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BODY WORKS

Act 14,15,17,18

QuestionAnswer
The total amount of area that is exposed on the outside of an object Surface Area
To physically break down food into smaller particles (mainly by chewing) Mechanical Breakdown
Chemicals in saliva and in the stomach/intestines break down food particles into their parts. Chemical Breakdown
Gradually taking in of a substance, for example the villi in the small intestine pull in the nutrients so that they can be transported by the blood Absorption
a chemical that helps us identify the presence of something (i.e. BTB changes color when exposed to CO2.) Indicator
Breaks down food into the nutrients to be absorbed into the blood. Digestive System
a group of organs working together for a specific function/job Organ System
The tiny parts of food that the body uses to survive and grow. Nutrients
Body system responsible for breathing--Oxygen in and Carbon Dioxide out Respiratory System
also called the cardiovascular system, moves the blood around the body Circulatory system
The small intestine is designed with tiny structures that increase the surface area to increase nutrient absorption. Name these structures. Villi
Which body system is the transport system in our bodies that delivers oxygen and nutrients to our cells? Circulatory system
How can we increase the amount of surface area exposed of a substance? Break it into smaller and smaller pieces.
When you added vinegar to the crushed tablet, what was different about the reaction compared to the whole tablet It was quicker
What is the structure in the lungs that increases the surface area so that the 0xygen exchange for Carbon Dioxide happens quicker? Aveoli
BTB was an indicator. Why did it turn yellow ( or green) when mixed with the blue? Extra Carbon Dioxide in the water.
Why is chewing your food important? Creates more surface area so that the stomach acid can break down food faster.
What other organs secrets chemicals to help break down the food in the small intestine? Pancreas
Why are the lungs made of many tiny air sacs, instead of being just one big balloon type structure.? to increase surface area so that the gas exchange, Oxygen into the blood, and carbon dioxide out of the blood can happen faster.
Created by: stoth