Digestive and nervous
Circulatory and muscular
Digestive and respiratory
Muscular and digestive
Skeletal and respiratory
Circulatory and skeletal
Circulatory and digestive
Respiratory and digestive
Nervous and muscular
Circulatory and nervous
Respiratory and circulatory
Skeletal and nervous
Muscular and skeletal
Respiratory and muscular
Nervous and respiratory
Respiratory and nervous
Skeletal and digestive
When there is a tear or injury in muscle nerves send messages to the brain
Ribs protect lungs
Oxygenated blood is pumped through the heart and then circulated through cells. Red blood cells move oxygen and carbon dioxide through the blood. Alveoli exchange gas with capillaries.
Muscles in the jaw help the teeth grind the food, and the involuntary smooth muscles of the stomach breaks down the food. Food and nutrients in blood give energy to the muscles
Muscles work with bones to cause movement
Brain regulates heart rate and blood pressure
Blood, oxygen, and food are pumped to the muscles
Tells respiratory system to supply more oxygen when needed
Controls the rate of breathing
The liver removes waste products from the blood
Nutrients from food are provided for bones (calcium for strong bones)
Spinal column protects the spinal cord. Skull protects the brain
Diaphragm, an involuntary muscle, forces breath in and out
digestive system sends messages to brain when your hungry or full
muscles of the respiratory system need energy from digested food in order to function
Muscles of the digestive system need oxygen to function
Blood brings important nutrients from food (like calcium) to the bones