What are the four functions of the white blood cells

What are the four functions of the white blood cells

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White blood cell are immune system cells that defend the body against infectious diseases and foreign substances.They defend body.

What is the function of white blood cells?

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white blood cells have many functions. they fight off antigens, which are harmful to the body and they also fight off pathogens within the body. they contain manophages,t-cells,b-cells,antibodies,an… first and second line of defenses. these…

How do the functions of red blood cells and white blood cells dif…?

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Red blood cells contain haemoglobin, and they carry oxygen around the body, and also help to remove carbon dioxide from the body. White blood cells kill off infections and viruses in the body and provide antibodies. They also help to clot b…

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Can you guys PLZ help out with my Bio Blood and Circulation questions?

Q: 1. What is the primary function of white blood cells?2. What is the primary function of red blood cells3. What is the primary function of Platelets?4. What other functions does blood carry out?5. What are the four different blood types?6. What blood types can you safely be given in a blood transfusion7. What blood types can you not be given in a blood transfusion8. What are different type of blood vessels in the body?9. What does an artery do?10. What does a vien do?11. What does a capillary do?12. Which one has the thicker walls?13. Which one has the thinnest walls?14. Which has the biggest internal diameter ( Hollow part of the blood vessels)?15. Which is the biggest artery in the human body and where is it located?16. Which is the biggest vein in the human body and where is it located?17. What type of circulation are involved in these-HepaticGastricCephalicBrachialFemoralCoronaryPulmonary

A: 1. What is the primary function of white blood cells? white blood cells prevent infection by engulfing foreign matter like “germ” cells.2. What is the primary function of red blood cells? Red blood cells carry oxegen to tissues.3. What is the primary function of Platelets? Platelets help to clot blood to prevent blood loss at injury sites.4. What other functions does blood carry out? Blood carries waste to be filtered by the liver and kidneys. It also carries glucose to be used by the body for energy. It carries other nutrients as well. Blood functions as a way to exchange O2 and Co2 from the body by capillary exchage in the tissues andd the lungs.5. What are the four different blood types? A, B, AB, O6. What blood types can you safely be given in a blood transfusion? AB can receive any type of blood, while A can recieve A or O, B can receive B or O, and O can only receive O.7. What blood types can you not be given in a blood transfusion. O can ONLY recieve O- not A,B or AB. AB can receive any type. B can not receive A, and A cannot receive B.8. What are different type of blood vessels in the body? Veins, Arteries and Capillaries.9. What does an artery do? Arteries carry oxygen rich blood from the heart to the rest of the body.10. What does a vien do? A vein carries oxegen depleted blood from the body to the heart.11. What does a capillary do? A capillary is where gas and toerh exchange occurs between the blood and the tissues.12. Which one has the thicker walls? veins have thicker walls.13. Which one has the thinnest walls? Capillaries have the thinnest walls.14. Which has the biggest internal diameter ( Hollow part of the blood vessels)?arteries have the bigger internal diameter

AP Bio questions. award with POINTS?

Q: a) How does a concentration gradient affect diffusion? osmosis? what may affect the rate of diffusion/osmosis of different substanveces like glucose?b) When diffusion of dye molecules in a tank of water is complete, random movement of molecules continues (as long as the temperature remains the same). However, net movement stops. How do you reconcile these two facts?c) What is the limits the passage of water and other polar molecules and ions through the cell membranes? How do such molecules get into and out of the cell? Describes four possible routes.f) three ways does active tansport differ from simple e)Depending on the function of the cell, different kinds of cells have different amounts of certain organelles. for instance, in plantcells you would find an abundance of chloroplasts. Which organelles would you expect to find most prominent(abundance) in each of the following cell types: 1.muscle cells, 2.sperm cells,3. red blood cells, 4.white blood cells

A: a) Concentration gradients set up the driving force for diffusion. If molecules cannot cross the barrier, water will flow toward the higher concentration, as to dilute it (osmosis). Otherwise, molecules will move from a higher concentration to a lower concetration so as to equilize the two (diffusion). b). Molecules are moving but it is equal movement in both directions so the net movement is zero. c.)Charges on molecules and ions will limit their movement across the membrane. Cell membranes are made of a phospholipid bilayer. The outside is hydrophilic (water-loving) while the inside in hydrophobic (water-hating). Depending on the charge of the molecule or ion, it will not be able to cross the membrane. These molecules may either be transported inside by things like endocytosis or protein carriers located in the cell membrane. Certain molecules (and water) are freely permeably to the membrane and can diffuse through, others must be transported by either facilitated diffusion or active transport. f.) Active transport requires energy input and moves molecules AGAINST their gradients. This type utilizes a membrane protein whereas in simple diffusion, the molecules pass right through the membrane. e.) I can’t say with complete certainty off the top of my head so there’s no answer here. Do your own homework!! 😉

AP Biology questions help please!! 10 points!!?

Q: 1: Negative feedback responses tend to counteract the changes to which they respond. magnify the changes to which they respond drive processes or factors under homeostatic control back to a set point, counteracting the change to which they respond. operate only through the endocrine system. are necessary only higher animals. 2: Positive feedback systems drive processes or factors under homeostatic control away from a set point. drive processes or factors under homeostatic control back to a set point, counteracting the change to which they respond. operate only through the endocrine system. are necessary only higher animals. are not found in plants. 3: The constancy of an animal body’s internal environment is maintained by a single feedback mechanism a few, independent feedback systems a coordinated, integrated network of systems a homeostasis system the hypothalamus 4: Which of the following is NOT one of the major categories of animal tissue? endocrine tissue connective tissue epithelial tissue muscle tissue nerve tissue 5: Organs are formed of all four tissue types. of two or more tissues that operate independently of one another. of two or more tissues that function together. of systems. of all of the above. 6: What two systems are major players in and almost totally dedicated to the maintenance of homeostasis? skeletal and muscular nervous and circulatory excretory and endocrine endocrine and nervous nervous and muscular 7: Special sensory nerve endings in the skin of the hand are responsive to temperature. When an extremely hot object is encountered, nerves conduct this information to the spinal cord, which, in turn, sends a signal to skeletal muscle, causing it to contract and pull the affected part of the body away from the stimulus (often before the sensation of a burn is felt). In this scenario, the control center is… the nerve endings in the skin. the spinal cord. the skeletal muscles of the hand. the nerves conducting impulses from the sensory nerves to the spinal cord. the hormones in the blood stream. 8: In the above scenario, the sensor is… the nerve endings in the skin. the spinal cord. the skeletal muscles of the hand. the nerves conducting impulses from the sensory nerves to the spinal cord. the endocrine system. 9: It is important that the temperature of the human body is usually held at a normal temperature (98.6o F), except when we are sick with such things as the flu. What is the reason of this of this temperature change? the production of more white blood cells creates more heat the temperature control center resets the body’s set point temperature to help kill the infective microbes. infective microbes produce an increased amount of heat the disease itself produces heat in the body You drink more hot liquids during this time causing the temperature to increase. 10: Desert lizards rely on energy from the sun to regulate their body temperatures. Heat from the sun penetrates the skin and warms the blood, which is then circulated to the body core and other regions, warming them. When they need to cool their bodies, they move out of the sunlight until body temperatures drop. They must also, of course, be able to maintain water balance in extremely dry environments. Which of the following homeostatic features would you NOT expect to find in reptilian skin? sweat glands a thick layer of heavily keratinized cells a relatively thin dermis deep circulation of blood hairless skin

A: 1) drive processes or factors under homeostatic control back to a set point2) drive processes or factors under homeostatic control away from a set point.3) a homeostasis system4) endocrine tissue5) of two or more tissues that function together.6) endocrine and nervous7) the nerves conducting impulses from the sensory nerves to the spinal cord… i think, or the spinal cord. 8) the nerve endings in the skin.9) the temperature control center resets the body’s set point temperature to help kill the infective microbes. 10) sweat glands