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A&P midterm 1-1

OSU A&P midterm 1

What are the two major components of blood? What is the most abundant formed element? •Plasma = 50-60%- non-cellular fluid matrix (water & dissolved proteins, etc •Formed elements = 40-50%- include erythrocytes, leukocytes, and Platelets •Formed element = Erythrocytes = Red Blood Cells = RBC’s = 99.9% of blood’s formed elements
What are two important components of plasma? What are three proteins dissolved in plasma and what is the role of each? •Water (92%) and dissolved proteins (7%) •3 proteins o Albumins- maintain osmotic pressure o Globulins- immune proteins o Fibrinogens- clotting
What features of the RBC make it particularly well suited for its job? •Small size and shape provide large surface area/volume •97% hemoglobin/RBC- dry content (280 million hemoglobin molecules per RBC) •Lack mitochondria- don’t burn oxygen (increased efficiency) •Flexible & stackable
4. What is hemoglobin? Where is hemoglobin found in the body and what is its function? Where does hemoglobin pick up oxygen? Where does hemoglobin give up oxygen? •Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells in tissues. Hemoglobin transports oxygen from the lungs to peripheral tissues and carbon dioxide from peripheral tissues to lungs.
Created by: Jacobszoon