physical education muscular stuff

Question 1

What is a synovial joint?

Answer 1

A synovial joint is a freely moveable joint in which the bones’ surfaces are covered by cartilage and connected by a fibrous connective tissue capsule.

Question 2

What does synovial fluid do?

Answer 2

Acts like an oil and lubricates the joint

Question 3

What are tendons?

Answer 3

Tendons attach muscle to bone.

Question 4

W

What is the ligament?

Answer 4

Bands of connective tissue that connects bone to bone and stabilises movement.

Question 5

What does cartilage do?

Answer 5

Designed to reduce friction and act as a shock absorber for the joint.

Question 6

Antagonistic pairs

Answer 6

Muscles work in pairs as one mucle contracts, the other relaxes.

Question 7

movement

Muscles

Answer 7

To produce movements, muscles either shorten, lengthen or remain the same when they contract.

Question 8

Antagonistic muscle action

Origin

Answer 8

The fixed or non-moving end is known as the origin. End of the muscles attached to a bone that is stable.

Question 9

Antagonistic muscle action

Insertion

Answer 9

The insertion is known as the moving end. End of the muscles attached to the bone that moves.

Question 10

Biceps and triceps

Antagonistic pairs example:

Answer 10

At the elbow joint, as the biceps flexes the elbow joint by contracting, the tricep relaxes. As the arm extends, the opposite occurs.

Question 11

Hamstrings and quadriceps

Antagonistic pairs example:

Answer 11

At the knee joint, as the hamstring contracts, the quadricep relaxes and the knee joint flexes.

Question 12

Agonist:

Answer 12

Working musle that produces or controls the desired joint movement

Also known as the prime mover.

Question 13

Antagonist:

Answer 13

Muscles work in pairs to make sure control is maintained. The movement created by the agonist is counteracted bu the movement created by the antagonist.