SunSupperSweat

Convey in 20 words or less, how

solar energy transfers to

food energy and then to cellular

energy (ATP) which is used to do

the work of the body.

Photosynthetic magic transfer solar to food energy

Tasty meal

Cell respiration transfers food energy to cell fuel.

Voila, push ups

How Food Becomes You

Consumption

Digestion

Absorption

Transport

Metabolism

THE FUN PART

FOOD CONSUMPTION

What factors influence your food choices?

Digestion

What do you think? T/F

There is acid in the stomach

that could burn your skin.

Swallowed gum stays in the

stomach about a week.

Food really can go down the wrong ‘tube’.

A healthy GI tract is clean (sterile).

Food is made into ATP in the GI tract.

Gastrointestinal Tract The Food Tube

Runs through the bodyGatekeeper to the bodyWhole foodscomponent parts

to be absorbed into bloodstream Proteins ? Carbs ? Fats/Oils ? Vitamins, minerals, water absorbed ~as is

Digestive Processes of GI Tract

ChemicalMechanical Chewing Peristalsis

Acids Bases Water Enzymes

Relevant terms Reverse peristalsis Emulsification Denaturation Hydrolysis

A delish practical application of a few of these terms

In ‘N Out ~ 30’ of muscular tube,

nerves, secretory organs Mouth Esophagus Stomach Small Intestine (SI) Large Intestine (LI) Rectum/Anus How long is this ‘trip’?

In ‘N Out ~ 30‘of muscular tube,

nerves, secretory organs Mouth Esophagus Stomach Small Intestine (helpers) Large Intestine (LI) Rectum/Anus How long does this take?

Digestive Brew Dumps into SI Liver makes bile to emulsify fat Gall Bladder

concentrates/stores/secretes bile Pancreas makes/secretes digestive nz SI makes digestive nz for digestion

Large Intestine (LI) Water re-absorption Good bacteria make ~Vitamin K

aka ‘probiotics’ Bad bacteria cause sickness What NOT absorbed… is waste excreted

Bacteria and Fiber (↑ fiber ↓ transit time)

What are prebiotics?

Absorption

Digested nutrients move

thru wall of SI into bloodstream Carbs as glucose Protein as amino acids Fats/oils as chylomicrons (type of lipoprotein)

Heart pumps blood to ‘feed’ all cells

Fig. 3-10, p. 81

Nutrient Roadmap

Consume foodDigestAbsorbTransport

What’s next?

Nutrient Roadmap

Consume foodDigest foodAbsorb nutrientsTransport to cellCells metabolize nutrients…

make energy (ATP)build ‘stuff’

store extra calories as fat!!

What do you think now? T/F

There is acid in the stomach

that could burn your skin.

Swallowed gum stays in the

stomach about a week.

Food really can go down the wrong ‘tube’.

A healthy GI tract is clean (sterile).

Food is made into ATP in the GI tract.

Summary…how food becomes you!

Digest…..breakdown whole food Absorb….transfer nutrients into bloodTransport…. move nutrients to cells Metabolize….cell use or store nutrients

Think before you eat…!

Optional slides

Fig. 3-11, p. 82

Fig. 3-13, p. 89

p. 85

Rate of Digestion

p. 85

Rate of Digestion

Major Organ Roles in Digestion

Mouth mechanical is primary carb digestion begins Stomach chemical is primary

protein digestion begins SI #1 site of chem digest most nutrients absorbed here LI water reabsorbed into blood

Metabolism-what happens in cells

NRG nutrients cell fuel (ATP)

Nutrients perform specific jobs

Excess energy nutrients convert to fat and are stored ….!