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Chapter 42: Circulation and Gas Exchange (Circulatory System (Open…
Chapter 42: Circulation and Gas Exchange
Circulatory System
Consists of a circulatory fluid, a heart, and interconnecting vessels
Open Circulatory System
Hemolymph (interstitial fluid) are also circulated and bathe body cells
Arthropods and some molluscs have this system
Closed Circulatory System
Interstitial fluid is separate from blood that is circulated in separate vessels
Annelids, cephalopods, and all vertebrates have this system
Respiratory System
Chapter 44: Osmoregulation and Excretion
Osmosis
Basic Definitions
Osmosis
Diffusion of water through a permeable membrane
Isoosmotic
When both sides of the membrane have equal concentrations
Hyperosmotic
The side of the membrane that has a higher solute concentration
Hypoosmotic
The side of the membrane that has a lower solute concentration
Osmolarity
Number of moles of solute per liter of solution
Mechanics
Osmoconformer
An organism that performs osmosis in accordance to it environment