onent of the blood that carries: O most of the dissolved oxygen from the lungs dissolved inorganic ions that help nerves fire O enzymes that digest food for cells enzymes that ingest pathogens that might start an infection all of the above
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- Which of the following statements about red blood cells is false? a. They live about 120 days before being replaced. b. They lack a nucleus and other organelles when they are mature. c. They are replaced when the hormone EPO stimulates stem cells in bone marrow. d. They are replaced as part of a negative feedback loop in which kidney cells monitor blood oxygen levels e. All the above statements are true except b, because all cells require a nucleus in order to function properly.Which of the following would represent an "opportunity" for an opportunistic pathogen? exposure to SARS-CoV-2 in a crowded nightclub disinfecting skin before doing a blood draw use of a broad-spectrum antibiotic that kills most bacteria in the large intestine.An infection in the skin, such as a pimple, often produces pus. The major component of pus is: Toxic oxygen molecules released by macrophages Toxic nitrogen molecules released by macrophages NETs released by neutrophils Dead epithelial cells killed by lysozyme Dead and dying neutrophils
- Tissue fluid returns to the central circulation through a series of tubules whose nodes contain macrophages to clean out microbes. This fluid is called ___. plasma lymph fibrinogen bloodLabel the following figure including both anatomy (organs and structures) and physiology (function and biochemistry). What is the most important parts of what is shown here for keeping you alive? Justify PLEASE DONT PLAGIARIZE THE RESPONSEIn a normal individual, large proteins _____ blood capillaries and ______ lymph capillaries. Select one: a. can enter/leave; cannot enter b. cannot enter/leave; can enter c. can enter/leave; can enter d. cannot enter/leave; cannot enter
- The immune system relies on defensive white blood cells called antibodies blood leukocytes long term macrophagesThe system which allows for the tissue fluid to be cleaned by macrophages before it is returned to the bloodstream is the ___ system. exocrine digestive hematopoietic lymphaticWhich of the following chemicals is released by the body in response to exposure to allergens such as mold, pollen, and food? Leukotriene Mast cell
- How does pathogen infection result in the occurrence of fevers in a host? Group of answer choices Edema caused by the pathogen raises the body temperature. The pathogens break down the host's hypothalmus. The interaction between PAMPs and PRPs causes a respiratory burst. Pyrogens produced by the pathogen alter the host thermostat.Which of the following statements about blood cells are not correct? 1.Neutrophil is the rarest form of leukocyte present in the circulation in humans. 2.Lymphocytes, a larger leukocyte are the most abundant leukocyte type in circulation in humans. 3.Monocytes are a type of macrophages and can be identified by their typical 2 lobe appearance. 4.Platelets are larger fragments formed from the megakaryocytes in the bone marrow. 5.Leukocytes are active only in the circulation. 6.Average lifespan of leukocytes is 120 days. -Statements 1,2,4,5,6 are incorrect ---None of the mentioned statements are incorrect ---All of the mentioned statements are incorrect --Only statements 1.2.3.4 are incorrect.