U4 B4 muscles

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

B4 Muscles

• Take off your jacket
  
• Put your things on your desk
  

       Book, notebook, pencil case

• Bag on the floor
  
• Read pages 31-33

Lessongoals

• You can explain how muscles work.
• You can give examples of voluntary and involuntary muscle movements.

Today

• Recap 
• Homework: -U4 – B3 – Ex. 7, 8, 9 and  U4 – B7 – ex. 2 until 4
• What is a muscle?
• How does a muscle work? 
• Do U4 – B4 – ex. 7 and 8
• Learn for the test on the first Friday after the holiday
  
• End

Homework

U4 – Bs 3 –  Ex. 7, 8, 9

U4 – Bs 4 – Ex. 2, 3, 4

Practice bones (bingo!)

What bone connection(s) doesn't allow any movement?

1. Only fused
2. Fused and sutures
3. Sutures and cartilage
4. All of these 3 types can move

Ulna and radius (the bones between elbow and wrist) form a ... joint.

1. ball-and-socket
2. pivot
3. hinge

What connection is found between your vertebrae?

1. fused
2. sutures
3. cartilage
4. joint

What connection is found between your skullbones?

1. fused
2. sutures
3. cartilage
4. joint

What connection is found in your knee?

1. fused
2. sutures
3. cartilage
4. joint

What is the name of the big bone you sit on?
(1 word)

Attachment site

Tendons are connected to a bone, this part of the bone is called an attachement site

Tendon

Tendons connect a muscle to a bone. Tendons are unable to contract.

Muscle

Muscles contract. This makes them shorter and thicker.

Antagonistic pairs

Muscles can only pull, not push.

Often muscles work together when moving bones.

muscle 1 contracts, 2 relaxes

Muscle 2 contracts, 1 relaxes

These muscles are an:

 antagonistic pair

Voluntary and involuntary movements

Skeletal muscles > move voluntary (when you want them to)

• Legs, arms, neck, back, etc.

Organ muscles > move involuntary (on their own, without you controlling it) 

• Heart, oesophagus, skin, stomach, etc.

Make a mind map

Support and locomotion:

• skeleton
  
• structure of bones
  
• joints
  
• muscles 

• Look at the learning goals
• Check if you have answered all the summary questions 
• Add pictures
• Use colours

What you should do:

• Read pages 31-33
• Do 4.4 ex. 7 and 8

Done with the above?

• Learn for the test
• Make other homework
• Read a book

Tips for learning: 

- Make all the tasks and hw

- Make mind map or a summary

- Start with learning two weeks before the test.

What you should do:

• Read pages 31-33
• Do 4.4 ex. 7 and 8

Done with the above?

• Learn for the test
• Make other homework
• Read a book

Zw = Working with whispering

Teacher is available for questions

Only whisper with the student next to you

Stay at your desk