Question

a joint that allows free movement in multiple directions is called what?
pivot joint
gliding joint
ball - and - socket joint
hinge joint
question 14
2 pts
most levers in the human body are what type?
second - class levers
first - class levers
fourth - class levers
third - class levers

Explanation:

• Ball - and - socket joint: This joint type has a ball - shaped end of one bone fitting into a cup - like socket of another bone. It allows for a wide range of movements in multiple directions, such as in the shoulder and hip.
• Third - class levers: In the human body, most levers are third - class levers. In a third - class lever, the effort is applied between the fulcrum and the load. For example, when the biceps muscle contracts to lift the forearm, the elbow is the fulcrum, the biceps applies the effort, and the hand (with any weight it is holding) is the load.

Answer:

• First question: Ball - and - socket joint
• Second question: Third - class levers