Textbook Question
Predict the effects of each of the following on systemic arterial blood pressure:
Blood loss from a bleeding ulcer
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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 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
Chapter 19, Problem 4a
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Erythrocytes are biconcave discs with prominent nuclei.
Verified step by step guidance1
Step 1: Begin by analyzing the statement provided: 'Erythrocytes are biconcave discs with prominent nuclei.' Break it into two parts: (1) Erythrocytes are biconcave discs and (2) Erythrocytes have prominent nuclei.
Step 2: Recall the structure of erythrocytes (red blood cells). Erythrocytes are indeed biconcave discs, which is a true characteristic. This shape increases their surface area for gas exchange and allows flexibility to pass through narrow capillaries.
Step 3: Evaluate the second part of the statement regarding nuclei. Erythrocytes in humans lack nuclei (anucleate) to maximize space for hemoglobin, which is essential for oxygen transport. Therefore, the claim that erythrocytes have prominent nuclei is false.
Step 4: Correct the false part of the statement. The corrected statement should read: 'Erythrocytes are biconcave discs without nuclei.'
Step 5: Summarize the process: The statement is partially true (biconcave discs) and partially false (prominent nuclei). The correction ensures the statement aligns with the anatomical and physiological characteristics of erythrocytes.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Erythrocytes
Erythrocytes, or red blood cells, are specialized cells in the blood responsible for transporting oxygen from the lungs to the body's tissues and returning carbon dioxide for exhalation. They are characterized by their biconcave disc shape, which increases surface area for gas exchange and allows flexibility to navigate through capillaries.
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Structure of Erythrocytes
Cell Structure
The structure of erythrocytes is unique as they lack a nucleus and most organelles in their mature form. This adaptation allows for more space to carry hemoglobin, the protein that binds oxygen. The absence of a nucleus also contributes to their biconcave shape, enhancing their efficiency in gas transport.
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Guided course
4:16Structure of the Eyeball Example 1
True/False Statements
In evaluating statements as true or false, it is essential to understand the factual basis of the claims made. A true statement accurately reflects scientific knowledge, while a false statement contains inaccuracies that can be corrected. In this case, the statement about erythrocytes being biconcave discs with prominent nuclei is false and requires correction to reflect their actual structure.
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Related Practice
Textbook Question
Ms. Wu, whose blood type is O−, requires a blood transfusion. Her family members volunteer to donate blood. Their blood types are as follows: her son, type B−; her husband, type B+; her daughter, type O+. Which family members could safely donate blood to Ms. Wu? Who could not? Explain.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The main function of erythrocytes is to transport oxygen on the protein hemoglobin.
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Textbook Question
A blood sample from your patient shows that she has decreased numbers of neutrophils. Predict the effects of this condition. How would it differ if numbers of T lymphocytes were decreased instead?
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Hemoglobin forms oxyhemoglobin when it binds to oxygen.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Hemoglobin consists of two polypeptide chains bound to a heme group.
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