Textbook Question
Leukocytes are:
a. Nucleated cells that function in blood clotting
b. Nucleated cells that function in immunity
c. Anucleate cells that function in blood clotting
d. Anucleate cells that function in immunity
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Ch. 19 Blood
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 19, Problem 9
Match the following leukocytes with the correct definition.
__Basophil
__B lymphocyte
__Neutrophil
__Monocyte
__T lymphocyte
__Eosinophil
a. Destroys bacteria; directly phagocytoses bacteria
b. Responds to parasitic worm infection and mediates the allergic response
c. Activates all parts of the immune response; directly kills cancer or virally infected cells
d. Secretes inflammatory mediators
e. Agranulocyte that matures into macrophage
f. Agranulocyte that secretes antibodies
Verified step by step guidance1
Step 1: Understand the definitions provided for each leukocyte type. Each definition corresponds to a specific function or characteristic of the leukocyte.
Step 2: Match 'Basophil' with its definition. Basophils are known for secreting inflammatory mediators, so they correspond to definition (d).
Step 3: Match 'B lymphocyte' with its definition. B lymphocytes are agranulocytes that secrete antibodies, so they correspond to definition (f).
Step 4: Match 'Neutrophil' with its definition. Neutrophils destroy bacteria through direct phagocytosis, so they correspond to definition (a).
Step 5: Match 'Monocyte' with its definition. Monocytes are agranulocytes that mature into macrophages, so they correspond to definition (e). Match 'T lymphocyte' with definition (c), as T lymphocytes activate immune responses and directly kill cancer or virally infected cells. Match 'Eosinophil' with definition (b), as eosinophils respond to parasitic worm infections and mediate allergic responses.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Leukocyte Types
Leukocytes, or white blood cells, are crucial components of the immune system, responsible for defending the body against infections and foreign invaders. There are several types of leukocytes, including neutrophils, basophils, eosinophils, monocytes, and lymphocytes (B and T cells), each with distinct functions in immune response.
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Introduction to Leukocytes
Phagocytosis
Phagocytosis is a process by which certain immune cells, such as neutrophils and monocytes, engulf and digest pathogens or debris. This mechanism is vital for the elimination of bacteria and dead cells, contributing to the body's defense and tissue repair.
Recommended video:
2:19Phagocytosis
Adaptive Immunity
Adaptive immunity refers to the immune response that is specific to particular pathogens and involves lymphocytes, particularly B and T cells. B lymphocytes produce antibodies to neutralize pathogens, while T lymphocytes can directly kill infected or cancerous cells, playing a key role in long-term immunity.
Recommended video:
5:47Adaptive Immunity
Related Practice
Textbook Question
Number the steps of hemostasis in order, putting 1 by the first event, 2 by the second, and so on.
____The intrinsic/contact activation and extrinsic/tissue factor pathways produce factor Xa.
____The clot retracts.
____Thrombin converts fibrinogen to fibrin, and fibrin glues the plug together.
____Platelets are activated, and the platelet plug forms.
____Vasoconstriction and increased tissue pressure decrease blood flow through the vessel.
____Tissue plasminogen activator activates plasmin, which degrades fibrin.
____The common pathway produces thrombin.
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Textbook Question
Lymphocytes are derived from the _____ cell line, whereas the other leukocytes are derived from the _____ cell line.
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Textbook Question
Erythrocytes are derived from stem cells called____, circulate in the blood for approximately _______ days, and are destroyed by an organ called the _______.
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Textbook Question
Platelets are derived from cells called:
a. Thromboblasts
b. Leukoblasts
c. Megakaryocytes
d. Thrombokaryocytes
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Textbook Question
Anemia is defined as:
a. A decreased oxygen-carrying capacity of the blood.
b. A decreased iron content of the blood.
c. Decreased bone marrow function.
d. Abnormalities in hemoglobin.
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