PE Flashcards
What is a lever?
A lever is a rigid bar that rotates around a fixed point called the fulcrum.
What are the three classes of levers?
The three classes of levers are first class, second class, and third class.
In which class of lever is the fulcrum located between the effort and the load?
First class lever.
Which class of lever has the load between the fulcrum and the effort?
Second class lever.
In a third class lever, where is the effort applied?
The effort is applied between the fulcrum and the load.
True or False: The human body uses levers to perform movements.
True.
What is the role of muscles in the lever system?
Muscles provide the effort needed to move the load.
Name the three types of muscle tissue.
Skeletal, cardiac, and smooth muscle.
What type of muscle is responsible for voluntary movement?
Skeletal muscle.
What is the primary function of bones in the body?
To provide structure, support, and protection for the body’s organs.
What is the name of the bone found in the upper arm?
Humerus.
Fill in the blank: The _____ is the bone in the thigh.
Femur.
What are the two main types of bone tissue?
Cortical bone and trabecular bone.
What is the term for the front side of the body?
Anterior.
What is the opposite of anterior?
Posterior.
What is the purpose of joints in the body?
To allow movement and flexibility between bones.
What type of joint allows for the greatest range of motion?
Ball-and-socket joint.
True or False: The knee is an example of a hinge joint.
True.
What is the role of tendons in the muscular system?
To connect muscles to bones.
What is an antagonist muscle?
A muscle that opposes the action of another muscle.
What is an agonist muscle?
A muscle that contracts to create movement.
Fill in the blank: The _____ muscle is primarily responsible for flexing the elbow.
Biceps.
What is the primary action of the triceps muscle?
To extend the elbow.
What is the term for the study of the structure and function of muscles?
Myology.
