Select the correct answers that show the actions of muscles when the arm is bent.

• Biceps relaxed. Triceps contracted.

• Biceps relaxed. Triceps relaxed.

• Biceps contracted. Triceps relaxed.

• Biceps contracted. Triceps contracted.

Select the correct answer that show the actions of muscles when the arm is straightened.

• Biceps relaxed. Triceps contracted.

• Biceps relaxed. Triceps relaxed.

• Biceps contracted. Triceps relaxed.

• Biceps contracted. Triceps contracted.

Hinge joints allow the movements of limbs in one plane or one direction.

• TRUE

• FALSE

Which one is Ball-and-Socket joint? Tick the correct answer(s).

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• 
• 
• 
• 

What type of muscle tissue is found in the heart?

• skeletal

• smooth

• cardiac

• voluntary

Muscles always work in _____

• pairs
• groups of 3
• bones
• joints

What muscle is highlighted?

• Triceps

• Biceps

• Quads

• Deltoids

What muscles is highlighted?

• Deltoid

• Trapezius

• Tricep

• Pectoralis

What muscle is highlighted?

• Trapezius

• Lats

• Pectoralis

• Deltoids

Which joint action involves increasing the angle between two bones?

• Flexion

• Extension

• Rotation

• Abduction