3.3 a

the musculoskeletal system

part 1

Learning objectives​

• an introduction to the musculoskeletal system and its main functions.​

• theory on the muscular system and its main functions.​

• ​ workbook activities.​

Keywords 

• Muscular – relating to the muscles​

• Skeletal – relating to the skeleton ​

• System – a group of organs that work together to perform an important function of the body ​

• Respiration – the action of breathing​

• Protection – to keep safe from harm or injury​

What is the musculoskeletal system?​

The musculoskeletal system is a combination of two body systems: ​

The muscular system and the skeletal system. ​

​

What is the difference?​

• The muscular system: contains the skeletal, cardiac and smooth muscles.​ ​

• The skeletal system: contains the bones, and the joints, tendons ligaments and cartilage that connect the bones together.​

Multiple Select

List the three main functions of the musculoskeletal system ?

(activity 12)

• Form ​

• breathing

• Stability ​

• Movement​

Why are these systems grouped together?​

They are grouped together as the musculoskeletal system because they rely on one another to function. ​

Without a musculoskeletal system, the body would not be able to stand, walk or sit. ​

​

The muscular system​

The job of the muscles in the musculoskeletal system is to allow people to move, talk and chew food. ​

They are in involved in circulation, respiration and digestion.​

Movement​

• The main function of the muscular system is to create movement.​

• Movement is possible because of the skeletal muscles.​

• The muscles are attached to the bones and when they contract, they pull on the bones to make them move.​

Open Ended

what is the job and main function of The muscular system​ ?

Circulation

• The heart is a muscle that pumps blood around the body also known as a cardiac muscle.​

• The cardiac muscles contract (get smaller) and relax and this is how the heart pumps blood around your body.​

• Smooth muscle can be found in the arteries and veins around the heart.​

Respiration

• The diaphragm is a large muscle which is below the lungs and helps our body with the breathing process.​

• The diaphragm contracts and relaxes to push air in and out of the lungs which enables us to breathe.​ ​

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Digestion ​

• Smooth muscles in the body’s stomach and intestines help to move and break up food.​

• The muscles contract and relax to move food around the digestive system to mix the food inside the stomach.​ ​

Recap​

• The musculoskeletal system is a combination of two body systems: the muscular system and the skeletal system. ​

• The muscular system contains the skeletal, cardiac and smooth muscles.

• The skeletal system contains the bones, and the joints, tendons ligaments and cartilage.

• The three main functions of the musculoskeletal system are to provide form, stability and movement.​

Recap​

• Movement is possible because of skeletal muscles

• The heart is made up of cardiac muscles that contract and relax to pump blood around your body

• Smooth muscles in the body’s stomach and intestines help to move and break up food. ​

• 
  

Open Ended

what is so important about the musculoskeletal system ?