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 BLOOD The total voulume of blood is 4-5 liter in the body. it is _ _ _ _ % of the total body weight. Blood is slightly alkaline in nature The pH of the blood is  Blood is an important substance that help to sustain life. RBC (Red Blood Corpuscle) RBC's are biconcave or dumble shape and in the center it is damped. This dumble shaped structure increases the surface area for oxygen diffusion. WBC (White Blood Cells) Functions of WBC - Provides immunity - Fight against infection - Helps in allergy & asthma - Produce antibodies - Phagocytosis - Produce histamine & serotanin .

Introduction of blood https://www.cliffsnotes.com/study-guides/anatomy-and-physiology/the-cardiovascular-system/quiz-the-blood   Hematopoiesis https://www.cliffsnotes.com/study-guides/anatomy-and-physiology/the-cardiovascular-system/quiz-blood-formation Hemostasis https://www.registerednursern.com/pt-inr-vs-aptt-nursing-quiz/ https://oasisdiscussions.ca/2015/07/30/bp-7/ https://www.portea.com/labs/diagnostic-tests/bleeding-time-and-clotting-time-169/ https://www.cliffsnotes.com/study-guides/anatomy-and-physiology/the-cardiovascular-system/quiz-hemostasis https://study.com/academy/practice/quiz-worksheet-overview-of-hemostasis.html https://www.omjournal.org/PDF/OMJ-D-08-00065.pdf https://quizlet.com/430582404/hemostasis-success-book-questions-and-answers-flash-cards/ .

Lymphoid tissue lymphoid tissue , cells and organs that make up the   lymphatic system , such as white   blood   cells ( leukocytes ),   bone marrow , and the   thymus ,   spleen , and   lymph nodes . Lymphoid   tissue   has several different structural organizations related to its particular function in the immune response. The most highly organized lymphoid tissues are in the thymus and lymph nodes, which are well-defined   encapsulated   organs with easily identifiable architectures. In the spleen (a soft, purplish   organ   lying high in the abdomen), the lymphoid tissue is a cylinder of loosely organized cells surrounding small arteries. In the bone marrow this tissue is mixed with the blood-forming cells, and no organization is apparent. The most diffuse lymphoid tissue is found in the loose connective-tissue spaces beneath most wet   epithelial   membranes, such as those that line the   gastrointestinal tract   and the   respiratory system . In these spaces many cells of the lym

Composition of Blood         Fact: There are around 5 litres of blood in the average human adult body, though this can vary depending on various factors. During pregnancy for example, a woman may have 30 to 50% more blood than women who are not pregnant. Blood accounts for approximately 7/8% of the total weight of the human body. We all are well acquainted with the sight of blood: it’s a crimson fluid that flows from your body after a cut or a significant injury. Blood’s composition is incredibly complicated, furthermore, as we further progress with this article, you will realize the reason blood is essential to our survival. Blood is actually the delivery medium for dissolved gases, nutrients, hormones, and more.  Blood plasma is a yellow fluid component of blood that suspends the entire blood cells. The liquid element of blood transports cells and proteins throughout the body. Blood plasma accounts for approximately half of the body’s total blood volume and the

  The Importance of Organization in the Lab    If you manage a laboratory space, you know there can be a lot going on some days. Laboratories run dozens of experiments per day, involving all kinds of materials and equipment. This is where the importance of organization in the lab becomes apparent. Maintaining an organized space isn’t just for aesthetic purposes. Keep reading to find out how important it is for lab space to remain controlled and organized. Production and Efficiency Organization in the lab space goes hand in hand with productivity. Laboratories can be high-energy spaces at times with lots of moving parts (including employees). By organizing and optimizing your lab workspace layout , you can ensure that your lab doesn’t experience traffic jams. These types of hold-ups could result from anything, such as bumps, spills, and moments where individuals must wait for a piece of equipment to become available. By using organization to minimize these delays, your lab

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The Basics of HIV Prevention Last Reviewed:  August 9, 2021 Key Points People can get or transmit HIV only through specific activities, such as sex or injection drug use. HIV can be transmitted only in certain body fluids from a person who has HIV. These fluids are blood, semen, pre-seminal fluids, rectal fluids, vaginal fluids, and breast milk. To reduce your risk of HIV, use  condoms  correctly every time you have sex. Do not inject drugs. If you do, use only sterile injection equipment and water, and never share your equipment with others. If you do not have HIV but are at risk of getting HIV, talk to your health care provider about  pre-exposure prophylaxis (PrEP) . PrEP involves taking a specific HIV medicine every day to reduce the risk of getting HIV through sex or injection drug use. How is HIV transmitted? The person-to-person spread of HIV is called HIV  transmission . People can get or transmit HIV only through specific activities, such as sex or injection drug use. HIV can

HIV and AIDS: The Basics Key Points The  human immunodeficiency virus (HIV)  is the virus that causes HIV infection. HIV causes  acquired immunodeficiency syndrome (AIDS) , the most advanced stage of HIV infection. HIV is spread through contact with the blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, or breast milk of a person with HIV. In the United States, HIV is spread mainly by having anal or vaginal sex or sharing injection drug equipment, such as syringes or needles, with a person who has HIV. Antiretroviral therapy (ART)  is the use of HIV medicines to treat HIV infection. People on ART take a combination of HIV medicines (called an HIV  treatment regimen ) every day. ART is recommended for everyone who has HIV. ART cannot cure HIV infection, but HIV medicines help people with HIV live longer, healthier lives. HIV medicines can also reduce the risk of HIV  transmission . What is HIV and AIDS? HIV stands for  human immunodeficiency virus , which is the virus that