Blood Composition and Functions

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What percentage of whole blood is primarily made up of plasma?

60%
50%
45%
55% (correct)

Which of the following elements are included in the formed elements of blood?

Erythrocytes, leukocytes, and platelets (correct)
Leukocytes and platelets
Erythrocytes and myocytes
Neurons and leukocytes

What is the term used to describe the percentage of red blood cells in the total blood volume?

Hemoglobin concentration
Platelet volume
Leukocyte count
Hematocrit (correct)

What is the composition of the buffy coat in whole blood?

Leukocytes and platelets (A) Signup and view all the answers

What is the main function of erythrocytes in the blood?

Oxygen transport (B) Signup and view all the answers

What is the primary role of platelets in blood?

Clotting blood (D) Signup and view all the answers

Leukocytes are primarily responsible for the transport of oxygen in the blood.

False (B) Signup and view all the answers

What percentage of whole blood is made up of formed elements?

45% Signup and view all the answers

The liquid portion of blood, making up about 55% of its total volume, is called __________.

plasma Signup and view all the answers

Match each type of formed element with its function:

Erythrocytes = Transport oxygen Leukocytes = Fight infections Platelets = Clotting of blood Hematocrit = Percentage of RBCs in blood volume Signup and view all the answers

What percentage of whole blood is represented by the buffy coat?

None of the above (D) Signup and view all the answers

Erythrocytes are also known as platelets.

False (B) Signup and view all the answers

What are the main components of blood?

Plasma and formed elements Signup and view all the answers

Blood is the body’s only _____ tissue.

fluid Signup and view all the answers

What shape do Erythrocytes take?

Biconcave discs Signup and view all the answers

What is the importance of erythrocytes biconcave shape?

Maximizes their surface area (D), Allows for efficient gas exchange (A) Signup and view all the answers

What is diapedesis?

Signup and view all the answers

Match the blood function to it's description.

Circulation = The movement of red blood cells through the tiny capillaries where gas exchange occurs Platelet aggregation = The process by which platelets clump together to form a hemostatic plug and stop bleeding at a site of injury Diapedesis = Process by which leukocytes move through the walls of blood vessels and into surrounding tissues Filtration = The passive movement of fluid through the vessel wall Signup and view all the answers

Match the Leukocyte cell type to it's function.

Neutrophil = Phagocytizes bacteria Eosinophil = Kills parasitic worms and destroys antibody complexes Basophil = Releases histamines and other mediators of inflammation. Lymphocyte = Mounts immune response by direct cell attack or antibodies. Signup and view all the answers

Flashcards

Blood composition

Blood is a fluid tissue composed of plasma and formed elements.

Plasma

The liquid portion of blood, making up about 55% of whole blood.