Fluid Compartments
What are the two main compartments of the ECF?
1. Plasma
2. Interstitial
Formula of Molarity
M=n/V
(M) is molarity, (n) is moles, and (V) is volume in liters
What are aquaporins?
Channels that allow water to pass through the cell membrane.
What are the two types of active transport?
1. Primary active transport
2. Secondary active transport
What is the main difference between Endocytosis and Exocytosis?
1. Endocytosis = moving something to the inside of a cell
2. Exocytosis = moving something to the outside of a cell
Which compartment has:
1. Highest K+ concentration?
2. Highest Na+ concentration?
1. ICF
2. ECF
What is the difference between a hypotonic and hypertonic solution?
1. Hypotonic = lower solute level
2. Hypertonic = higher solute level
Water system proteins in the capillaries pull that water into the capillaries to maintain that blood pressure that fluid content in the capillaries in the circulatory system alright catching up 300. What are the membrane browns used for Transport in these processes? Called? Very nice next? What do you want? What are we doing? Do you want this? One? Do Endo psychosis use? ATP? Yes or no? Yes or no, you’re 50-50 What is Colloid Osmotic Pressure?
- The osmotic pressure exerted by plasma proteins that ‘pull’ water into the circulatory system.
Why is ATP needed in active transport?
To help move a molecule across a cell membrane against/up its concentration [] gradient.
Do Endo/Exocytosis use ATP?
Yes
Which specific compartment has the 2nd highest concentration of protein anions?
Plasma
If a red blood cell was placed into a 5% NaCl solution, what would happen?
The cell would shrink because it's in a hypertonic solution.
Provide the exact definition of osmosis
The diffusion of water across a semi-permeable membrane from high water to low water.
How many Na+ are transported using a Na+/K+ ATPase pump and where do they go?
3 Na+ and they move into the ECF from the ICF
What are the membrane-bound sacs used for transport in these processes called?
Vesicles
ICF is ?% of body weight based off a 70kg male
- 40% of body weight (2/3 of body water)
What is the osmolarity of the ICF and ECF? (mOsm)
300 mOsm
What is the accumulation of fluid within the interstitial space called?
Oedema
What is secondary active transport?
A process that moves molecules across a cell membrane against/up their concentration [] gradient, indirectly using ATP.
What is the cellular process where a cell engulfs large particles, such as bacteria?
Phagocytosis
List 4 places that Trancellular fluid can be found.
1. Cerebrospinal fluid
2. Aqueous humour in eye
3. Digestive secretions
4. Synovial fluid
5. Renal tubular flow
6. Urine
If the Molarity of a solution was 250mM, the osmolarity (mOsm) of MgCl₂ would be?
250 x 3 = (a little bit less than) 750 mOsm
In facillitated Diffusion, what is a protein carrier called when they are full? (high levels moleules in ECF moving into ICF)
Saturated
Of the all the calories we consume, how many do Na+/K+ ATPase pumps use in our body? Answer in % or /
1/3rd
In Exocytosis, what do SNARE proteins do?
SNARE proteins drive vesicle docking, membrane fusion, and cargo release.