Digestive System
Chews food; Saliva contains amylase (an enzyme) to break starch into glucose.
What is the MOUTH
This system acts like a "Delivery Truck" and transports food molecules and oxygen to cells. The heart pumps the blood.
What is the CIRCULATORY SYSTEM
This molecule is NOT broken down during digestion and is eventually excreted as waste.
What is FIBER
The ___________________ is the organ responsible for pumping blood throughout the body.
What is the HEART
A tube that moves food down to the stomach.
What is the ESOPHAGUS
The system where the lungs take in oxygen and exhale carbon dioxide. Gases move into the blood at the alveoli.
What is the RESPIRATORY SYSTEM
Proteins are broken down into ___________________ ___________________ during digestion.
What are AMINO ACIDS
The respiratory system takes in _______; the circulatory system picks up that ________ and delivers it to the muscle cell.
Hint: It's the same answer for both.
What is OXYGEN
Uses gastric juices and acid to kill bacteria and break protein into amino acids and fat into fatty acids.
What is the STOMACH
The system that uses oxygen and food molecules to create the energy needed for movement.
What is the MUSCULAR SYSTEM
The name of the tiny, finger-like structures that increase surface area for absorption?
What are VILLI
When we "burn" fat through the chemical reaction for energy, the fat molecules are broken down and leave our body as___________ and _____________.
What are:
CARBON DIOXIDE (exhaled by lungs)
WATER (excreted by the body through sweat or urine)
Continues breaking down food. Small molecules (glucose, amino acids, fatty acids) are absorbed by the villi into the bloodstream
What are the SMALL INTESTINES
The system that uses absorbed nutrients (like calcium) to build strong bones. The bone marrow makes red blood cells that carry oxygen.
What is the SKELETAL SYSTEM
Fats are broken down into ___________________ ___________________ during digestion.
What are FATTY ACIDS
Food (Glucose) + Oxygen → Energy + Carbon Dioxide + Water
What is the EQUATION FOR ENERGY
Inputs: Food (molecules with Carbon, Hydrogen, and Oxygen) and Oxygen.
Outputs: Energy (the main goal), plus Carbon Dioxide and Water as byproducts.
Absorbs excess water and salt; excretes fiber and undigested waste.
What are the LARGE INTESTINES
The system where the brain controls digestion by sending signals for peristalsis (moving food) and enzyme release.
What is the NERVOUS SYSTEM
In the respiratory system, gases like oxygen and carbon dioxide move into and out of the blood at the ___________________.
What is the ALVEOLI
Three things your body can do with a food molecule once it is absorbed into the blood.
What are:
1. USE FOR ENERGY
2. USE FOR GROWTH/BUILDING
3. SAVE FOR LATER (Storage/Fat)