00:01
Hello students, let us determine the type of movement that has taken place in each of the following.
00:08
The quadriceps contracting with greater force than the knee flexors.
00:13
Here extension movement takes place.
00:16
Extension movement takes place because when the quadriceps contract there is a greater force than the opposing knee flexors.
00:26
Therefore it leads to the straightening of the knee joint.
00:30
Biceps femoris concentric.
00:33
The biceps femoris is a muscle which is located at the thigh.
00:39
When it contracts concentrically it assists in extension.
00:45
It assists in extension of the hip joint.
00:51
The erector spinae concentric.
00:54
The erector spinae muscles are located along the spine.
00:57
When they contract concentrically they assist in flexion.
01:05
They assist in flexion.
01:08
Gluteus maximus concentric.
01:11
The gluteus maximus is the largest muscle in the buttocks.
01:15
When it contracts concentrically it assists in the extending of hip joint.
01:23
It assists in the extension of hip joint...