Skeletal and muscular system

What is the main function of joints in the human body?

• To store energy
  

• To allow movement
  

• To protect bones
  

• To produce blood cells

Which of the following is an example of a hinge joint?

• Hip

• Shoulder
  

• Elbow

• Wrist

When you bend your arm at the elbow, which type of movement are you performing?

• Flexion
  

• Extension
  

• Rotation
  

• Abduction

Which muscle group is responsible for extending your leg at the knee joint?

• Triceps
  

• Hamstrings
  

• Biceps
  

• Quadriceps

Which statement best describes the role of the skeletal muscles in physical activity?

• They help produce movement and maintain posture.
  

• They help protect organs and store fat.
  

• They transport oxygen throughout the body.
  

• They secrete hormones for digestion.

If you wanted to design an exercise to strengthen your calf muscles, which of the following activities would you include?

• Squats
  

• Push-ups
  

• Calf raises
  

• Bicep curls

What type of joint is found at the shoulder and allows circular movements?

• Ball and socket joint
  

• Hinge joint
  

• Pivot joint
  

• Gliding joint

Why are ligaments important for joint stability?

• They connect muscles to bones.
  

• They help protect bones from injury.
  

• They connect bones to other bones.
  

• They store energy for muscle contractions

Which muscle is primarily responsible for the movement of your biceps when lifting an object?

• Biceps brachii
  

• Triceps brachii
  

• Deltoid

• Latissimus dorsi

Which of the following movements occurs at the wrist joint when you rotate your hand to face your palm up?

• Pronation
  

• Supination
  

• Flexion
  

• Extension