Human Body Systems Flashcards
Grade 4 · Science · Flashcards
Study key vocabulary for the major human body systems and their organs.
Flashcards
- Skeletal system
- The 206 bones that support and protect the body and allow movement
- Muscular system
- All the muscles in the body that produce movement
- Cardiac muscle
- The specialized muscle of the heart that never tires
- Digestive system
- The system that breaks food into nutrients the body can absorb
- Small intestine
- The organ where most nutrients are absorbed into the blood during digestion
- Large intestine
- The organ that absorbs water and forms solid waste
- Circulatory system
- The heart and blood vessels that move blood throughout the body
- Arteries
- Blood vessels that carry oxygen-rich blood away from the heart
- Veins
- Blood vessels that carry blood back to the heart
- Respiratory system
- The lungs and airways that exchange oxygen and carbon dioxide
- Organ
- A structure made of tissues that performs a specific body function
- Tendon
- Strong tissue that connects a muscle to a bone
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