(Introduction )
( Aim)
( Procedure)
( Conclusion)
( Materials Required)
The identification of different types of blood cells under the microscope
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Answers
Explanation:
Have you ever heard of something being referred to as a "life blood?" Well that's because blood is responsible for keeping nearly all of our body's cells alive and growing! Our blood is made up of four main components: white blood cells, red blood cells, platelets, and plasma - each of which serve specific purposes. Before getting into the blood science, however, it is helpful to learn a bit about circulatory systems! Then, let's take this opportunity to learn a bit about the Cockroach too!
Humans have a closed circulatory system which delivers oxygen, nutrients, hormones, and other essentials throughout our body. As its name suggests, a "closed" system means that all of our blood flows through arteries, veins, and capillaries. This means that our blood isn't just sloshing around inside of us, instead, our heart is forcefully pumping blood throughout our blood vessels. When you suffer from broken blood vessels, such as a cut or scrape, this is called a hemorrhage. An important ability of our body's blood is its ability to clot, or to create a blockage that stops the blood from hemorrhaging, giving the body time to regenerate cells and heal the injury. You may also hear the circulatory system referred to as the cardiovascular system. The cardiovascular system is just a more focused term, referring primarily to the heart (cardio) and blood vessels (vascular).
Now, to the blood! Remember, our blood is made up of four components: red and white blood cells, platelets, and plasma.
Red blood cells are responsible for keeping us alive! Our heart pumps our blood, our lungs oxygenate the red blood cells, and the red blood cells transfer the oxygen to cell tissues through a process called cellular respiration. Oxygen is important to us because it allows our cells to metabolize (transform) nutrients into energy that can fuel our body's movement and growth.
White blood cells are our body's defense system. They are our second line of defense against illness (the first being the external barriers like skin), destroying "pathogens" (disease causing material) that can damage us or make us sick. There are a variety of types of white blood cells in our body which specialize in targeting different kinds of pathogens. With different specializations comes different approaches to dispatching the pathogens. White blood cells can "eat" pathogens (they engulf the pathogen and then use enzymes to break it down), release antibodies to destroy them, or release antitoxins to combat the effects of certain pathogens.
Platelets are responsible for our blood's ability to clot. Platelets are tiny cells, about one fifth the diameter of a red blood cell. When you hemorrhage, they begin sticking together at the site of the damage until they have created a physical blockade, or a plug, preventing further blood from escaping. Then, once the damage has been healed up by the body, the clot is absorbed back into the body.
Plasma is the fluid that allows for the movement of cells throughout your circulatory system. It is mostly water, but also consists of proteins, sugars, electrolytes, and other essentials. Plasma makes up for a little more than 50% of your blood, making it the most plentiful component of your blood.
With our other experiments we have learned that cockroaches have a similar nervous system to humans, but does this hold true with the circulatory system? Unfortunately, for those of us who like to bask in the magnificence of cross-species similarities in nature, the cockroach, like all insects, does not have a circulatory system like ours. Instead, they have an open circulatory system, with body cavities full of hemolymph (the insect version of blood). You'll be happy to hear that cockroaches do have a heart and, relatively speaking again, it is even bigger than our own! The cockroach heart uses 13 chambers, compared to our four, to pump blood throughout the cockroach's body. Another important difference is that their hemolymph (blood) serves different functions, most notably, it is not responsible for carrying oxygen like ours is. Instead of oxygenating blood with their lungs and then dispersing it throughout the body like ours, cockroaches "breathe through their skin;" in fact, they don't even have lungs! Instead, they have a system of tubes, called tracheae, that deliver oxygen throughout the body. The tracheae are oxygenated through special pores on the cockroach's skin. This is what allows us to anesthetize cockroaches for the SpikerBox and RoboRoach experiments in ice water - since they don't breath like we do, they can't drown by being submerged in water (they can, however, die if they are completely submerged and are unable to reoxygenate through their skin over an extended period of time). Hemolymph also is important for the cockroach's immune system because of cells called hemocytes. Like white blood cells, hemocytes are responsible for protecting the roach from pathogens.
Answer:
Aim: identification of different type of blood cell under the microscope
Apparatus: Slide ,microscope ,sample of blood ,stains, glycerine,some amount of water, dropper
Procedure:
- Collect some amount of blood sample
- Collect the blood inthe dropper
- Drop the blood on the slide carefully
- Do prevent the slide from drying up add few drops of glycerine
- Place a slide on it. Placing a slide enables us to see clearly without any disturbance
- Now observe it under the microscope
- For more keen observation add few drops of stains
Observation:
We observe different type of cells under the microscope like
- RBC
- WBC
- Phatelets
Conclusion:
Hence we hve observed the blood cells