BPK 110 Lecture Notes - Lecture 1: Duodenum, Jejunum, Pepsin

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 110
• Professor: Diana Bedoya

Document Summary

Macronutrients (needed in larger amounts: water (fastest deficiency to appear, carbs (130 g minimum requirement, sugars, starches, fibres, organic (carbon-containing) Lipids: cholesterol, saturated & unsaturated fats, organic, proteins, amino acids, organic. Micronutrients (needed in smaller amounts: vitamins, fat soluble and water soluble, organic, minerals, chemical elements. Energy: fats (9kcal/g, carbs (4kcal/g, protein (4kcal/g, alcohol (7cal/g) Eg) inadequate water leads to dehydration: overnutrition, intake exceeds body needs. Basics of a healthy diet: eat a variety of foods, moderation of foods, food balance. 4 dris: recommended daily allowance (rda, adequate intake (ai, upper limit (ul, estimated average requirement. Directs bolus of food from pharynx to esophagus when closed. Directs air from pharynx to the trachea (windpipe) when open: esophagus, lower down in digestive tract, we find another type of movement called segmentation, which promotes the mixing of foodstuffs with digestive secretions, This doesn"t move food forward: stomach, 3 layers of smooth muscle.