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BIOS 255 - A&P 3 Exam Questions and Answers 2024/2025( A+ GRADED 100% VERIFIED).
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BIOS 255 - A&P 3 Exam Questions and Answers 2024/2025( A+ GRADED 100% VERIFIED).
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BIOS 255 - A&P 3What is the function of the cardiovascular system?
Transport of nutrients, gases, heat, hormones, waste, throughout body
Name the 2 major components of blood and state their average percentages in whole blood.
1. Connective tissue (RBC) - 45%
2. Plasma - 55%
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What are the 3 principal components of the cardiovascular system?
1. The medium - Blood (CT)
2. The pump - Heart (4 chambered)
3. The plumbing - Arteries, capillaries, and veinsterm-10
What are the functions of blood?
1. Transportation
2. Regulation (homeostasis, pH, temperature, water content)
3. Protection (against excessive blood loss through hemostasis + against pathogens through
WBC)
Describe the composition and functional importance of plasma.
- Plasma makes up 55% of whole blood.
- It is comprised of proteins:
, Red blood cells
Blood cells that carry oxygen from the lungs to the body cells.
Basophils
A circulating leukocyte that produces histamine.
Eosinophils
a white blood cell containing granules that are readily stained by eosin.
Monocytes
An agranular leukocyte that is able to migrate into tissues and transform into a macrophage.
Neutrophils
A type of white blood cell that engulfs microbes by phagocytosis
Lymphocytes
A type of white blood cell that make antibodies to fight off infections
Which of the following is not a factor in destroying attacking pathogens?
- chemotaxis
- the release of lysozymes
- erythropoiesis
- emigration
- phagocytosis
Erythropoiesis
An increase in white blood cell count above normal levels is called:
Leukocytosis
Which of the following is not an example of hemostasis?
- platelet plug formation
- maintenance of the normal body temperature
- applying a tourniquet
- vascular spasm
- blood clotting
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