Chapter 17 assignment-Blood (1) - Chapter 17 Blood...

Chapter 17: Blood Assignment
For 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. Use
it to study the different kinds of blood cells. Under the External Links button
Blood Functions :
Understand the following functions of Blood.
i) Transport Nutrients, Hormones, Wastes
ii) Regulates Body Temperature
iii) Provides Protection (Immune Response, Hemostasis)
Blood Composition: write a short description of each of the following components of blood
Plasma- Non-living fluid matrix. 55% of whole blood. Least dense component; 90% water over 100
dissolved solutes. Straw colored, sticky fluid. Electrolytes outnumber the other solutes. Plasma proteins
are most abundant solutes by weight.
Proteins- Stays in the blood; not taken up by cells. Produced mostly by liver. 60% albumin; 36%
globulins; 4% fibrinogen. All contribute to osmotic pressure and maintain water balance in blood and
tissues. 8% of plasma weight.
Electrolytes- Most abundant solutes by number; cations include sodium, potassium, calcium,
magnesium, anions, include chloride, phosphate, sulfate and bicarbonate; help to maintain plasma
osmotic pressure and normal blood pH.
Gases- Oxygen and Carbon Dioxide; Oxygen mostly bound to hemoglobin inside RBC’s. Carbon
dioxide transported dissolved as bicarbonate ion or carbon dioxide, or bound to hemoglobin in RBCs.
Water- 90% of plasma volume; dissolving and suspending medium for solutes of blood; absorbs heat.
Nutrients- Materials absorbed from digestive tract and transported for use throughout the body;
includes glucose and other simple carbohydrates, amino acids, fatty acids, glycerol and triglycerides,
cholesterol and vitamins.
Wastes- Metabolic wastes are by-products of cellular metabolism such as urea, uric acid, creatinine
and ammonium salts .
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.
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