answersLogoWhite

0

🧪

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

What does epinephrine do to the blood vessels?

Sympathetic stimulation (I'm guessing you mean your bodie's reaction in fight or flight) makes the blood vessles tighten, or constrict, hightening blood pressure. This is bad for you over long periods of time.

Is pepper good for you?

it matters how much you have if you eat very litle it is but if you use to much you will get diherrea

What is the term for high or low levels of sugar in the blood?

The medical term "hyperglycemia" is the term used to describe an abnormally high glucose (sugar) count in the blood.

(Hyper- = increase of; glycerol/glycemic/glucose = sugar; -emia = of or pertaining to the blood.)

Additional Information:

Hyperglycemia can be a symptom of various conditions such as diabetes mellitus, stress on the body systems after major organ damage (heart attack or stroke), sepsis (systemic reaction to severe infection), pre-diabetes, insulin resistance and it can also be a side effect of the use of some drugs, such as steroids.

Hypoglycemia is the opposite, when blood glucose levels are lower than ideal.

(Hypo- = under, below, beneath, deficient.)

How is the Rh factor of blood cells important?

About 85 percent of the people he tested had this protein, and about 15 percent lacked it. Like the A, B, AB, and O blood types, the presence of Rh factor is determined by a marker on the red blood cell. If your blood type is Rh positive, you have the Rh marker. If your blood type is Rh negative, you lack the marker on your cells. If you are Rh negative and ever received Rh positive blood, you would develop Rh clumping proteins in your plasma. This situation is potentially dangerous.

What molecules are in red blood cells?

Oxygen and Carbon Dioxide

  • Oxygen is taken up by the haemoglobin in red blood cells to be used for cellular respiration
  • Carbon dioxide is taken up by plasma in the blood and taken back to the lungs to be exhaled
  • Carbon Dioxide is a waste product of cellular respiration

Why is my blood count high?

It means your body is producing too many red cells and it is only a symptom and not a disease by itself. There are a variety of causes, some of which can be quite serious, including heart, lung, and kidney disease. Polycythemia vera, a blood marrow disorder, is another cause. However, other causes may be benign. For instance, if a person lives at a high altitude, he may develop more RBC's/hemoglobin to better enable him to take in the available oxygen. If a person is dehydrated, it may appear that his RBC count has risen, simply because the ratio of plasma to RBC's has been altered. Males tend to have higher RBC counts than women due to their higher levels of testosterone; males who abuse anabolic steroids and have elevated levels of testosterone will also have much higher RBC counts.

Obviously one must determine the cause of an elevated RBC count before treating the underlying condition.

http://answers.yahoo.com/question/index?qid=20071015193713AATBOvB

Why is the hemoglobin needed?

Hemoglobin in the blood is what transports oxygen from the lungs or gills to the rest of the body (i.e. the tissues) where it releases the oxygen for cell use. it alo removes carbon dioxide from the system.

What happens to glucose in the blood?

Glucose goes from the body to the blood. When carbohydrates are consumed, they are catabolised to mono saccharides (glucose, fructose, galactose are mono saccharides). These mono saccharides are absorbed into the body from the small intestine and circulated to the cells with the help of blood and lymph.

What promotes the release of oxygen from hemoglobin?

the primary factor in oxygen attachment to, or from, hemoglobin is the partial pressure of oxygen. actively metabolized cells will use oxygen in energy production thus enhancing oxygen release from hemoglobin to meet their energy production requirements.

What is the significance of a low platelet count?

A low platelet count generally puts an individual at high risk of bleeding, or hemorrhage. The underlying cause of a low platelet count could be several diseases ranging from a something benign to HIV or leukemia.

WHAT IS CONSIDERED HIGH MCV COUNT IN A BLOOD TEST?

The reference range for MCV is 80-96 fL/red cell in adult. Anything over 100 would be considered to be high. High MCV indicates macrocytic (large average RBC size).
The common causes of macrocytic anemia (increased MCV) are: folate deficiency anemia, Vitamin B12 deficiency anemia, liver disease, hemolytic anemias, hypothyroidism, excessive alcohol intake, aplastic anemia or myelodysplastic syndrome.

Why does not blood clot in pleural fluid?

Hemorrhage within the pleural space generally does not clot due to mechanical defibrination and activation of fibrinolytic mechanisms. Clotting also is impaired by the disappearance of platelets within eight hours following hemorrhage (Source - 29th World Congress of the WSAVA; Study about Pleural Effusions).

What does whole blood consist of?

Blood is composed of: Red cells:are relatively large microscopic cells without nuclei. In this latter trait, they are similar to the primitive prokaryotic cells of bacteria. Red cells normally make up 40-50% of the total blood volume. They transport oxygen from the lungs to all of the living tissues of the body and carry away carbon dioxide. The red cells are produced continuously in our bone marrow from stem cells at a rate of about 2-3 million cells per second. Hemoglobin is the gas transporting proteins molecule that makes up 95% of a red cell. Each red cell has about 270,000,000 iron-rich hemoglobin molecules. People who are anemic generally have a deficiency in red cells. The red color of blood is primarily due to oxygenated red cells. White cells: or leukocytes , exist in variable numbers and types but make up a very small part of blood's volume--normally only about 1%. Leukocytes are not limited to blood. They occur elsewhere in the body as well, most notably in the spleen, liver, and lymph glands. Most are produced in our bone marrow from the same kind of stem cells that produce red blood cells. Others are produced in the thymus gland, which is at the base of the neck. Some white cells (called lymphocytes ) are the first responders for our immune system. They seek out, identify, and bind to alien protein on bacteria,viruses and fungi so that they can be removed. Other white cells (called granulocytes and macrophages ) then arrive to surround and destroy the alien cells. They also have the function of getting rid of dead or dying blood cells as well as foreign matter such as dust and asbestos. Red cells remain viable for only about 4 months before they are removed from the blood and their components recycled in the spleen. Individual white cells usually only last 18-36 hours before they also are removed, though some types live as much as a year. The description of white cells presented here is a simplification. There are actually many specialized sub-types of them that participate in different ways in our immune responses. Platelets: Platelets , or thrombocytes, are cell fragments without nuclei that release blood clotting chemicals at the site of wounds. They do this by adhering to the walls of blood vessels, thereby plugging the rupture in the vascular wall. They also can release coagulating chemicals which cause clots to form in the blood that can plug up narrowed blood vessels. There are more than a dozen types of blood clotting factors and platelets that need to interact in the blood clotting process. Recent research has shown that platelets help fight infections by releasing proteins that kill invading bacteria and some other microorganisms. In addition, platelets stimulate the immune system. Individual platelets are about 1/3 the size of red cells. They have a lifespan of 9-10 days. Like the red and white blood cells, platelets are produced in bone marrow from stem cells. Plasma: Plasma is the relatively clear liquid water (92+%), sugar, fat, protein and salt solution which carries the red cells, white cells, platelets, and some other chemicals. Normally, 55% of our blood's volume is made up of plasma. About 95% of it consists of water. As the heart pumps blood to cells throughout the body, plasma brings nourishment to them and removes the waste products of metabolism. Plasma also contains blood clotting factors, sugars, lipids, vitamins, minerals,hormones,enzymes,antibodies and other proteins It is likely that plasma contains some of every protein produced by the body--approximately 500 have been identified in human plasma so far. Bibliography: http://anthro.palomar.edu/blood/blood_components.htm

How can white blood cells protect us against disease?

this is a very complicated and divers question. a disease is your body going out of it's equilibrium. this can be a cause of many events. the most common of which are pathogens, autoimmune problems and tumors. if we take the autoimmune issue from the answer (since its a situation in which the white blood cells are not working properly) we are left with pathogens (virus, bacteria, parasite, trauma) and tumor. to each type of pathogen or tumor there are different cells and singles that might be involve. but as a general principle, when a change in our body accrues it will stimulate the surrounding tissue and white blood cells that are in contact with the stimuli to release substances that will cause more white blood cells to arrive to the area, get activated and swallow and digest the stimuli or at least block it from spreading. also this process will make the bone marrow produce more white blood cells (leukocytes) and some of the leukocytes will duplicate (cloning). this process is called an inflammation and it is accompanied but other symptoms like fever and swelling that are either a result of the changes your body is going throu or a means to help your body to fight the disease.

What happens to white blood cells after you exercise?

Exercise sends antibodies and white blood cells (the body's defense cells) through the body at a quicker rate. As these antibodies or white blood cells circulate more rapidly, they could detect illnesses earlier than they might normally. The increased rate of circulating blood may also trigger the release of hormones that "warn" immune cells of intruding bacteria or viruses.

What is leukocytopenia?

Leukocytopenia- is a decrease in the number of white blood cells (leukocytes) found in the blood, which places individuals at increased risk of infection.

Could sleep Apnea cause high level of hemoglobin?

High Hemoglobin would allow you to carry more oxygen. so i don't think it would cause fatigue.

High hemoglobin can most definitely cause fatigue. I thought the same as the above answer until I was diagnosed with it BECAUSE of fatigue. But as is the case many times, too much of a good thing is bad for you. Causes are varied, from blood disorders to living in high altitude to simply not getting enough sleep (or not sleeping well such as if you have sleep apnea).

It can also be dangerous as it can clog your arteries if not kept in check. See your doctor!!

Fate of hemoglobin when red blood cells are destroyed?

Fate of haemoglobin

When RBC, become old they receptured mostly in spleen (as well as in the liver & bone marrow ) . The Hb is liberated from the ruptured RBC & phagocytozed by the phagocytes of RE system. Within the phagocytes the tetrapyrrole ring is opened up that is heam is converted into a compond where 4 pyrrole ring are lie side by side. The iron is still attached with the tetrapyrrole straight chain compound and probabily the globin also remains attached with it . Susequently both globin and iron are removed . The terapyrrole straight chain compound thus formed (free iron and globin) is called biliverdin. Biliverdin is Oxidized to form bilirubin . All these changes occur within the phagocyte of RE system. Bilirubin now comes out of the phagocyte and in plasma combine with albumin and is transported in the plasma as bilirubin- albumin complx. This complex is frequently called free bilirubin; The free bilirubin ultimately enters the liver and here the albumin is removed from the free bilirubin and the bilirubin is conjugated with glucornicacid a derivative of glucose) to form bilirubin gluccoronides, which is water soluble.

A small amount of bilirobin is conjugated with sulphate radicals to form bilirubin sulphate. The conjugated water soluble bilirabin is called "conjugated bilirubin". Glucoronyl transferase activity can be increased by the drug phenobarbitone, Hyperbilirubinaemia and kernicterus in the neonates can thus be sucessfully treated by phenobarbitone. All conditions which produce execusion erythrocyte destruction eg: Malaria, mismatched blood transfusion, erythroblastosis faetalis, bites by some types of poisonous snakes thus leads to excessive free bilirubinn formation & jauadice clinically called haemdytic jauxdice, develops. But the urine doesnot contain free bilirutrin in heamolytic jaundice, as the compound cannot pass the renal filter. Instead the urine contains excessive urobilinogen. The normal bilirubin concentration in plasma is below 0.5-1.0mg/100l, which rises greatly in haemolytic jaundice.

Where does carbon dioxide enter the body?

Carbon dioxide is a by-product of oxidative metabolism whereby sugars are broken down and their carbon molecules are transformed to C02 with the 02 coming from inhaled oxygen. Carbon dioxide leaves the body by diffusing from the tissue into the blood then leaving the body through the lungs.

What are the constituents of blood and their functions?

Red Blood Cells (RBC's) Erythrocytes- Completely dedicated to their job of respiratory gas (oxygen and carbon dioxide) exchange. White Blood Cells (WBC's) Leukocytes – Crucial to our defence against disease. Platelets- Essential for clotting process that occurs in plasma when blood vessles are ruptured or their lining injured.