Nutrition Exam 3

an essential, noncaloric; organic nutrient needed in tiny amounts

Vitamin

what are the 4 fat soluble vitamins

A, D, E, K

Water soluble vitamins

B vitamins and vitamin C

Which type of vitamin requires bile for absorbtion

Fat soluble

How are fat soluble vitamins absorbed

Absorbed like lipids: first into lymph, then the blood

How are water soluble vitamins absorbed

Directly into the bloodstream

Transport + storage of fat soluble vitamins

Transport: travel with protein carriers in watery bodily fluids

Storage: stored in liver and adipose(fatty) tissue

Transport + storage of water soluble vitamins

Transport: travel freely in watery fluids(bloodstream)

Storage: Most are not stored in the body (minimal)

Excretion of fat soluble vitamins

not readily excreted, tend to build up in tissues

Excretion of water soluble vitamins

readily excreted through urine

Toxicity of fat soluble vitamins (how much are they needed)

needed in periodic doses(weekly/monthly) depending on extent of body stores

Toxicity of water soluble vitamins (how much are they needed)

Needed frequently(daily) because the body does not store most of them to any extent

Beta carotene is a plant derived precursor to what vitamin?

Vitamin A

which vitamin is the most versatile?

Vitamin A

What is used to determine how much vitamin we will get out of the precursor

Retinol activity equivalents (RAE)