Chapter 17- Blood assignment -part 1- luginbuhl - Chapter 17 Blood Assignment For this assignment please read the chapter and answer the questions below

Chapter 17- Blood assignment -part 1- luginbuhl - Chapter...

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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- sticky, straw-colored fluid, that is 90% water. Contains different nutrients, hormones, wastes, gases, and things such as proteins, and electrolytes. Proteins- most are produced by the liver. Not “normally” taken up by cells to use as fuel. Albumin= 60% of plasma proteins (major blood protein that contributes to POP) and is a carrier to move molecules through “circulation”. Electrolytes- most abundant in solutes. Several cations such as sodium, potassium, calcium, magnesium as well as anions: chloride, sulfate, bicarbonate, and phosphate= all help maintain POP (plasma OSM pressure) and maintain normal blood Ph. Gases- Oxygen and Carbon Dioxide. O 2 usually bound to hemoglobin in RBC’s while CO 2 dissolves into bicarbonate ions. Water- 90% of plasma volume and is used as a dissolving medium for numerous solutes found in blood. Also absorbs heat. Nutrients- Usually absorbed from the digestive tract then transported, so that the rest of the body can use them. A few nutrients are: glucose, carbohydrates, amino acids, fatty acids, glycerol, and triglycerides, cholesterol, and vitamins even. All important things that we use throughout our body. Wastes- The end substances that are toxic from breakdown of substances and are cleared from bloodstream. Usually “excreted” from our bodies thanks to our kidneys!!! 1
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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 (transport O 2 ) Leukocytes- white blood cells, crucial to defend and protect our body from various things. Platelets- (not cells) but are cell fragments that help stop bleeding (essential to clotting). Red Blood Cell (RBC) = Erythrocyte : Figure 17.7 on page 638 in the textbook reviews the life cycle of RBC’s Red blood cells (erythrocytes) are biconcave disks and this shape increases the _ RBC __ _ count __ of the cell and maximizes diffusion of gases. Watch the hemoglobin animation in the course documents.
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