Biology Chapter 18: The Circulatory System
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Questions and Answers

Gamma globulins are a class of plasma proteins called?

  • Fibrinogen
  • Antibodies (correct)
  • Albumins
  • Clotting proteins

Serum is blood plasma minus its ______.

clotting proteins

Which of the following is most likely to cause hemolytic anemia?

  • Heavy metals
  • Bacterial infections
  • Mushroom poisoning (correct)
  • Viral infections

It is impossible for a type O+ baby to have a type ______ mother.

<p>AB-</p> Signup and view all the answers

Which of the following is not a component of homeostasis?

<p>Agglutination (C)</p> Signup and view all the answers

Which of the following contributes most to the viscosity of blood?

<p>Erythrocytes (D)</p> Signup and view all the answers

Which of these is a granulocyte?

<p>Eosinophil (C)</p> Signup and view all the answers

Excess iron is stored in the liver as a complex called?

<p>ferritin</p> Signup and view all the answers

Pernicious anemia is a result of?

<p>lack of intrinsic factor</p> Signup and view all the answers

The first clotting factor that the intrinsic and extrinsic pathways have in common is?

<p>factor x</p> Signup and view all the answers

Production of all the formed elements of blood is called?

<p>hemopoiesis</p> Signup and view all the answers

The percentage of whole blood volume composed of RBCs is called the?

<p>hematocrit (packed cell volume)</p> Signup and view all the answers

The extrinsic pathway of coagulation is activated by _______ from damaged perivascular tissues.

<p>thromboplastin</p> Signup and view all the answers

The RBC antigens that determine transfusion compatibility are called ______.

<p>agglutinogens</p> Signup and view all the answers

The hereditary lack of factor VIII causes a disease called _______.

<p>hemophilia</p> Signup and view all the answers

The overall cessation of bleeding, involving several mechanisms, is called ___________.

<p>hemostasis</p> Signup and view all the answers

__________ results from a mutation that changes one amino acid in the hemoglobin molecule.

<p>sickle cell disease</p> Signup and view all the answers

An excessively high RBC count is called _________.

<p>polycythemia</p> Signup and view all the answers

Intrinsic factor enables the small intestine to absorb ______.

<p>vitamin B12</p> Signup and view all the answers

The kidney hormone __________ stimulates RBC production.

<p>erythropoietin</p> Signup and view all the answers

Study Notes

Blood Components and Functions

  • Gamma globulins: Class of plasma proteins that function as antibodies, essential for immune response.
  • Clotting proteins: Serum is blood plasma without clotting proteins, crucial for hemostasis.
  • Erythrocytes: Red blood cells are pivotal for blood viscosity, impacting circulation and oxygen transport.
  • Ferritin: A complex in the liver that stores excess iron, vital for preventing iron deficiency.

Blood Disorders and Conditions

  • Hemolytic anemia: Can be caused by mushroom poisoning, highlighting toxic impacts on red blood cells.
  • Pernicious anemia: Results from a lack of intrinsic factor, necessary for vitamin B12 absorption.
  • Hemophilia: A hereditary condition caused by the lack of clotting factor VIII, leading to increased bleeding risk.
  • Sickle cell disease: A genetic mutation alters one amino acid in hemoglobin, causing misshaped red blood cells and related health issues.
  • Polycythemia: Refers to an excessive rise in red blood cell count, which can lead to complications like increased blood viscosity.

Hemostasis and Coagulation

  • Thromboplastin: Activates the extrinsic pathway of coagulation in response to blood vessel damage.
  • Factor X: The clotting factor common to both intrinsic and extrinsic pathways, playing a key role in the coagulation cascade.
  • Hemostasis: Overall process to stop bleeding, involving vascular spasm, platelet plug formation, and coagulation.

Blood Types and Compatibility

  • Agglutination: Not part of homeostasis; a reaction that can occur in incompatible blood transfusions.
  • Agglutinogens: RBC antigens that determine blood type and transfusion compatibility, crucial for safe transfusions.
  • Type O+ parent: A type O+ baby cannot have an AB- mother, reflecting genetic inheritance patterns.

Blood Production and Measurement

  • Hemopoiesis: The process of producing all formed elements in the blood, including red blood cells, white blood cells, and platelets.
  • Hematocrit: Measurement of the percentage of whole blood volume made up of red blood cells, indicating red blood cell concentration.
  • Erythropoietin: A hormone released by the kidneys that stimulates the production of red blood cells, crucial in response to low oxygen levels.

Nutritional Aspects

  • Vitamin B12: Critical for proper red blood cell formation, its absorption requires intrinsic factor.

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Test your knowledge on the circulatory system with these flashcards focusing on blood components. Learn about gamma globulins, clotting proteins, and more as you explore key definitions and concepts. Perfect for students studying human biology and anatomy.

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