SEHS B.1.4. Levers in Movement and Sport

What is the purpose of anatomical levers in the human body?

• Support body weight

• Produce movement

• Regulate temperature

• Enhance vision

The most common lever in the human body is?

• First class

• Second class

• Third Class

• Fourth Class

What is the name of the point on which a lever pivots?

• Moment arm

• Effort force

• Load

• Fulcrum

Where is the load located in a second class lever in relation to the fulcrum?

• Closer to the fulcrum than the effort

• Between the fulcrum and the effort

• Closer to the effort than the fulcrum

• On the opposite side from the load

Which type of lever is demonstrated by a person performing a bicep curl?

• First Class Lever

• Second Class Lever

• Third Class Lever

• Fourth Class Lever

Which lever class has the fulcrum positioned between the effort and the load?

• Fourth Class Levers

• Third Class Levers

• First Class Levers

• Second Class Levers

In the human body, which muscle causes plantar flexion at the ankle acting as a second class lever?

• Triceps

• Gastrocnemius

• Biceps

• Pectoralis major

Which lever is exemplified by a tennis player's shoulder as the fulcrum, arm muscles as the effort, and the ball as the load?

• First Class Lever

• Second Class Lever

• Third Class Lever

• Fourth Class Lever

What is an example of a first-class lever during the acceleration phase of a right-handed volleyball serve?

• Plantarflexion of the right ankle

• Flexion of the left elbow

• Extension of the right elbow

• Extension of the left knee

Which lever class has the effort positioned in the middle between the fulcrum and the load?

• Third Class Levers

• Second Class Levers

• Fourth Class Levers

• First Class Levers