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

Chapter 17- Blood Assignment -part 1-Answers - Chapter 17...

This preview shows page 1 - 3 out of 6 pages.

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 – A straw-colored, sticky fluid that is about 90% water and contains over 100 different dissolved solutes that include nutrients, gases, hormones, wastes and products of cell activity, proteins and electrolytes. Electrolytes which are inorganic ions comprise most of the solutes . Proteins – Makes up 8% of plasma weight and includes Albumin, Globulins and Fibrinogens; all of which are produced by the liver. Albumins make up 60% of the plasma proteins, Globulins (alpha, beta and gamma) make up 36% of the plasma proteins and Fibrinogen makes up 4% of the plasma proteins. Electrolytes – Most abundant solutes with cations that include sodium, potassium, calcium and magnesium; anions include chloride, phosphate, sulfate, and bicarbonate. They help to maintain the plasma osmotic pressure and normal blood pH. Gases – Respiratory gases include O 2 and CO 2. O 2 mostly bound to hemoglobin inside RBC’s while CO 2 is transported in that form or dissolved as bicarbonate ion or bound to RBC’s. Water – Accounts for 90% of plasma’s volume that absorbs heat and acts as a dissolving and suspending medium for solutes of blood. Nutrients – Materials absorbed from the digestive tract and transported for use throughout the body and include glucose, amino acids, fatty acids, glycerol, triglycerides, cholesterol and vitamins. Wastes – By-products of cellular metabolism and includes urea, uric acid, creatinine and ammonium salts. Formed Elements (cells): Briefly describe the functions for the following cells: 1
Image of page 1
Table 17.2 on page 647 in the textbook gives you a summary of the formed elements of the blood. Erythrocytes – Transports O 2 and CO 2 . Leukocytes – These cells are crucial to our body’s defense against disease and are divided into two major categories, namely, Granulocytes (neutrophils, eosinophils, basophils) and Agranulocytes (lymphocytes, monocytes). Platelets – Cytoplasmic fragments that seal small tears in blood vessels and are instrumental in blood 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 surface area of the cell and maximizes diffusion of gases. Watch the hemoglobin animation in the course documents.
Image of page 2
Image of page 3

You've reached the end of your free preview.

Want to read all 6 pages?

  • Winter '14
  • red blood cells

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture