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Water II

Water II. By: Brianna Ackerman & Taylor Panfil. How does it get there?. Fruits and Vegetables we consume Liquids! Hydrate, Hydrate, Hydrate! Ingested water travels through the Digestive System and is absorbed into the bloodstream via the Small Intestine.

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Water II

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  1. Water II By: Brianna Ackerman & Taylor Panfil

  2. How does it get there? • Fruits and Vegetables we consume • Liquids! Hydrate, Hydrate, Hydrate! • Ingested water travels through the Digestive System and is absorbed into the bloodstream via the Small Intestine. • About 80% of ingested water is absorbed into the blood. • The rest travels to the Large Intestine where it is utilized during the formation of feces.

  3. How does it get there? • Metabolic Water • Produced as an end product of macronutrient oxidation • Lipid Catabolism is the most abundant source • Produces about .3L daily

  4. That’s one busy molecule! • Crossing the Membrane • Osmosis: Intracellular  Extracellular • Passive Transport • Water diffuses from a Hypotonic Cell (low solute/ high water content)  Hypertonic Cell (high solute/low water content) • If water is not transferred into a Hypertonic Cell it will shrivel up (Crenation) • If water is not transferred out of a Hypotonic Cell it will burst (Cytolysis) • An Isotonic cell is a happy cell. • Water is equally concentrated inside and outside the cell and fluids can flow freely between compartments.

  5. Chemistry Review!

  6. Hormonal Regulation • ICF and ECF levels are maintained by hormonal messages from the Brain and Kidneys • If a a cell becomes too concentrated in one fluid compartment it will pull water from another compartment (Osmosis) to dilute itself to maintain homeostasis (Isotonic State)

  7. Hormonal Regulation • When ICF and ECF levels are unequal • The Brain is signaled by ADH that the cells are dehydrating due to water transferring out of the cell into the bloodstream • The Brain then promotes a feeling of thirst, encouraging the body to ingest more water through food or drink • Thirsty feelings will continue until the cells return to homeostasis (Isotonic state) • The transfer of ICF to ECF is via diffusion across the capillary wall

  8. Hormonal Regulation • If there is excess fluid present in the body than is desired the kidneys are prompted to produce urine by ADH • Kidneys produce urine by filtering excess fluid from the blood

  9. Water Formation • Water contains 1 Oxygen atom and 2 Hydrogen atoms connected by covalent bonds • Metabolic Water • Made in the ETC • O2 is split into 2 separate oxygen atoms • H2’s are cleaved from NADH2 and FADH2 and combine with a singular oxygen atom to form water (H2O)

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