Textbook Question
Which of the following is not an anticlotting agent produced by endothelial cells?
a. Prostacyclin
b. Protein C
c. Antithrombin-III
d. Warfarin
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Ch. 19 Blood
Erin C. 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 Autonomous 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 Nutrition and Metabolism7
- Ch. 24 The Urinary System39
- Ch. 25 Fluids, Electrolytes, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Erin C. Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Not the one you use?Change textbook
Chapter 19, Problem 18
Which antigens does a person with blood type A− have on the surface of his or her erythrocytes?
a. A antigens
b. B antigens
c. Rh antigens
d. Both a and c are correct.
e. All of the above
Verified step by step guidance1
Step 1: Understand the concept of blood type antigens. Blood type is determined by the presence or absence of specific antigens on the surface of erythrocytes (red blood cells). The two main antigens are A and B, and the Rh antigen determines whether the blood type is positive (+) or negative (−).
Step 2: Analyze the blood type given in the problem. A− blood type means the person has A antigens on their erythrocytes but does not have Rh antigens (negative Rh factor).
Step 3: Eliminate options that are inconsistent with the characteristics of A− blood type. For example, B antigens are not present in A− blood type, so option b can be excluded.
Step 4: Consider whether both A antigens and Rh antigens are present. Since the Rh antigen is absent in A− blood type, option d (both a and c) can also be excluded.
Step 5: Conclude that the correct answer must align with the presence of A antigens only, as this is the defining characteristic of A− blood type.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Blood Type Antigens
Blood type antigens are specific molecules found on the surface of red blood cells (erythrocytes) that determine an individual's blood group. The main types are A and B antigens, which classify blood into types A, B, AB, and O. The presence or absence of these antigens is crucial for blood transfusions and compatibility.
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Rh Factor
The Rh factor is another important antigen that can be present on the surface of red blood cells. It is denoted as positive (+) if the Rh antigen is present and negative (−) if it is absent. The Rh factor is significant in pregnancy and blood transfusions, as incompatibility can lead to serious health issues.
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Blood Type A−
A person with blood type A− has A antigens on their erythrocytes and lacks B antigens. Additionally, the negative sign indicates the absence of the Rh factor. This means that their blood can safely receive type A or O blood, but not type B or AB, and they can only receive Rh− blood to avoid complications.
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Related Practice
Textbook Question
Tissue plasminogen activator, urokinase, and plasmin are important components of:
a. Coagulation
b. Fibrinolysis
c. Platelet plug formation
d. Hemostasis
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Textbook Question
The two most clinically important groups of antigens on erythrocytes are the ______ and ______ blood groups.
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Textbook Question
Which of the following antibodies does a person with type O+ blood have in his or her plasma?
a. Anti-A antibodies
b. Anti-B antibodies
c. Anti-Rh antibodies
d. Both a and b are correct.
e. All of the above
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Textbook Question
Mr. Reczkiewicz has blood type AB−. Which of the following blood types could be safely donated to Mr. Reczkiewicz, assuming he has had prior exposure to Rh+ blood? (Circle all that apply.)
a. Type O+
b. Type A−
c. Type B−
d. Type AB+
e. Type O−
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