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Relate the structure of hemoglobin to its function.
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Ch. 19 Blood
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089
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TOC.tableOfContents
- Ch. 1 An Introduction to Anatomy and Physiology26
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization30
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure36
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses16
- Ch. 18 The Endocrine System20
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation29
- Ch. 22 The Lymphatic System and Immunity31
- Ch. 23 The Respiratory System12
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes32
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance23
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089Non è quello che usi tu?Cambia libro di testo
Capitolo 19, Problema 25
What is the role of blood in the stabilization and maintenance of body temperature?
Guida verificata passo dopo passo1
Understand that blood plays a crucial role in thermoregulation, which is the process of maintaining a stable internal body temperature despite external temperature changes.
Recognize that blood transports heat generated by metabolic activities in organs such as muscles and the liver to other parts of the body, helping to distribute heat evenly.
Know that when the body is too warm, blood vessels near the skin surface dilate (vasodilation), increasing blood flow to the skin where heat can be lost to the environment, thus cooling the body.
Conversely, when the body is too cold, blood vessels constrict (vasoconstriction), reducing blood flow to the skin to minimize heat loss and preserve core body temperature.
Additionally, blood can carry heat to the skin surface where sweat glands release sweat; evaporation of sweat from the skin surface removes heat, further aiding in temperature regulation.
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Thermoregulation
Thermoregulation is the body's process of maintaining a stable internal temperature despite external changes. It involves physiological mechanisms that balance heat production and heat loss to keep the body temperature within a safe range.
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01:07
Introduction to Thermoregulation
Heat Distribution by Blood Circulation
Blood plays a key role in distributing heat generated by metabolic activities throughout the body. By circulating warm blood from the core to the skin and extremities, it helps regulate temperature by either conserving or dissipating heat.
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6:11Functions of Blood
Vasodilation and Vasoconstriction
Vasodilation is the widening of blood vessels to increase blood flow and promote heat loss through the skin, while vasoconstriction narrows vessels to reduce blood flow and conserve heat. These processes help the blood regulate body temperature effectively.
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05:07Vasoconstriction & Vasodilation
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A difference between the A, B, and O blood types and the Rh factor is:
(a) Rh agglutinogens are not found on the surface of red blood cells
(b) Rh agglutinogens do not produce a cross-reaction
(c) Individuals who are Rh− do not carry agglutinins to Rh factor unless they have been previously sensitized
(d) Rh agglutinogens are found free in the plasma
(e) Rh agglutinogens are found bound to plasma proteins
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A test for prothrombin time is used to identify deficiencies in the extrinsic clotting pathway; prothrombin time is prolonged if any of the factors are deficient. A test for activated partial thromboplastin time is used in a similar fashion to detect deficiencies in the intrinsic clotting pathway. Which factor would be deficient if a person had a prolonged prothrombin time but a normal partial thromboplastin time?
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