Question

Part E: Post-lab Questions 1. You made two muscles in the posterior, lower leg. Name the two muscles and note which muscle was the deep muscle. 2. Where is the origin of the rectus femoris? 3. Where is the insertion of the sartorius? 4. What is the action of the biceps femoris? 5. Name two muscles that have the ischial tuberosity as their origin. 6. Which muscles have their insertion on the calcaneus? 7. What do "adduction" and "abduction" mean? 8. What do "extension" and "flexion" mean?

Answer 1

Answer:

1. Two muscles in the posterior compartment of the legs are:

- gastrocnemius

- Soleus

Soleus lies deeper then gastrocnemius.

2. Origin of rectus femoris:

Anterior inferior iliac spine and ilium superior to acetabulum

3. Insertion of sartorius:

It inserts on Superior part of medial surface of tibia

4. Action of biceps femoris:

It flexes and laterally rotates leg, extends thigh at hip

5. Muscles having ischial tuberosity as origins are:

hamstring muscles originate from the ischial tuberosity

- Bicep femoris

- Semitendinosus

-semimembranosus

6. Muscle inserting on calcaneus:

- Gastrocnemius through achillies tendon

7. Abduction is the movement of a part away from the central axis while adduction is the movement of the part towards the axis.

8.  

Flexion: it is the decrease in the angle between the bones (bending of the joint),

extension: it is the increase in the angle of joint and straightens the joint.