Locomotor muscle attachment points

Question 1

Liopsoas

Answer 1

Psoas major
- lumbar vertebrae to lesser trochanter of the femur

illiacus
- iliac fossa of the pelvis to lesser trochanter of the femur

Question 2

Quadriceps

Answer 2

• all insert distally at quadriceps tendon
• vastus lateralis - greater trochanter and the lateral lip of lineament asper
• vastus intermedius - anterior and lateral surfaces of the femoral shaft
• vastus medialis - intertrochanteric line and medial lip of lineament aspera

rectus femoris - originates from the ileum just superior to the acetabulum

Question 3

Sartorius

Answer 3

• anterior superior iliac spine ASIS to the superior and medial surface of the tibia (pes aserinus)

Question 4

Pectineus

Answer 4

• pectineal line on the anterior surface of the pelvis

- then inferior to the lesser trochanter

Question 5

adductors

Answer 5

adductor Magnus
- inferior rami of the pubis then attaching to the line aspera

adductor longus
- from the pubis, then expands into a fan shape attaching broadly to the line aspera of the femur

adductor brevis
- pubis and inferior pubic rami, attaches to the line aspera on the posterior surface

gracilis
- inferior rami of the pubis and attaches to the medial tibia ( pes anserious)

Question 6

obtruator externes

Answer 6

• from the membrane of the obturator foramen and then attaches to the posterior part of the greater trochanter

Question 7

biceps femoris

Answer 7

The long head originates from the ischial tuberosity of the pelvis. The short head originates from the linea aspera on posterior surface of the femur. Together, the heads form a tendon, which inserts into the head of the fibula.

Question 8

semitendinous

Answer 8

It originates from the ischial tuberosity of the pelvis, and attaches to the medial surface of the tibia. (pes anserisu)

Question 9

semi membranous

Answer 9

It originates from the ischial tuberosity

- attaches to the medial tibial condyle

Question 10

tibialis anterior

Answer 10

Originates from the lateral surface of the tibia, attaches to the medial cuneiform and the base of metatarsal

Question 11

extensor digitorum longus

Answer 11

Originates from the lateral condyle of the tibia and the medial surface of the fibula. The fibres converge into a tendon, which travels to the dorsal surface of the foot. The tendon splits into four, each inserting onto a toe.

Question 12

extensor hallucis longus

Answer 12

Originates from the medial surface of the fibular shaft. The tendon crosses anterior to the ankle joint and attaches to the base of the distal phalanx of the great toe.

Question 13

fibulas tertius

Answer 13

Originates with the extensor digitorum longus from the medial surface of the fibula. The tendon descends with the EDL, until they reach the dorsal surface of the foot. The fibularis tertius tendon then diverges and attaches to metatarsal V.

Question 14

fibulas longus

Answer 14

The fibularis longus originates from the superior and lateral surface of the fibula and the lateral tibial condyle.
- eversion of the foot

Question 15

fibulas brevis

Answer 15

Originates from the inferolateral surface of the fibular shaft. The muscle belly forms a tendon, which descends with the fibularis longus into the foot.
- eversion of the foot

Question 16

gastrocnemius

Answer 16

The lateral head originates from the lateral femoral condyle, and medial head from the medial femoral condyle. The fibres converge, and form a single muscle belly. In the lower part of the leg, the muscle belly combines with the soleus to from the calcaneal tendon, with inserts onto the calcaneus

Question 17

soleus

Answer 17

Originates from the soleal line of the tibia and proximal fibular area. The muscle narrows in the lower part of the leg, and joins the calcaneal tendon.

Question 18

plantaris

Answer 18

Originates from the lateral supracondylar line of the femur. The muscle descends medially, condensing into a tendon that runs down the leg, between the gastrocnemius and soleus. The tendon blends with the calcaneal tendon.

Question 19

popliteus

Answer 19

Originates from the lateral condyle of the femur and the posterior horn of the lateral meniscus. From there, it runs inferomedially towards the tibia and inserts above the origin of the soleus muscle.

Question 20

tibialis posterior

Answer 20

Originates from the interosseous membrane between the tibia and fibula, and posterior surfaces of the two bones. The tendon enters the foot posterior to the medial malleolus, and attaches to the plantar surfaces of the medial tarsal bones.

Question 21

flexor digitorum longus

Answer 21

Originates from the medial surface of the tibia, attaches to the plantar surfaces of the lateral four digits.

Question 22

flexor hallucis longus

Answer 22

Originates from the posterior surface of the fibula, attaches to the plantar surface of the phalanx of the great toe

Question 23

biceps brachii

Answer 23

long head - supraglenoid tubercle of the scapula

• short head - coracoid process of the scapula
• biceps tendon on the radial tuberosity

Question 24

coracobrachialis

Answer 24

• coracoid process of the scapula, to medial side of the humeral shaft

Question 25

brachial

Answer 25

• medial and lateral surface of the humeral shaft

- ulna tuberosity just distal to the elbow joint

Question 26

triceps brachii

Answer 26

• long head - infraglenoid tubercle
• lateral head from the humerus
• medial head - from the humerus
• triceps tendon which inserts into the olecranon of the ulna

Question 27

flexor digitorum profundus

Answer 27

ulnar then attaches to the distal phalgens

Question 28

flexor digitorum superficials

Answer 28

It has two heads – one originates from the medial epicondyle of the humerus, the other from the radius. The muscle splits into four tendons at the wrist, which travel through the carpal tunnel, and attaches to the middle phalanges of the four fingers.

Question 29

flexor pollicis longus

Answer 29

Originates from the anterior surface of the radius, and surrounding interosseous membrane. Attaches to the base of the distal phalanx of the thumb.

Question 30

pronator quadratura

Answer 30

Originates from the anterior surface of the ulna, and attaches to the anterior surface of the radius

Question 31

brachioradialis

Answer 31

Originates from the proximal aspect of the lateral supracondylar ridge of humerus, and attaches to the distal end of the radius, just before the radial styloid process.

Question 32

anconeus

Answer 32

Originates from the lateral epicondyle, and attaches to the posterior and lateral part of the olecranon.

Question 33

supinator

Answer 33

It has two heads of origin. One originates from the lateral epicondyle of the humerus, the other from the posterior surface of the ulna