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Blood
Blood is a bodily fluid consisting of plasma, blood cells, and platelets that is circulated by the heart through the vertebrate vascular system, carrying oxygen and nutrients to and waste materials away from all body tissues. In many species, it also carries hormones and disease-fighting substances. In this category, you will find questions about the blood in your body, including blood types, blood diseases, and the function of blood.
9,936 Questions
How do white blood cells help us?
White blood cells are part of the immune system. Some white blood cells capture invading bacteria and then destroy them or transport them to other organs of the body where they will be eliminated.
How many red blood cells are made each day and where are they made?
The are made in bone marrow or the spongy bonepart of the bone. Look in your science book to double check!
- Hemoglobin in red blood cells binds to oxygen molecules, allowing for efficient transport of oxygen throughout the body.
- Red blood cells have a biconcave shape, which increases their surface area for oxygen exchange and allows them to easily deform and pass through narrow blood vessels.
- The absence of a nucleus in mature red blood cells maximizes their hemoglobin content, enhancing their oxygen-carrying capacity.
What stimulates the production of thyroxin?
The production of thyroxin is primarily stimulated by thyroid-stimulating hormone (TSH) released by the pituitary gland. When levels of thyroxin decrease, the pituitary gland signals the thyroid gland to produce more thyroxin by releasing TSH. Stress, pregnancy, and certain medications can also affect the production of thyroxin.
What is the normal hemoglobin level in women?
A normal hemoglobin level for a female is 12.1 to 15.1 grams per deciliter. Hemoglobin is the part of the red blood cell that carries oxygen.
Xylem cells are not inherently red or blue; their color can vary depending on the staining method used in laboratory studies. The color change helps researchers identify and differentiate the various types of plant tissues.
What is the significance of donnan equilibrium to the biological system?
The Donnan equilibrium effect can be correlated to living cells. Cell membranes are selectively permeable, which means that they allow some molecules to pass through while keeping others out.
The flow of molecules and ions between a cell and its environment is regulated by the Donnan effect. Living cells contain impermeable anionic colloids, which are mostly made up of proteins and organic phosphates; and these colloidal anions cannot cross the cell membrane.
As a result of this, there is a high concentration of non-diffusible anions across the cell membrane, thus creating the Donnan Equilibrium. This means that there are more ions inside the cell than outside. For ease of explanation let's call this Donnan Equilibrium 1.
What does this do to cells? Water will continuously move into the cell by the process of osmosis. If this process continues, the cells will inevitably rupture.
What is the mechanism that prevents cells from swelling and rupturing?The answer is the sodium pump (Na⁺- K⁺ ATPase) in the cell membrane. It is the most ubiquitous system in animal cells. The presence of the ATP-driven Na⁺ and K⁺ pump is nature's way of preventing cells from rupturing by continuously pushing out excess ions.The pump together with the membrane's low permeability to sodium effectively prevents sodium from entering the cell. The sodium pump renders the membrane impermeable to sodium, setting up a second Donnan Equilibrium (let's call this Donnan Equilibrium 2).
The earlier Donnan effect (Donnan Equilibrium 1) with respect to impermeable anionic colloids balances the latter Donnan effect (Donnan Equilibrium 2) of impermeable extracellular sodium. The balancing act between these two effects is by way of allowing cells to maintain and regulate normal cell volume in living functions.
Hope this answers the question.
What are two ways in which white blood cells work?
White blood cells, also called Leukocytes, carry out immunity functions in the blood. There are many different types of WBC's in the blood, divided into two groups: Granulated and not Granulated. Each different type carries out a different immune function.
How much blood lose does it take in the human body to die?
The amount of blood in a body varies slightly with size, sex and age, but the average human has 8-12 pints of blood in their body. A blood loss of 4 pints or more without immediate medical attention will usually prove fatal.
The red color of blood comes from the iron-containing molecule hemoglobin found in red blood cells. When hemoglobin binds to oxygen in the lungs, it appears bright red. When it releases oxygen to tissues throughout the body, it appears darker red.
In which vessels are materials exchanged between the blood and the body cells?
Those tiny and beautiful blood vessels are called as capillaries. You have millions of them in your body. The nutrition and oxygen is given out, at the proximal end. The metabolic wastes and carbon bi oxide in taken in, at the distal end.
Who was the father of genetics?
Gregor Mendel is often referred to as the father of genetics. He is known for his work on pea plants, where he established the basic principles of heredity through his experiments on the transmission of characteristics from parent to offspring. Mendel's discoveries laid the foundation for the science of genetics.
What are the examples of proteins?
Examples of proteins include enzymes (such as amylase, catalase), structural proteins (such as collagen, keratin), transport proteins (such as hemoglobin, albumin), and antibodies.
White blood cells are a crucial part of the immune system and are responsible for fighting off infections and foreign invaders in the body. They help to identify and destroy pathogens such as bacteria, viruses, and fungi, helping to keep the body healthy and protected. There are different types of white blood cells, each with specific functions in the immune response.
A red blood cell placed in a hypotonic solution?
This is not true. An isotonic solution is one that is equivalent in concentration to that found within human plasma so that is usually desirable. On the other hand, a person may have too little of an ion. In that case the amount needs to be replaced using a hypertonic solution. The trouble with that is that if the patient is not carefully monitored, too much of whatever ion is used will enter the cells, causing the cells to draw more water in to maintain balance. When that happens, especially with sodium, the patient must be monitored closely because giving too much can cause the sodium level in the cells to exceed normal levels. When that happens, the cells draw more water in which can cause the cells to swell and then the membranes to begin to leak such as we see with pulmonary edema.
Glutathione is a tri-peptide or protein that is in every cell of your body. It is highest in your liver and kidneys. It is absolutely essential for good health.
Glutathione has hundreds of functions in the body, but the acronym "An IDEA" covers about 90% of what glutathione does.
An-tioxidant
I-mmune System Optimizer
D-etoxifier
E-nergy Restorer
A-nti-aging Protein
What is the liquid portion of the blood?
The liquid portion of blood is called plasma. Plasma is a yellowish fluid that makes up about 55% of blood volume and carries various substances such as water, electrolytes, proteins, hormones, and waste products.
White blood count 15000 and very tired what does it mean?
An elevated white blood cell count (15000) may indicate an infection or inflammation in the body. Feeling very tired can be a common symptom of an infection, as your body is working hard to fight it off. It's important to consult a healthcare provider for proper evaluation and treatment.
What coagulation factors are measured by the PT?
Prothrombin time (PT) measures the activity of coagulation factors in the tissue factor pathway of the coagulation cascade.
No, water does not contain protein. Water is a simple molecule composed of two hydrogen atoms and one oxygen atom, and it does not contain any protein molecules. Protein is commonly found in foods such as meat, dairy products, beans, and nuts.
Is it possible to have pains transfer from one part of the body to another?
Yes, referred pain is a phenomenon where pain is felt in a different part of the body than the actual source of the pain. This can occur due to the way the nerves are connected in the body. An example is how a heart attack can cause pain in the left arm.
How you will calculate a 500 ml NS to be given over 6 hours?
The calculation is as follows; 500 ml(volume of infusion)x20(NO odf drops/minute _________________________________________ 360(6 hoursx20 =27.77 drops/m _________________________________________ TV(total volume)/TT (total time) = mL/hr 500 mL/6 hours = 83.3 = 83 mL/hr
What would happen if someone didn't have white blood cells?
your immune system would be more vulnerable to diseases and colds that the white blood cells protect you from ( common cold,flu etc.) and you would most likely have to see a doctor for a weekly ( if not daily) for a checkup depending on how many white blood cells you have and or need.
A 'eureka can' is basically a container with a spout. The spout is positioned a little distance below the top of the container. It is used to find the volume of usually an irregular obect by immersion into water and displacing a volume of water equal to the object's volume.
To find the volume of an object, the eureka can is filled with water. The water spills out level to the rim of the spout.
The obect is then lowered into the eureka can.
The name of the can comes from the legend that Archimedes when getting into his filled-up bath, he realised that the volume of water that was spilled over was equal to that part of him that was in the bath...and thus "Eureka!", Ive found it!
The eureka can is also known as a displacement vessel.
Hope this helps
Why is hemoglobin located inside red blood cells and not in free plasma?
Hemoglobin is located inside red blood cells because it needs to be contained within the cell to prevent it from leaking out into the plasma. This containment ensures efficient oxygen transport through the bloodstream, as the red blood cell membrane acts as a barrier that allows for controlled gas exchange. Having hemoglobin inside red blood cells also helps to optimize the oxygen-carrying capacity of the blood.
