0
Extracellular fluid contains up to 10000 times more calcium than intracellular fluid and yet all cells continue to pump out even more calcium They could only do this by means of?
Daisyduke2
active transport
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is the major anion in the extracellular fluids of the body?
Major Intracellular cation - K+ (Potassium) Major Extracellular cation - Na+ (Sodium) Major Intracellular anion - PO4+ (Phosphate) Major Extracellular anion - Cl- (Chloride)
What is immediate source of calcium ion for muscle fiber?
There is some calcium outside the cell but the bulk of it comes from intracellular stores.
What does sarcoplasmic reticulum do?
The Sarcoplasmic Retiulum releases calcium ions that will cause troponin/tropomyosin complex to move. This exposes the binding sites on actin and allows the cross-bridges of myosin to bind to the actin binding sites.
What chemical causes a decrease in the blood calcium level?
The parathyroid glands (4 of them) secrete parathyroid hormone to increase blood calcium. When the parathyroid glands detect low blood calcium levels, they secrete more parathyroid hormone, which causes the bones to release calcium to the bloodstream, thereby increasing blood calcium levels.
Which Hormone that acts on 3 target organs to increase the blood levels of calcium?
Parathyroid hormone which is a hormone secreted by the parathyroid glands that acts to maintain a constant concentration of calcium in the extracellular fluid.
During contraction of the heart muscle cells?
some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium from intracellular stores
What is the chloride ion concentration in intracellular fluid?
Every Laboratory has specfic values that their Lab Medicine Docs have signed off as being Normal Values, however, generally The Intracellular Concentration of Chloride in Eukaryotic Cells is 5 milliMoles. The Extracellular Concentration of Chloride is 110 mM. The Intracellular Concentration of Calcium is < 1 mM The Extracellular Concentration of Calcium is 1.8 mM
What is the major anion in the extracellular fluids of the body?
Major Intracellular cation - K+ (Potassium) Major Extracellular cation - Na+ (Sodium) Major Intracellular anion - PO4+ (Phosphate) Major Extracellular anion - Cl- (Chloride)
What would happen to intracellular calcium levels if a muscle fiber were treated with a calcium channel-blocking drug?
It would increse the intracellular calcium
What happened to the neurotransmitter release when switched from the control extracellular fluid to the extracellular fluid with no calcium?
There is no neurotransmitter release from the axon terminal when there are no calcium ions in the extracellular solution. This is because the exocytosis of the synaptic vesicles is calcium dependent.
What is found in extracellular fluid?
The principal elements in the extracellular fluid are sodium, potassium and calcium.
What is the most cation extracellular fluid?
calcium ; sodium
What occurs when intracellular calcium levels are high?
calcium ions bind to regulatory sites on troponin
What is an extracellular cation that contributes to the hardness of bones and teeth?
Calcium
Intracellular plant structure composed of calcium oxalate?
Cytosol/ Cystolith
What is the most important factor in decreasing intracellular concentration of calcium ion after contraction is?
active transport of calcium into the sarcoplasmic reticulum
What does the onset of tetanus indicate about the amount of free calcium in the sarcoplasm?
At tetanus levels of released Calcium in the the intracellular compartment are at their highest level.
