Biology Class on Lymphatic System

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Questions and Answers

What is the primary function of the lymphatic system?

  • Transport oxygen to tissues
  • Pumping blood throughout the body
  • Body defense against pathogens (correct)
  • Regulating body temperature

The sinoatrial node is also known as the heart's pacemaker.

True (A)

What is the role of lymph nodes in the lymphatic system?

Filter lymph and support immune function

The __________ valve prevents backflow of blood from the left ventricle to the left atrium.

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

Match the following components of the lymphatic system with their functions:

<p>Lymphatic vessels = Transport lymphatic fluid Lymph nodes = Filter lymph and activate immune responses Lymphatic organs = Produce and store immune cells Semilunar valve = Prevent backflow in blood circulation</p> Signup and view all the answers

Which component is NOT part of the human lymphatic system?

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

Lymph is a fluid that is formed from blood plasma and tissue fluid.

<p>True (A)</p> Signup and view all the answers

What is the primary function of the human lymphatic system?

<p>To transport lymph and help with immune responses.</p> Signup and view all the answers

The substance transported by the lymphatic system is called ______.

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

What is formed from the process of tissue fluid excess in the human body?

<p>Lymph (B)</p> Signup and view all the answers

The contents of lymph are the same as those of blood.

<p>False (B)</p> Signup and view all the answers

Name one health issue related to the human lymphatic system.

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

Which type of white blood cell is responsible for producing antibodies?

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

Monocytes are the smallest type of leukocyte in the blood.

<p>False (B)</p> Signup and view all the answers

What is the primary function of heparin in the blood?

<p>Prevents blood clotting</p> Signup and view all the answers

Arteries transport blood _____ of the heart.

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

Match the following white blood cells with their primary functions:

<p>Lymphocyte = Produces antibodies Monocyte = Ingests bacteria and dead cells Neutrophil = Fights inflammation and allergy reactions Eosinophil = Fights parasitic infections</p> Signup and view all the answers

Which leukocyte is known as the biggest type?

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

Capillaries are responsible for transporting blood away from the heart.

<p>False (B)</p> Signup and view all the answers

What is the function of lymphocytes aside from producing antibodies?

<p>Producing antitoxins</p> Signup and view all the answers

The smallest blood vessels in the body are called _____

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

Which statement correctly describes heparin?

<p>Prevents blood clotting (A)</p> Signup and view all the answers

Flashcards

Lymphatic system function

The lymphatic system helps the circulatory system by transporting lipids and supporting bodily defense.

Heart's pacemaker

The sinoatrial node (SA node) sets the heart's rhythm.

Heart valves function

Heart valves (tricuspid, bicuspid, semilunar) ensure one-way blood flow.

Heart's electrical pathway

The nodes (SA, AV), bundle of His, and Purkinje fibers transmit electrical signals for heart contraction.

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Lymphatic vessels and nodes

Lymphatic vessels carry lymph (fluid), and lymph nodes filter and clean lymph.

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Human Circulatory System Components

The human circulatory system includes the heart, blood vessels (arteries, veins, capillaries), and blood.

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Blood Composition

Blood is made of blood plasma and blood cells.

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Blood Vessel Types

Arteries carry blood away from the heart, veins carry blood to the heart, and capillaries connect arteries and veins.

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Heart Structure

The heart includes major vessels like the aorta, vena cava, pulmonary artery, pulmonary vein, and coronary arteries/veins.

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Tissue Fluid

Fluid that surrounds cells and is related to lymph.

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Lymph

A fluid containing waste products and components of the immune system.

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Lymphatic System

A system that includes lymph, lymphatic capillaries, and other components that work with blood circulation.

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Circulatory System Necessity

A healthy circulatory system is vital for delivering oxygen and nutrients to cells.

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Cytes in blood

Cells found in blood, including lymphocytes and monocytes.

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Monocyte

A type of white blood cell that ingests bacteria and dead cells.

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Lymphocyte

A type of white blood cell that produces antibodies.

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Agranulocyte

A type of white blood cell lacking granules.

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Phagocytosis

Process of engulfing and destroying bacteria and dead cells.

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Artery

Blood vessel that carries blood away from the heart.

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Vein

Blood vessel that carries blood towards the heart.

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Blood capillary

Tiny blood vessel where exchange of substances occurs.

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Endothelium

Inner lining of blood vessels.

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Leucocyte

Another name for white blood cell.

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Study Notes

Transport in Humans and Animals

  • This chapter covers transport systems in humans and animals, focusing on circulatory and lymphatic systems.
  • Mechanical hearts are artificial devices that mimic the human heart's function.
  • Components of the blood circulatory system are discussed.
  • The process of blood pumping by the heart is explained, including the role of various parts of the heart.
  • Blood clotting mechanisms are detailed.
  • Blood groups (ABO and Rhesus) in humans, along with their significance in blood transfusions, are explained.
  • Cardiovascular diseases like atherosclerosis, arteriosclerosis, angina, hypertension, myocardial infarction, and stroke are described as issues related to the human circulatory system.
  • The lymphatic system, its components, and their role in returning tissue fluid to the circulatory system are detailed.
  • The necessity of transport systems for complex multicellular organisms is justified.
  • Types of circulatory systems (open and closed) in multicellular organisms are discussed along with examples like insects, fish, amphibians and humans.
  • Differences and similarities in circulatory systems amongst these groups are highlighted.

Types of Circulatory System

  • Justifying the necessity of transport systems in complex multicellular organisms is explained.
  • Substances like those required and waste products transported by transport systems are indicated.
  • Types of circulatory systems in complex multicellular organisms (open and closed) are explained.

Circulatory System of Humans

  • Components of the human circulatory system (heart, blood vessels, blood) are described.
  • Blood composition (plasma, blood cells) and comparisons of blood vessel types (arteries, veins, capillaries) are explained.
  • The structure of the human heart and associated blood vessels are described.
  • Functions and roles of various heart parts (valves, septum) are elaborated.

Mechanism of Heartbeat

  • The human heartbeat mechanism, involving the sinoatrial node (pacemaker) and atrioventricular node, is described.
  • Forces causing blood circulation in humans, including the heart's pumping action and skeletal muscle contractions, are detailed.
  • Blood circulation in humans is explained.

Mechanism of Blood Clotting

  • The necessity for blood clotting is justified.
  • The blood clotting mechanism is explained in detail.

Blood Groups of Humans

  • ABO blood groups (A, B, AB, and O) are described, correlating them with blood donation.
  • The Rhesus factor and its importance in pregnancies are explained.
  • Necessity for a healthy circulatory system is detailed, including lifestyle choices to maintain its health.
  • Cardiovascular diseases (atherosclerosis, arteriosclerosis, angina, hypertension, myocardial infarction, and stroke) are elaborated, including their causes and implications.

Lymphatic System of Humans

  • The process of tissue fluid formation and lymph is explained.
  • Components of the lymphatic system (lymph, lymphatic capillaries, lymphatic vessels, lymph nodes, and lymphatic organs) are identified.
  • The function of the lymphatic system is detailed, stating why the lymphatic system complements the blood circulatory system.
  • Explanations of health issues related to the lymphatic system are given.

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