Antagonistic Muscle

Complete the passage below to explain how muscles work together to move your skeleton. The human body contains more than ___________ muscles.

• more than 600

• more than 500

• more than 700

• more than 800

Complete the passage below to explain how muscles work together to move your skeleton. These muscles are attached to the bone by __________________.

• tendons.

• ligaments.

• cartilage.

• muscles.

Complete the passage below to explain how muscles work together to move your skeleton. When a muscle ________ it shortens and _________ on a bone.

• contracts; pulls

• expands; pushes

• relaxes; lifts

• stretches; holds

Complete the passage below to explain how muscles work together to move your skeleton. If the bone is part of a ________ it will cause the bone to move.

• joint

• muscle

• tendon

• ligament

Complete the passage below to explain how muscles work together to move your skeleton. Muscles always work in ____________.

• pairs.

• groups.

• isolation.

• random.

Complete the passage below to explain how muscles work together to move your skeleton. While one muscle is contracting, the other is ______________________.

• relaxing.

• contracting.

• stiffening.

• expanding.

Complete the passage below to explain how muscles work together to move your skeleton. When muscles contract they become _________________ and __________________.

• shorter and thicker.

• longer and thinner.

• weaker and softer.

• stretched and loose.

Complete the passage below to explain how muscles work together to move your skeleton. When muscles relax they become ___________________ and ______________________.

• relaxed and elongated

• tense and contracted

• shortened and stiff

• rigid and inflexible

Complete the passage below to explain how muscles work together to move your skeleton. These pairs of muscles are called __________________________ muscles.

• antagonistic

• synergistic

• agonistic

• flexor

The diagram shows pictures of the biceps and triceps. These muscles work together to bend and straighten the arm at the ______________ joint.

• elbow

• knee

• shoulder

• hip