Textbook Question
Blood is transported through the venous system by means of:
(a) Skeletal muscle contractions
(b) Decreasing blood pressure
(c) The respiratory pump
(d) A and C
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Ch. 21 Blood Vessels and Circulation
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011
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Table of contents
- Ch. 1 An Introduction to Anatomy and Physiology25
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization29
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure33
- 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 Senses15
- Ch. 18 The Endocrine System21
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation26
- Ch. 22 The Lymphatic System and Immunity25
- Ch. 23 The Respiratory System4
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes30
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance17
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011Not the one you use?Change textbook
Chapter 21, Problem 4
Baroreceptors that function in the regulation of blood pressure are located in the:
(a) Left ventricle
(b) Brainstem
(c) Carotid sinus
(d) Common iliac artery
(e) Pulmonary trunk
Verified step by step guidance1
Step 1: Understand the role of baroreceptors. Baroreceptors are specialized sensory nerve endings that detect changes in blood pressure by sensing the stretch of blood vessel walls.
Step 2: Identify the common locations of baroreceptors involved in blood pressure regulation. These are typically found in large arteries where they can monitor systemic blood pressure effectively.
Step 3: Recall that the carotid sinus, located at the bifurcation of the common carotid artery, contains baroreceptors that monitor blood pressure going to the brain.
Step 4: Recognize that the aortic arch also contains baroreceptors, but this option is not listed among the choices.
Step 5: Conclude that among the given options, the carotid sinus (option c) is the correct location of baroreceptors involved in blood pressure regulation.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Baroreceptors
Baroreceptors are specialized sensory nerve endings that detect changes in blood pressure by sensing the stretch of blood vessel walls. They play a critical role in maintaining cardiovascular homeostasis by sending signals to the brain to adjust heart rate and vessel diameter.
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Carotid Sinus
The carotid sinus is a dilated area located at the base of the internal carotid artery near the bifurcation of the common carotid artery. It contains baroreceptors that monitor blood pressure and relay information to the brainstem to regulate cardiovascular responses.
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Blood Pressure Regulation via the Brainstem
The brainstem, particularly the medulla oblongata, processes signals from baroreceptors and coordinates autonomic responses to maintain stable blood pressure. It adjusts heart rate, vascular resistance, and cardiac output through sympathetic and parasympathetic pathways.
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Related Practice
Textbook Question
The local control of blood flow due to the action of precapillary sphincters is:
(a) Vasomotion
(b) Autoregulation
(c) Selective resistance
(d) Turbulence
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Textbook Question
Large molecules such as peptides and proteins move into and out of the bloodstream by way of:
(a) Continuous capillaries
(b) Fenestrated capillaries
(c) Thoroughfare channels
(d) Venules
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Textbook Question
Identify the major arteries in the following diagram.
a. ___
b. ___
c. ___
d. ___
e. ___
f. ___
g. ___
h. ___
i. ___
Textbook Question
Cardiovascular function is regulated by all of the following except:
(a) Local factors
(b) Neural factors
(c) Endocrine factors
(d) Venous return
(e) Conscious control
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Textbook Question
The blood vessels that play the most important role in regulating blood pressure and blood flow to a tissue are the:
(a) Arteries
(b) Arterioles
(c) Veins
(d) Venules
(e) Capillaries