BIOS1167 Lecture Notes - Lecture 1: Extracellular Fluid, Fluid Compartments, Body Water
26 May 2018
School
Department
Course
Professor
Water
Fluid compartments of the body:
Intracellular (ICF) - fluid inside the cell (2/3)
-
Extracellular (ECF) - interstitial fluid and plasma (1/3)
-
Body water balance
Gained water from drinking, eating and metabolism
-
Lost water from faeces, sweat, urine, insensible loss (ie. Respiration/breathing)
-
Regulation (control) of body water - thirst determines intake:
Stimulated by blood volume and blood pressure
-
Behavioural responses
-
Urine production regulates water loss
-
Water is a polar molecule. The polar water molecules form intermolecular bonds known as
hydrogen bonds.
Higher electronegativity means higher attraction to bonds
-
Thermal (heat) properties of water
High melting points (MP) and boiling points
-
High heat capacity - can absorb relatively large amount of heat without undergoing a
large change in temperature
-
High heat of vaporisation - is the energy required to overcome the molecular forces of
attraction between the molecules of a liquid and bring them to the vapour state
where such attractions are minimal
-
The transfer of water in and out of cells
Cell membranes are selectively permeable ie. They allow unrestricted passage of
water
-
Large quantities of water are constantly moving in and out of our cells
-
Net movement of water is a significant cellular: osmosis
-
Water
Tuesday, 6 March 2018
12:38 pm
Water
Fluid compartments of the body:
Intracellular (ICF) - fluid inside the cell (2/3)
-
Extracellular (ECF) - interstitial fluid and plasma (1/3)
-
Body water balance
Gained water from drinking, eating and metabolism
-
Lost water from faeces, sweat, urine, insensible loss (ie. Respiration/breathing)
-
Regulation (control) of body water - thirst determines intake:
Stimulated by blood volume and blood pressure
-
Behavioural responses
-
Urine production regulates water loss
-
Water is a polar molecule. The polar water molecules form intermolecular bonds known as
hydrogen bonds.
Higher electronegativity means higher attraction to bonds
-
Thermal (heat) properties of water
High melting points (MP) and boiling points
-
High heat capacity - can absorb relatively large amount of heat without undergoing a
large change in temperature
-
High heat of vaporisation - is the energy required to overcome the molecular forces of
attraction between the molecules of a liquid and bring them to the vapour state
where such attractions are minimal
-
The transfer of water in and out of cells
Cell membranes are selectively permeable ie. They allow unrestricted passage of
water
-
Large quantities of water are constantly moving in and out of our cells
-
Net movement of water is a significant cellular: osmosis
-
Water
Tuesday, 6 March 2018
12:38 pm
Document Summary
Intracellular (icf) - fluid inside the cell (2/3) Extracellular (ecf) - interstitial fluid and plasma (1/3) Lost water from faeces, sweat, urine, insensible loss (ie. respiration/breathing) Regulation (control) of body water - thirst determines intake: The polar water molecules form intermolecular bonds known as hydrogen bonds. Higher electronegativity means higher attraction to bonds as. High melting points (mp) and boiling points s of. High heat capacity - can absorb relatively large amount of heat without undergoing a large change in temperature. High heat of vaporisation - is the energy required to overcome the molecular forces of attraction between the molecules of a liquid and bring them to the vapour state where such attractions are minimal. The transfer of water in and out of cells. Cell membranes are selectively permeable ie. they allow unrestricted passage of water. Large quantities of water are constantly moving in and out of our cells.
