Ch. 40-41 Digestive

Ch. 40-41 Digestive - Animal Digestive Systems Chapters 40...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Animal Digestive Systems 1 BIOL 112 Animal Digestive Systems BIOL 112 Some Background ± Skim Chapter 40 — Animal Form/Function ± In Animals, cells make up tissues ± Tissue A group of cells with common structure/function. All the cells are of the same differentiated type ± Tissues make up organs ± Organ Specific collection or grouping of different tissues, the whole having some specific function BIOL 112 ± Examples ± Skin ± Digestive Organ Grouping of different organs make up an organ system ± Organ System Collection of different organs with specific overall function to body ± Major focus of this section will be human anatomy/physiology BIOL 112 BIOL 112 BIOL 112
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Animal Digestive Systems 2 BIOL 112 BIOL 112 BIOL 112 BIOL 112 BIOL 112 BIOL 112
Background image of page 2
Animal Digestive Systems 3 BIOL 112 BIOL 112 BIOL 112 Digestive System ± Four Major Functions ± Processing food ± Absorption of nutrients from food ± Absorption of electrolytes (Ca ++ , Na + , K + , Cl - , etc.) ± Absorption of water BIOL 112 BIOL 112 Processing ± Digestion Breaking of each of the macromolecule types into monomers ± Hydrolysis (Catabolic Reaction) ± Polysaccharides simple sugars ± Proteins amino acids ± Lipids fatty acids and glycerol ± Nucleic acids nucleotides BIOL 112
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Animal Digestive Systems 4 BIOL 112 Primitive Animals ± Digestion is mostly intracellular ± Paramecium engulfs food and digests in lysosomes ± Hydra partially digests prey in gastrovascular cavity, followed by phagocytosis of particles. Digestion (hydrolysis to monomers) completed in cells BIOL 112 BIOL 112 BIOL 112 Advanced Animals ± Digestion is exclusively extracellular ± Hydrolytic reactions must occur in lumens of digestive organs, then cells lining the lumen absorb resulting monomers BIOL 112 BIOL 112
Background image of page 4
Animal Digestive Systems 5 BIOL 112 Consider Human Digestive System ± Starts at mouth, ends at anus ± Approximately 5x human height BIOL 112 Start with Food ± Mouth ± Chewing Reflex ± Teeth ± Saliva Product of salivary glands. pH = 7.4 Two functions: ± Mixture of food with ptyalin — salivary amylase ± Mucus addition/mixture: binds food, lubricates ± Formation of
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 12

Ch. 40-41 Digestive - Animal Digestive Systems Chapters 40...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online