Blood Definition and 334 Threads

I'm really confused about blood transfusion, I know that O group is a universal Donner but how since it has both antibodies A,B, why doesn't agglutination happen? For an example o group is donated to an individual with A blood group why doesn't the antibody A of O group cause Agglutination in...

Hello, Newbie here. Guess this is going to be a pretty odd first post. I've recently been having a discussion with a few friends, regarding whether it's plausible that magnetic bracelets could have any form of healing potential (for arthritis and similar conditions). To me, my friends lack of...

Hi there, So I'm asking this in reference to the injection of insulin, which is commonly done subcutaneously (in the hypodermis, a fatty part of skin). Now I know proteins usually get into the blood when digested through the stomach/intestines - but I was wondering how they manage to get into...

In the bone marrow, the normal ratio of myeloid and erythroid series cells is 4:1. So, for every erythroid cell, there are four myeloid cells, which gives But in the circulation, there are almost 1000 times more RBC's than total WBC's ( which also includes non-myeloid WBC's, such as...

Hi all I want to donate with my blood but I have a concern. I am going to have a plastic surgery (Rhinoplasty) withing 1 month from now. will blood donation have any affect on me??

On the Last Season of the HBO TV Show True Blood all these Vampires are coming out and walking somewhere. I did not get it were are they going?

The basis behind electric energy is the movement of electrons or ions through a wire or medium. That is simple. I know that blood vessels carry ions such as K+, Cl-, and Na+ through them in varying concentrations. What I want to know is if it would be viable to create a biological solenoid by...

Homework Statement When blood pressure is measured, why must the jacket be held at the level of the heart? I don't quite understand the answer given. The Attempt at a Solution It's obvious that if the the height changes the pressure reading will change due to P=ρgΔh, thus giving a...

I am confused on how osmolarity of cells with water would cause a cell to swell, shrink, or burst. I know that a cell has a solution concentration of 300 mosm. In a lab that was done, we analyzed the impact of a red blood cell in solutions containing different osmolarities. For example, when a...

I have and as I said, I am on some version of the diet myself, though not for weight loss purposes. In rankings of Diets *generally* Atkins rates very low. The weight loss effects from Atkins are mostly due to the fact that carb restriction is a good way to lower calories. So it amounts to a...

While doing pushups why does an individual feel a lot of blood in his/her head region? Its like a lot of blood has flown into the head which is surprising considering that during pushups either the body is horizontal or slightly tilted with the head higher than the rest of the body so blood...

In leukaemia since immature white blood cells increase, do they overcrowd and decrease mature white blood cells. So does neutropenia and thrombocytopenia, leucocytopenia occur in leukaemia. Or does this deped on subtypes eg in some leukaemia B lymphocytes increase. Thanks :smile:

How much blood is lost when getting a blood panel and how long does it take to replenish?

Total "osmolarity" of blood? Curious about water weight vs. biological I've seen plasma osmolality described on wikipedia: http://en.wikipedia.org/wiki/Plasma_osmolality This looks at the concentration of electrolytes in the "plasma solvent". However, plasma is the liquid of the blood...

I donated blood at the Red Cross yesterday, and now I'm wondering about some of the claims they make, and whether it's really worth my time to donate. They say that you save a life every time you donate blood, and that all units donated are used. I don't see how this is possible. Surely...

I have never really thought why an air embolus can restrict the passage of blood, until now, and I don't really understand. Why can't the circulation pressure just push the air embolus forward until it is eventually expelled in the lungs? Or why can't it dissolve the embolus? In a plant is...

Homework Statement Hi! I'm creating my master thesis in computer science. The title is 'simulator of magnetic resonance angiography'. My problem is that I have to create some kind of overlay on my image with streamlines of flowing blood. I have to arrays with velocity vectors in two directions...

Dear friends I would like to know what is the normal temperature of human blood flow through coronary artery? What is the temperature of the blood when the person suffering from very high feverish condition? Regards kmgraju

I was recently asked why the iron in our blood wasn't killing us while iron is poisonous to the body; and what would be if it was other metals than iron in our blood, what would happen?

I'm asking because I want to know whether the technique of rebreathing N2O back into a balloon reduces the the amount absorbed when inhaled again. It obviously dilutes the N2O with some CO2 and water vapor, but I assume the dilution is pretty minimal.

Homework Statement The osmotic pressure (π) of the blood plasma necessary to induce absorption of water from interstitium (outside) to the capillary bed under circumstances shown on the picture (attached) has to be a. Less than 20 mmHg b. Between -1 and 20 mmHg c. Equal to 21 mmHg d. Greater...

Does the medulla monitor blood pH or is it only the receptors in the heart (aorta / carotid bodies)?

Homework Statement An artery with a 3 mm radius is partially blocked with plaque. In the constricted region the effective radius is 2 mm and the average blood velocity is 0.5 m/s. What is the average velocity in the unobstructed region? Assume no changes to η, L, and ΔP. Ans; 0.22 m/s...

Homework Statement A typical Arteriole has a diameter of .030 mm and carries blood at the rate of 5.5* 10^-6 cm^3/s. What is the speed of the blood in an arteriole? Homework Equations s=P/vρ The Attempt at a Solution Blood is made of mostly water, so I used the same ρ as water...

Hii..i have a question maybe it seems a stupid question but I should know answer. We use syringe to take a blood samples and transfer liquids out of the body. I’m talking about take a blood samples with syringe.. Anyway The needle is used to pierce the top layer of the skin, and we can take a...

I have just been to the doctors and had my blood pressure taken. My blood pressure was 106 over 66 and the time before it was 98 over 72. The doctor said it was low, but what exactly does low blood pressure mean? and why does it keep changing? Also how many times is your heart suppose to beat...

Blood is in continuous contact with itself. Thus any pressure on artery blood is pressure on vein blood. So they have the same pressure. What am I missing here?

Hey guys! I am working on a simulation of a brain blood flow model. Instead of programming something on my own, I wanted to check first whether there are any electric circuit programs that could do the job. I am using the flow-circuit/electric circuit analogy...

The pattern could be at an arterial, arteriole or capillary level. There are plenty of examples of branched patterns in organisms. (C) Baccar et al, Difficulté du diagnostic étiologique d’un poumon clair unilatéral, La tunisie Medicale - 2011 ; Vol 89 ( n°06 ) : 578-579 But are there...

Has anyone tried to apply the following regression equation appeared in the paper "Continuous measurement of systolic blood pressure using the PTT and other parameters" (Proceedings of the 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference Shanghai, China, September 1-4, 2005)...

helping a relative with their final studying but its been a few years since I've taken intro phys Suppose a blood vessel is horizontal and it has wide and narrow cross sections as shown in Fig 1. In the real life the edges are not sharp and we assume their effects are negligible. Suppose the...

Okay, I have read all the threads on this site that I could find about Bernoulli's equation and blood pressure, but I am still really confused, and the more I think about it the more confused I get. I get that bernoulli's doesn't take frictional losses into account, but at a short section of...

Let's say that somehow your blood could literally boil. First of all, is that even possible? Second, how? What circumstances would you have to be in for your blood to boil? Also, in a kind of related question, if your blood did boil, would it cause you to swell and/or explode?

If the blood sugar is too high, why does it affect the health of blood vessals? Does sugar become fat and block the blood vessals? Does anyone have any suggestions? Thanks in advance for any suggestions

I know that when you hyperventilate, the Pco2 in blood decreases... but is it the venous or arterial PCo2 that's decreasing? Can someone please clarify this? Thank you!

In AP Bio we've been learning about blood pressure and pulse, and how to calculate pulse ranges of exercise. But, I was wondering, if we can calculate that, can we also calculate the maximum safe heart rate to within a reasonable range? Also, is it possible to calculate safe blood pressure...

Ok, well don't drink it, but they do owe you a couple years don't they? http://med.stanford.edu/ism/2011/august/aging-brain.html "The mixing of old and young blood produced changes in both the young and the old mice’s brains. For one thing, the older mouse in these pairs produced more new...

Homework Statement I have to conceptually design a device that works with a sphygmomanometer but does not need the stethoscope. So it needs to function with the oscillatory method (analyzing the signal of pressure changes as heart pumps blood as opposed to listening to the Kirchoff's sounds)...

Homework Statement This time I'd like someone to verify that my rationale behind the correct answer is accurate... Which of the following will decrease the chance of turbulent blood flow in a vein? A. Narrowing the vein. B. Thinning the blood without changing its density. C...

A plasma is a gas (or, I guess a liquid, at high enough pressure or.. cause of other properties..?) witch has its electrons separated from the rest of the atom, witch is now a ion. So it is a mixture of free electrons and ions. Is blood plasma really this? I cannot find any information on this...

Blood flow... Relating the Continuity of flow equation (A1v1 = A2v2) with Bernoulli's equation, with Poiseuille's equation. Continuity of flow equation tells us this: when the area decreases, the velocity increases in order to maintain a constant flow rate. Bernoulli's equation tells us...

hi,please how much does the blood pressure in your brain increase when you change from a standing position to your head

I've been around for a long time in the halls of debate, including internet forums. Here's a general observation. There are two types of thinker. * I contend that these types are part of a greater distinction that is as old as blood - subspecies of the human race. One is more numerous than the...

Homework Statement Calculate the mass flow rate of blood (of den- sity 1 g/cm3) in an aorta with a cross-sectional area of 2 cm2 if the flow speed is 43 cm/s . Answer in units of g/s. Homework Equationsm=pAv The Attempt at a SolutionHey guys! I can tell that this is a very...

We will construct a simple model of the circulatory system to investigate the rate at which cuts bleed. In this model we will assume that blood is a Newtonian fluid at all length scales so that the equations of fluid flow which we have been studying will apply. We will also assume that the...

How does potassium affect the blood pressure? how does it lower the blood pressure with the help of the kidney(collecting duct)? thanks

In acute blood loss both RBC and fluid is lost, so why doesn't haemotocrit stay normal. I know compensatory mechanism would increase the fluid, eg kidney. But red blood cell prodcution would take few weeks. Is that the reason haemotocrit decreases? Thanks :smile:

why don't the donor's antibodies(found in the transferred blood) attack the receiver's cells during blood transfusion?

In blood clotting disorders, clotting time is increased, but when there is plalete disorder clotting time is not affected. What is the reason for that. Aren't platelets required for blood clotting. Also when a fibrous mesh is formed, do red blood cells and platelets get stuck in it. Is it why...

Is there anything to this? "http://www.dadamo.com/" ." Any truth to Dr. D'Adamo's claim, other than getting people to sign up for his program?