Muscles

What do muscles help protect?

• internal organs
• external organs
• tissues
• bones
• joints

How many muscles are there in the human body?

• over 60
• over 60 000
• over 600

What are muscles made up of?

• bone tissue
• muscle fibres
• cartilage

What do muscles respond to?

• nervous system
• blood system

What is the musculoskeletal system made up of? (tick all the correct answers)

• bones
• ligaments
• tendons
• muscles
• blood