Y7: Muscles

• Biology
• Lower Secondary (Key Stage 3)

Y7: Muscles

What type of joint is this?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint is this?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint is this?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint is this?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint is this?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint is this?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint allows movement in all directions?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What type of joint allows no movement?

1. Hinge joint
2. Ball-and-socket joint
3. Fixed joint

What direction can a hinge joint move?

Compare the movement of a shoulder joint to an elbow joint.

(What type of joint is each? How is their movement different?)

Cartilage

Strong, smooth tissue that protects the ends of bones from rubbing together.

Joint Fluid

Lubricates the joint to reduce friction between the bones.

Ligaments

Tough, rubbery tissue that connects one bone to another.

Where is the ligament in this joint?

Where is the cartilage in this joint?

What type of joint are these examples?

Hinge

Ball-and-Socket

Fixed

Shoulder

Hip

Fingers

Knee

Elbow

Skull

Pelvis

Muscles

Muscles allow us to move! They attach to bones and pull them in the needed direction. If someone does a lot of weightlifting, their muscles will grow as they adapt to the work. This is not immediate – people have to build up to heavier weights, have rest days, and eat a protein rich diet to allow healthy muscle growth. Lifting weights incorrectly or lifting too heavy will lead to injury. Some injuries caused by incorrect training can be permanent.

Muscles allow us to move! They attach to bones and pull them in the needed direction. If someone does a lot of weightlifting, their muscles will grow as they adapt to the work. This is not immediate – people have to build up to heavier weights, have rest days, and eat a protein rich diet to allow healthy muscle growth. Lifting weights incorrectly or lifting too heavy will lead to injury. Some injuries caused by incorrect training can be permanent.

The heart contracts to...

The stomach contracts to...

The intestines contract to...

What would be the effect of having weak heart muscle?

How many tendons can you see here?

1. 1
2. 2
3. 3
4. 4

Give one similarity and one difference between a tendon and a ligament.

What will muscle A need to do to lift the dumbell?

1. Contract
2. Relax

What will happen to muscle A's length?

1. Shorten
2. Lengthen

What will happen to muscle B?

Contracts

Contracts

Relaxes

Relaxes