4.4 muscles

• Biologie / Verzorging
• Middelbare school
• vmbo b
• Leerjaar 1

4.4 Muscles

start task

1. Complete the assignment written on the paper.
     Write down the answers in your notebook.

2. Then, copy the learning objectives from page 30 into your       

     zuidschrift.

Learning objective: After this lesson, you can

- describe how muscles work.

planning

1. Starter task                        – 5 minutes
2. Explanation and notes – 15 minutes
3. Klokhuis video                  – 10 minutes
4. Quiz                                       – 10 minutes
5. (Home)work                       – 10 minutes

Leerdoelen: Na deze les kun je:

- de werking van spieren beschrijven.

Goosebumps

Where are all your muscles located?

• Under your skin
• In organs (stomach)
• Your heart is a muscle

>> involuntairy

• Skeletal muscles

Structure of Muscles

A muscle is attached to the bone with 

tendons (pezen) .

The place where a tendon is attached 

to a bone is called the attachment point.

Muscle contraction

1. When a muscle contracts, it becomes shorter and thicker.

2. By contracting, the muscle pulls on the bone.

3. The muscle pulls the bones towards each other.

4. This creates movement.

Cooperating muscles

In many parts of your body, muscles work together.

An example of this is the muscles you 

use to move your forearm.

The arm bending muscle (biceps) 

and the arm stretching muscle (triceps).

armbuigspier en armstrekspier

Cooperating muscles

A bending muscle and a stretching muscle that work together to make a movement are called an antagonistic pair.

The stretching muscle is the opposite of the bending muscle.

Antagonists: muscles that work in opposite ways.

quiz

Log in to LessonUp, 

use your own first name.

How can your body move?

1. only by bones
2. by muscles and bones together
3. only by muscles

What is between a bone and a muscle?

1. Muscle bundle
2. Muscle fiber
3. Tendon
4. Attachment site

When the arm bending muscle contracts, it becomes:

1. longer and thinner
2. Longer and thicker
3. shorter and thicker
4. Shorter and thinner

What happens when the biceps contract?

1. the arm extends.
2. the arm bends
3. the hand turns inward
4. The arm stays at rest.

What is an antagonistic pair?

1. Two muscles that work together to strengthen a movement.
2. Two muscles that take turns contracting and relaxing.
3. A muscle and a tendon that together move a joint.
4. Two muscles that are connected to the same tendon.

Which muscles are responsible for extending your foot when standing on your toes?

1. Calf muscles
2. thigh muscles
3. anterior tibial muscle
4. abdominal muscles

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(home)work

Do assignments 1, 2 and 3

pg. 33 + 34