Domanda del libro di testo
Explain the reasons for the observed changes in blood flow velocity in the different regions of the circulation.
1032
views
Ch. 19 The Cardiovascular System: Blood Vessels
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testo
Marieb, Hoehn 11th EditionCh. 19 The Cardiovascular System: Blood VesselsProblema 20
Marieb, Hoehn 11th EditionCh. 19 The Cardiovascular System: Blood VesselsProblema 20Capitolo 19, Problema 20
Write an equation showing the relationship between total peripheral resistance, blood flow, and blood pressure.
Guida verificata passo dopo passo1
Understand the key variables involved: total peripheral resistance (TPR), blood flow (Q), and blood pressure (P). These are fundamental concepts in cardiovascular physiology.
Recall that blood flow (Q) through the circulatory system is driven by the pressure difference (ΔP) across the system and opposed by the resistance (R) to flow, which in this context is the total peripheral resistance (TPR).
Express this relationship using a form of Ohm's law adapted for fluid flow: \(Q = \frac{\Delta P}{R}\). Here, \(Q\) is blood flow, \(\Delta P\) is the pressure difference, and \(R\) is resistance.
In the systemic circulation, the pressure difference driving blood flow is the mean arterial pressure (MAP) minus the right atrial pressure (RAP), but often RAP is close to zero, so \(\Delta P \approx \text{MAP}\). Therefore, the equation becomes \(Q = \frac{\text{MAP}}{\text{TPR}}\).
Rearrange the equation to show the relationship explicitly between total peripheral resistance, blood flow, and blood pressure: \(\text{TPR} = \frac{\text{MAP}}{Q}\). This equation shows that total peripheral resistance equals the mean arterial pressure divided by blood flow.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Total Peripheral Resistance (TPR)
Total Peripheral Resistance refers to the resistance to blood flow offered by the systemic blood vessels, primarily the arterioles. It affects how hard the heart must work to pump blood through the circulatory system and is influenced by vessel diameter, length, and blood viscosity.
Video consigliato:
3:33
Peripheral Nervous System
Blood Flow
Blood flow is the volume of blood moving through a vessel, organ, or the entire circulation per unit time. It depends on the pressure gradient and the resistance within the vessels, determining how effectively oxygen and nutrients are delivered to tissues.
Video consigliato:
Percorso guidato
6:40Relationship Between Blood Flow, Pressure, & Resistance
Blood Pressure
Blood pressure is the force exerted by circulating blood on the walls of blood vessels. It is generated by the heart's pumping action and is a key factor driving blood flow through the circulatory system, influenced by cardiac output and peripheral resistance.
Video consigliato:
6:12Partial Pressure
Pratica correlata
Domanda del libro di testo
Physiologists often consider capillaries and postcapillary venules together.
a. What functions do these vessels share?
b. Structurally, how do they differ?
1213
views
Domanda del libro di testo
a. What blood vessels contribute to the formation of the hepatic portal circulation?
b. Why is a portal circulation a 'strange' circulation
957
views
Domanda del libro di testo
How does the control of blood flow to the skin for the purpose of regulating body temperature differ from the control of nutrient blood flow to skin cells?
869
views
1
rank
Domanda del libro di testo
Distinguish between elastic arteries, muscular arteries, and arterioles relative to location, histology, and functional adaptations.
1274
views
Domanda del libro di testo
Describe neural and chemical (both systemic and local) effects exerted on the blood vessels when you are fleeing from a mugger. (Be careful, this is more involved than it appears at first glance.)
1094
views