Digestive Organs
What organ begins chemical digestion?
Mouth (saliva breaks down starch)
What connects muscle to bone?
Tendons
What joint is in a chicken wing?
✔️ Hinge joint
What muscles push food through the digestive tract?
✔️ Smooth muscles
Wave-like muscle movements that move food are called what?
Peristalsis
Why do muscles work in pairs?
Muscles can only pull, not push
Name one bone in the chicken wing.
✔️ Radius, ulna, or humerus
Which two systems work to deliver nutrients to cells?
✔️ Digestive + Circulatory
Which organ absorbs MOST nutrients?
Small intestine
What does cartilage do?
Cushions joints and reduces friction
Inside the ulna, you saw something important — what was it?
✔️ Bone marrow (makes blood cells)
How does the musculoskeletal system protect the digestive system?
✔️ Bones (like ribs) protect organs; muscles support them
What is the semi-liquid mixture made in the stomach?
Chyme
List the 3 muscle types and where each is found.
✔️ Skeletal — bones
✔️ Smooth — organs
✔️ Cardiac — heart
What part of the wing do humans eat?
Mainly Muscle
Why do muscles rely on the digestive system?
✔️ Muscles need nutrients for energy
Name two helper organs and what they do.
✔️ Liver (makes bile)
✔️ Pancreas (makes enzymes)
✔️ Gallbladder (stores bile)
What type of muscle is voluntary?
✔️ Skeletal muscle
How did pulling a tendon move the wing?
✔️ Tendon pulled the bone → bone moved → wing bent or straightened
Explain how all three systems connect: Digestive + Circulatory + Musculoskeletal
Digestive breaks down food → nutrients enter bloodstream → circulatory system delivers nutrients to muscles → muscles use energy to move the body.