When Biting into an Apple,the Temporomandibular Joint Is the [Dropdown

Short Answer

When biting into an apple,the temporomandibular joint is the [dropdown 1] and acts like [dropdown 2] because the food is in the front of the mouth.When chewing the apple,the mandible acts like a [dropdown 3] because the food is in the middle of the lever arm.
Dropdown 1 choices:
fulcrum
lever
load
Dropdown 2 and 3 choices:
first-class lever
second-class lever
third-class lever