Temporalis & Masseter muscles

Steps for doing:

1. The coloured part is being stretched.

2. Wide open the mouth.

3. Pull  downwards and backwards.

4. Chin tucked position.

5. Head and neck straight.

Lateral pterygoid muscle

Steps for doing:

1. The coloured part is  being stretched.

2. Push the mandible to the same side as shown.

3. Towards right side.

Medial Pterygoid muscle

Steps for doing:

1. The coloured part is being stretched.

2. Pull the jaw to the same side as shown.

3. Pull below and towards right