Orgin: Adductor longus originates at the pubic crest and pubic symphysis Instertion: Linea aspera of femur Action: Adducts and flexes thigh at hip joint and rotates thigh; RMA extends thigh

What is the origin, insertion and action of the: Adductor Brevis

Origin: Adductor brevis originates at the inferior ramus of pubis Insertion: Superior half of linea aspera of femur Action: Adducts and flexes thigh at hip joint and rotates thigh; RMA: extends thigh

What is the origin, insertion and action of the: Adductor magnus

Origin: Adductor magnus originates at the inferior ramus of pubis and ischium to ischial tuberosity Insertion: Linea aspera of femur Action: Adducts thigh at hip joint and rotates thigh; anterior part flexes thigh at hip joint, and posterior part extends thigh at hip joint

What is the origin, insertion and action of the: Pectineus

Origin: Pectineus originates at the superior ramus of pubis Insertion: Pectineal line of femur, between lesser trochanter and linea aspera Action: Flexes and adducts thigh at hip joint

What is the origin, insertion and action of the: Gracilis

Origin: the gracilis originates at the body and inferior ramus of the pubis Insertion: Medial surface of body of tibia Action: Adducts thigh at hip joint, medially rotates thigh and flexes leg at knee joint

The anterior compartment of the thigh (extensors) has which two main muscles? \*keep in mind one of these muscles is a composite muscle\*

1. Quadriceps femoris (composite muscle usually described as 4 separate muscles) 2. Sartorius

What four muscles make up the quadriceps femoris?

1. Rectus femoris 2. Vastus lateralis 3. Vastus medialis 4. Vastus intermedius

Which muscle is the longest single muscle in the body?

Sartorius

What is the origin, insertion and action of the: Rectus femoris

Origin: The rectus femoris originates at the anterior inferior iliac spine Insertion: patella via quadriceps tendon and then tibial tuberosity via patellar ligament Action: flexes thigh at hip joint; Works with rest of quadriceps femoris muscles to extend leg at knee joint

What is the origin, insertion and action of the: Vastus lateralis

Origin: the vastus lateralis originates at the rreater trochanter and linea aspera of femur Insertion: Patella via quadriceps tendon and then tibial tuberosity via patellar ligament Action: Works with rest of the quadriceps femoris muscles to extend leg at knee joint

What is the origin, insertion and action of the: Vastus medialis

Origin: the vastus medialis originates at the linea aspera of femur Insertion: Patella via quadriceps tendon and then tibial tuberosity via patellar ligament Action: works with other quadriceps femoris muscles to extend leg at knee joint

What is the origin, insertion and action of the: Vastus intermedius

Origin: The vastus intermedius originates at the anterior and lateral surfaces of body of femur Insertion: Patella via quadriceps tendon and then tibial tuberosity via patellar ligament Action: Works with rest of the quadriceps femoris muscles to extend leg at knee joint

What is the origin, insertion and action of the: Sartorius muscle

Origin: the sartorius muscle originates at the anterior superior iliac spine Insertion: Medial surface of body of tibia Action: Weakly flexes leg at knee joint; weakly flexes, abducts, and laterally rotates thigh at hip joint

Which composite muscle is found in the posterior (flexor) compartment of the thigh

The hamstrings

What three muscles make up the hamstrings in the posterior (flexor) compartment of the thigh?

1. Biceps femoris 2. Semitendinosus 3. Semimembranosus

What are the two actions of the hamstrings?

1. flexes the leg at the knee joint 2. extends thigh at the hip joint

What is the origin and insertion of the Biceps femoris?

Origin: Long head arises from ischial tuberosity; short head arises from linea aspera of femur Insertion: Head of fibula and lateral condyle of tibia

What is the origin and insertion of the semitendinosus?

Origin: Ischial tuberosity Insertion: Proximal part of medial surface of shaft of tibia

What is the origin and insertion of the Semimembranosus

origin: Ischial tuberosity Insertion: Medial condyle of tibia