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Ch. 17 Review

Chapter 17 Textbook Review

QuestionAnswer
What are the main functions of blood Transportation, regulation, and protection
What are the transport functions of blood? Delivering oxygen, transporting metabolic waste products to elimination sites, and transporting hormones from the endocrine system to their tsarget organs
What are the regulatory functions of blood? Maintaining, appropriate body temperature, normal pH in body tissues, and adequete fluid volume in the circulatory system
What are the protective functions of blood? Prevents blood loss and infection
How does blood maintain body temperature? Blood absorbs and distributes heat throughout the body and towards the skin surface to encourage heat loss
How does blood maintain pH in body tissues? Blood proteins act as buffers to prevent abrupt changes in blood pH
What is blood classified as? Blood is classified as a fluid connective tissue
What are formed elements? Formed elements are cells and cell fragments suspended in the plasma
What happens if you put a sample of blood through a centrifuge? Centrifugal force will push erythrocytes down, causing plasma to float on top; plasma and erythrocutes are seperated be a buffy coat, which is made of leukocytes and platelets
What is a hematocrit? The percentage of total blood volume occupied by erythrocytes
What is the typical hematocrit of a blood sample? Erythrocytes normally constitute about 45% of the total volume of a blood sample
What percent of blood is leukocytes and platelets? Leukocytes and platelets contribute less than 1% of blood volume
What percent of blood is plasma? Plasma makes up 55% of whole blood.
What color is blood? High oxygen levels make blood scarlet red, while low oxygen levels make blood dark red
What is the pH of blood? The pH of blood is 7.35-7.45
How much of our total body weight is blood? Blood makes up 8% of body weight
What is a normal blood volume in the human body? Males have 5-6 litres of blood, while females have 4-5 litres
What are erythrocytes? Red blood cells (RBC)
What are leukocytes? White blood cells (WBC)
What are thrombocytes? Platelets
Created by: bbrdd
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