Bio 253 exam 3 UPDATED ACTUAL Exam Questions and CORRECT Answers

Bio 253 exam 3 UPDATED ACTUAL Exam
Questions and CORRECT Answers
Functions of blood - CORRECT ANSWER - Transport it substances


Regulation of temperature


Gas exchange


Regulate ph and other hormones


Protects blood loss through clotting


Blood components - CORRECT ANSWER - 45% formed elements 55% plasma


erythrocytes, leukocytes, platelets, plasma


What do erythrocytes (RBC) do - CORRECT ANSWER - Hemoglobin (protein) binds to
RBC and carries O2


Leukocytes (wbc) function - CORRECT ANSWER - Whole cells that protect against
infection and foreign invaders.


Platelets (thrombocytes) function - CORRECT ANSWER - Clotting and coagulation



Plasma function - CORRECT ANSWER - Makes up blood volume and carries formed
elements .

, components of plasma - CORRECT ANSWER - albumin, globulin, fibrinogen ( water,
protein other solutions)


Albumin (plasma protein) functions - CORRECT ANSWER - Maintain osmotic pressure



Globulins ( antibodies) - CORRECT ANSWER - Essential for immunity mechanism bind
to a foreign object


Fibrinogen ( plasma protein) - CORRECT ANSWER - Role in clotting only when
necessary


Difference between plasma and serum - CORRECT ANSWER - Plasma has clotting
factors . Liquid minus formed elements and contains fibrinogen.


Serum is like plasma does not contain fibrinogen but has all electrolytes, antibodies, antigens,
hormines.


What is found in red bone marrow - CORRECT ANSWER - Erythrocytes
Leukocytes
Platelets


Characteristics of rbc - CORRECT ANSWER - Strange disc shake


Oxygen binding


Carries co2 to lungs


Acts as buffers