Muscles of the Pelvic Girdle and Hip Joint Flashcards Preview

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Flashcards in Muscles of the Pelvic Girdle and Hip Joint Deck (48):
1

Where is the Origin of the Iliacus?

Inside surface of the Ilium

2

Where is the Insertion of the Iliacus?

Top of the Femur

3

What muscle does the Iliacus share a tendon with?

The Psoas Major

4

What joint does the Iliacus cross?

Hip

5

What is the action of the Iliacus?

Flexes the hip

6

Where are the Origins of the Psoas Major?

The bodies, transverse processes and intervertebral discs of all lumbar vertebrae and T12

7

Where is the Insertion of the Psoas Major?

Top of the Femur?

8

What muscle does the Psoas Major share a tendon with?

Iliacus

9

What joints does the Psoas Major cross?

Hip and intervertebral joints of lumbar vertebrae

10

What are the Actions of the Psoas Major?

Origin fixed – flexes the hip. Insertion fixed – pulls on the spine to increase lumbar lordosis. Unilaterally – assists in lateral flexion of the trunk. Stabilises the lumbar spine

11

Together, what are the Iliacus and Psoas Major better known as?

The Hip Flexors (Iliopsoas)

12

Where are the Origins of the Gluteus Maximus?

Base of the Spine (Sacrum & Coccyx) and the back of the Ilium

13

Where are the Insertions of the Gluteus Maximus?

Iliotibial Tract & Femur

14

What joint does the Gluteus Maximus cross?

Hip

15

What are the Actions of the Gluteus Maximus?

Extends and laterally rotates the hip

16

Where is the Origin of the Gluteus Minimus?

Outer surface of the Ilium

17

Where is the Insertion of the Gluteus Minimus?

Laterally on top of the femur

18

What joint does the Gluteus Minimus cross?

Hip

19

What are the Actions of the Gluteus Minimus?

Abducts the hip and assists in turning the thigh inwards (medial rotation). Posterior fibres laterally rotate the hip, when the hip is flexed. It is important in hip stabilisation during the support phase in running/walking and prevents the pelvis dipping and the knees rolling inwards. Fixates the hip.

20

Where is the Origin of the Gluteus Medius?

Outer surface of the Ilium

21

Where is the Insertion of the Gluteus Medius?

Laterally on top of the Femur

22

What joint does the Gluteus Medius cross?

Hip

23

What are the Actions of the Gluteus Medius?

Abducts the hip and assists in turning the thigh inwards (medial rotation). Posterior fibres laterally rotate the hip, when the hip is flexed. It is important in hip stabilisation during the support phase in running/walking and prevents the pelvis dipping and the knees rolling inwards

24

Where is the Origin of the Piriformis?

Anterior surface of the Sacrum

25

Where is the Insertion of the Piriformis?

Top of the Femur (Greater Trochanter)

26

What joint does the Piriformis cross?

Hip

27

What are the Actions of the Piriformis?

Abducts the hip. Assists in lateral rotation of the hip (however, with hip flexed, it may assist in medial rotation)

28

Where is the Origin of the Tensor Fascia Latae?

Crest of Ilium

29

Where is the Insertion of the Tensor Fascia Latae?

Iliotibial Tract

30

What joints does the Tensor Fascia Latae cross?

Hip and Knee (via the Iliotibial Tract)

31

What are the Actions of the Tensor Fascia Latae?

Flexes the hip. Abducts the hip. Medially rotates the hip

32

Where are the Origins of the Sartorius?

Anteriorly & Laterally on the Iliac spine/crest

33

Where is the Insertion of the Sartorius?

Tibia (medially)

34

What joints does the Sartorius cross?

Hip & Knee

35

What are the Actions of the Sartorius?

Flexion and lateral rotation of the hip and flexion of the knee.

36

What are the names of each of the three muscles that make up the group called the Adductors?

Adductor Magnus
Adductor Longus
Adductor Brevis

37

Where is the Origin of the Adductors?

Pubis

38

Where is the Insertion of the Adductors?

Medial/posterior surface of the femur

39

What joint do the Adductors cross?

Hip

40

What is the Action of the Adductors?

Adduct the hip

41

Where is the Origin of the Pectineus?

Pubis

42

Where is the Insertion of the Pectineus

Femur

43

What joint does the Pectineus cross?

Hip

44

What are the Actions of the Pectineus?

Adducts & Flexes the Hip

45

Where is the Origin of the Gracilis?

Pubis

46

Where is the Insertion of the Gracilis?

Top of the Tibia (just below the knee joint)

47

What joints does the Gracilis cross?

Hip & Knee

48

What are the Actions of the Gracilis?

Adducts the hip. Assists in knee flexion (helps the hamstrings)