Chapter 17: Blood AssignmentFor this assignment, please read the chapter and answer the questions below. Please type your answers in red or blue color. Please note that points may be deducted if answers are not submitted in these colors.There is a tutorial on blood cells in Blackboard under the Lab Tutorial button. Useit to study the different kinds of blood cells. Under the External Links buttonBlood Functions: Understand the following functions of Blood.i) Transport Nutrients, Hormones, Wastesii) Regulates Body Temperatureiii) Provides Protection (Immune Response, Hemostasis)Blood Composition: write a short description of each of the following components of bloodPlasma-a mixture of proteins, enzymes, nutrients, wastes, hormones and gases in the blood.Proteins-accounts for 8% (by weight of plasma; contributes to osmotic pressure andmaintains water balance in blood and tissues.Electrolytes-Most abundant solutes by number; cations includes sodium, potassium,calcium magnesium, anions include chloride, phosphate, sulfate, and bicarbonate, help tomaintain plasma osmotic pressure and normal blood pH.Gases-Oxygen and carbon dioxide; oxygen mostly bound to hemoglobin inside BBCs,carbon dioxide transported is dissolved as a bicarbonate ion or CO2, or bound tohemoglobin in RBCs.Water-90% of our plasma volume; dissolving and suspending medium for solutes of blood;absorbs heat.Nutrients-Materials absorbed from digestive tract and transported for use throughoutbody; include glucose and other simple carbs, amino acids, fatty acids, glycerol andtriglycerides, cholesterol, and vitamins.Wastes-Being toxic products of the breakdown of substances in the body, these are usuallycleared from the bloodstream and are excreted by the kidneys at a rate that balances theirproduction.Formed Elements (cells): Briefly describe the functions for the following cells:Table 17.2 on page 644 in the textbook gives you a summary of the formed elements of the blood.Erythrocytes-red blood cells that transport oxygenLeukocytes-white blood cells that act in various ways to protect the body1
Platelets-fragments that help stop bleedingRed Blood Cell (RBC) = Erythrocyte:Figure 17.7 on page 638 in the textbook reviews the life cycle of RBC’sRed blood cells (erythrocytes) are biconcave disks and this shape increases the _increases RBC count__ of the cell and maximizes diffusion of gases. Watch the hemoglobin animation in the course documents.The __hemoglobin__ protein binds oxygen in RBCs.When oxygen combines with hemoglobin, it forms bright red___oxyhemoglobin___. When hemoglobin releases the oxygen, it becomes dark red ___deoxyhemoglobin____.
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