Notas de lectura
Animal Body Science - Lectures on Osmoregulation
- Grado
- Institución
This document includes the lectures on Osmoregulation. This was a very helpful lecture for the lab and lab final.
[Mostrar más]Vista previa 2 fuera de 6 páginas
Vista previa 2 fuera de 6 páginas
Añadir al carrito
Añadir al carrito
Vendedor
Seguir
ellabogan
Vista previa del contenido
Bio 224 – animal body systems – osmoregulationTwo concepts to remember.
Osmosis: the movement of solvent particles across a semipermeable membrane from a dilute solution into a
concentrated solution
• The solvent moves to dilute the concentrated solution and equalize the concentration on both sides of
the membrane.
Diffusion: the movement of particles from an area of higher concentration to lower concentration
• The overall effect is to equalize concentration throughout the medium
Osmosis
the unit of osmotic concentration is the osmole (Osm)
• Number of Osm of solute per liter (L) of solution.
o Also termed Osm/L or “osmolar”
• A milliosmole (mOsm) = 1/1,000 0f an osmole
• A microosmole (uOsm) = 1/1,000,000 of an
osmole
Single Na+
A single Na+ contributes as mich to the osmolarity as a
large molecule.
• One mole of glucose, which does not ionize,
• One mole of NaCl
The osmol represents the pressure equivalent to the
amount of solute that dissociates in solution.
• Osmosis can be made to do work:
o Osmotic water movement generates a hydrostatic pressure.
o Osmotic pressure (pie)
• Mechanical pressure required to prevent movement of water across a
semipermeable membrane.
o 1.0 Osm solutions has a Pi of 22.4 atm at 0’C
, Tonicity
There are three classifications of tonicity relative to another.
Animals and their relationship with water
• Terrestrial:
o Unrestricted access
o Limited access
• Aquatic:
o Sea water
§ 1,000 mOsm
o Fresh water
§ <5 mOsm
Water and solutes in the Internal Media
• Water
o The universal solvent.
o 70% of the weight of an animal body
• Ions
o Na+, K+, Ca++, Cl-, Mg++, PO4-
• Organic molecules.
o Carbohydrates
o Proteins
o Lipids
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ellabogan. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for $10.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now