1.2.5.2. Muscles of Hip Joint Extension

Question 1

What movements can be carried out at the Hip Joint?

Answer 1

1. Flexion
2. Extension
3. Abduction
4. Adduction
5. Lateral Rotation
6. Medial Rotation
7. Circumduction

Question 2

What are the main Extensor Muscles of the Hip Joint?

Answer 2

1. Gluteus Maximus Muscle
2. Semimembranosus Muscle
3. Semitendinosus Muscle
4. Biceps Femoris Muscle

Question 3

Where does the Gluteus Maximus Muscle originate from?

Answer 3

1. Gluteal (Posterior) Surface of the Ilium
2. Gluteal (Posterior) Surface of the Sacrum
3. Gluteal (Posterior) Surface of the Coccyx

Question 4

Where does the Gluteus Maximus Muscle travel?

Answer 4

At a 45 degree angle across the Buttocks

Question 5

Where does the Gluteus Maximus Muscle attach distally?

Answer 5

1. Iliotibial Tract
2. Gluteal Tuberosity of the Femur

Question 6

What is the significance of the Gluteus Maximus Muscle?

Answer 6

1. It is the largest of the Gluteal Muscles
2. It is the most Superficial of the Gluteal Muscles - forming the shape of the Buttocks

Question 7

What is the function of the Gluteus Maximus Muscle?

Answer 7

1. It is the main Extensor of the Hip Joint
2. It assists in Lateral Rotation of the Hip Joint
   Note - It is only used when force is required, e.g. running, climbing, squatting

Question 8

What is the innervation of the Gluteus Maximus Muscle?

Answer 8

The Inferior Gluteal Nerve

Question 9

Where is the Semimembranosus Muscle located, in relation to the Semitendinosus Muscle?

Answer 9

Deep

Question 10

Where does the Semimembranosus Muscle originate from?

Answer 10

Ischial Tuberosity of the Pelvis, but more Superiorly than the Semitendinosus and Biceps Femoris Muscles

Question 11

Where does the Semimembranosus Muscle attach distally?

Answer 11

Medial Tibial Condyle

Question 12

What is the function of the Semimembranosus Muscle?

Answer 12

1. Flexion of the Leg at the Knee Joint
2. Extension of the Thigh at the Hip Joint
3. Medial Rotation of the Thigh at the Hip Joint
4. Medial Rotation of the Leg at the Knee Joint

Question 13

What is the innervation of the Semimembranosus Muscle?

Answer 13

Tibial Part of the Sciatic Nerve

Question 14

How is the Semimembranosus Muscle described?

Answer 14

It is Flat and Broad

Question 15

How is the Semitendinosus Muscle described?

Answer 15

It is a largely Tendinous Muscle

Question 16

Where is the Semitendinosus Muscle located, in relation to the Biceps Femoris?

Answer 16

Medially

Question 17

What does the Semitendinosus Muscle cover?

Answer 17

The majority of the Semimembranosus Muscle

Question 18

Where does the Semitendinosus Muscle originate from?

Answer 18

Ischial Tuberosity of the Pelvis

Question 19

Where does the Semitendinosus Muscle attach distally?

Answer 19

Medial Surface of the Tibia

Question 20

What is the function of the Semitendinosus Muscle?

Answer 20

1. Flexion of the Leg at the Knee Joint
2. Extension of the Thigh at the Hip Joint
3. Medially Rotation of the Thigh at the Hip Joint
4. Medially Rotation of the Leg at the Knee Joint

Question 21

What is the innervation of the Semitendinosus Muscle?

Answer 21

Tibial Part of the Sciatic Nerve

Question 22

1. What is the Biceps Femoris Muscle similar to?
2. Why?

Answer 22

1. Biceps Brachii in the Upper Arm
2. The Muscle has 2 Heads

Question 23

What are the 2 Heads of the Biceps Femoris Muscle?

Answer 23

1. Long Head of the Biceps Femoris Muscle
2. Short Head of the Biceps Femoris Muscle

Question 24

Where does the Long Head of the Biceps Femoris Muscle originate from?

Answer 24

Ischial Tuberosity of the Pelvis

Question 25

Where does the Short Head of the Biceps Femoris Muscle originate from?

Answer 25

Linea Aspera on the Posterior Surface of the Femur

Question 26

What do the Long and Short Heads of the Biceps Femoris Muscle form?

Answer 26

A single Tendon, the Tendon of the Biceps Femoris Muscle

Question 27

Where does the Tendon of the Biceps Femoris Muscle attach distally?

Answer 27

Head of the Fibula

Question 28

Where is the Biceps Femoris Muscle located?

Answer 28

It is the Lateral-Most Muscle in the Posterior Thigh

Question 29

Where can the Tendon of the Biceps Femoris Muscle be felt?

Answer 29

Laterally at the Posterior Knee Joint

Question 30

What is the function of the Biceps Femoris Muscle?

Answer 30

1. Flexion of the Leg at the Knee Joint
2. Extension of the Thigh at the Hip Joint
3. Lateral Rotation of the Thigh at the Hip Joint
4. Lateral Rotation of the Leg at the Knee Joint

Question 31

Do both the Long and Short Heads of the Biceps Femoris Muscle have the same innervation?

Answer 31

No

Question 32

What is the innervation of the Long Head of the Biceps Femoris Muscle?

Answer 32

Tibial Part of the Sciatic Nerve

Question 33

What is the innervation of the Short Head of the Biceps Femoris Muscle?

Answer 33

Common Fibular Part of the Sciatic Nerve