• Label the diagram of the digestive system (  ) with the terms we learned on Tuesday.
• Try not to use your notes!

https://www.youtube.com/watch?v=ST1UWnenOo0

• Chemical reactions take place that either…
• Break things down into smaller parts
• AKA: Catabolism
• Or build them back up into new compounds for your body to use
• AKA: Anabolism

• We eat food to get nutrients (proteins, fats, carbohydrates)
• But the nutrients are sometimes not in the right form to be used
• So, our bodies digest the nutrients and break them down into their smallest parts
• Protein  amino acids
• Fat  fatty acids
• Carbohydrates  glucose, fructose, galactose

Catabolic reactions
• release energy
• Break down large molecules to simple molecules
• Protein  amino acids
• Fat  fatty acids
• Carbohydrates  glucose, fructose, galactose
Anabolic reactions
• absorb energy
• Convert simple molecules to larger molecules
• Glucose → Glycogen
• Amino acids → Proteins
• Fatty acids and glycerol →
Triglycerides

• Is the most metabolically active organ in the body
• First organ to metabolize, store, and distribute nutrients after absorption
• Liver converts monosaccharides, amino acids, glycerol, and fatty acids either…
• Into new compounds
• Into energy
• Or stores them for future use
• Triglycerides
• Glycogen

Basal Metabolic Rate (BMR)
• rate at which the body uses energy while at rest
• Everything you need to keep vital functions going
• such as breathing and keeping warm
Body Mass Index (BMI)
• uses a ratio of weight to height
• can determine whether you are at risk for health problems related to weight

• You need to know 5 things to calculate your BMR:
• Gender
• Weight
• Height
• Age
• Activity Level

• Women: 655 + (4.35 x weight) + (4.7 X height in inches) – (4.7 x age)
• Multiply the result by their activity level for more accuracy
• Men: 66 + (6.23 x weight) + (12.7 X height in inches) – (6.8 x age)
• Multiply the result by their activity level for more accuracy

Activity Level
Low
Light
Moderate
High
Very High
Description
You get little to no exercise
You exercise lightly (1-3 days per week)
You exercise moderately (3-5 days per week)
You exercise lightly (6-7 days per week)
Formula
BMR x 1.2 = calories burned per day
BMR x 1.375 = calories burned per day
BMR x 1.55 = calories burned per day
BMR x 1.725 = calories burned per day
You exercise very heavily (2 times per day, extra heavy workouts)
BMR x 1.9 = calories burned per day

• Calcuate the BMR for the 3 people on the back of your handout
• Check your work using this website
• http://tinyurl.com/4xww8lo

• Write your name on your notecard
• Write the final answers to 1-3 on your notecard
• Briefly explain what a BMR is.