Musculoskeletal System

Musculoskeletal System

Year 8

What we will cover

• what is the musculoskeletal system?

• function of the musculoskeletal system​

• important parts

What is the musculoskeletal system?

A body system that encompasses all the muscles and bones in ​a body.

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Each organism has very different muscle and bone structures, this is dependent on their movement requirements ​

Bones / skeletal system

• 206 bones (adult body)

• ​main functions are support, protection, muscle attachment, mineral storage, and produces blood cells

• can be broken up into separate parts of the body ​

​types of joints

cartilage, tendons, ligaments

The connection between bones and muscles:

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Cartilage

• ​cushion between a joint

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Ligaments

• attaches bone to bone ​

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Tendons

• attaches bones to muscle ​

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Muscles

• ​main function is movement

• this movement could be moving around whilst playing sport, digestion, smiling, sleeping etc.

• muscles work by contracting and relaxing

  • contract = muscles shorten and thicken

  • relax = muscles become longer and thinner

• many muscles work in pairs to coordinate movement

  • one contracts and the other relaxes ​

​types of muscle

​Skeletal

• attaches to bone and allows movement

• striated (looks striped) to allow for contracting and relaxing ​

Smooth

• ​located inside structures e.g. inside the digestive tract

• contract in waves

• involuntary

​Cardiac

• muscles specific to the heart ​

• involuntary​

Multiple Select

Check ALL the boxes that describe the function of the Skeletal system.

• Gives shape and support

• Protects vital organs

• Creates blood cells

• Stores and produces calcium

• Breaks down food

Multiple Select

What vital organs do the skeleton protect?

• Brain, Heart, Lungs

• Brain, Kidneys, Liver

• Heart, Stomach, Brain

• Lungs, Heart, Skeletal Muscles

Multiple Choice

Which of the following is NOT a type of muscle?

• smooth

• rough

• cardiac

• skeletal

Multiple Choice

What is it called where two or more bones connect

• Joint

• Tendon

• ligaments

• cartilage

Multiple Choice

This tough band of connective tissue connects muscles to bones.

• ligament

• tendon

• cartilage

• femur