Textbook Question
Why is visceral pain often perceived as cutaneous pain?
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Ch. 13 The Peripheral Nervous System
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 Autonomic 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 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 13, Problem 11e
Mark the following statements about the spinal cord as true or false. If a statement is false, correct it to make a true statement.
The corticospinal tracts are the main sensory tracts in the spinal cord.
Verified step by step guidance1
Step 1: Understand the corticospinal tracts. The corticospinal tracts are motor pathways that originate in the cerebral cortex and travel down the spinal cord to control voluntary movements, particularly fine motor skills. They are not sensory tracts.
Step 2: Review the main sensory tracts in the spinal cord. The primary sensory tracts include the dorsal column-medial lemniscal pathway (responsible for fine touch, vibration, and proprioception) and the spinothalamic tracts (responsible for pain, temperature, and crude touch).
Step 3: Evaluate the statement provided. The statement claims that the corticospinal tracts are the main sensory tracts in the spinal cord. Based on the information above, this statement is false because corticospinal tracts are motor tracts, not sensory tracts.
Step 4: Correct the false statement. To make the statement true, it should be revised to: 'The corticospinal tracts are the main motor tracts in the spinal cord.'
Step 5: Confirm the corrected statement aligns with anatomical and physiological knowledge. Ensure the corrected statement accurately reflects the function of the corticospinal tracts as motor pathways.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Corticospinal Tracts
The corticospinal tracts are major pathways in the central nervous system that carry motor signals from the brain to the spinal cord. They are primarily involved in voluntary motor control, particularly of the limbs and trunk. Understanding their role is crucial for distinguishing between motor and sensory pathways in the spinal cord.
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Sensory Tracts
Sensory tracts are pathways that transmit sensory information from the body to the brain. In the spinal cord, these include the dorsal columns and spinothalamic tracts, which carry sensations such as touch, pain, and temperature. Recognizing the difference between sensory and motor tracts is essential for accurately evaluating statements about spinal cord functions.
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True/False Statement Correction
Correcting true/false statements involves identifying inaccuracies and providing factual information to clarify misconceptions. In this context, it requires knowledge of spinal cord anatomy and function to accurately assess the truthfulness of the statement regarding the corticospinal tracts and to reformulate it correctly if it is false.
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Related Practice
Textbook Question
A receptor potential:
a. Always leads to an action potential
b. Never leads to an action potential
c. Causes hyperpolarization of the neuron
d. Leads to an action potential if the stimulus is strong enough
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Textbook Question
Place the following sequence of events for the detection of somatic sensation in the proper order. Place a 1 by the first event, a 2 by the second event, and so on.
a. ______The central process transmits the action potential to a second-order sensory neuron in the CNS.
b. ______The action potential is transferred to the central process in the posterior root ganglion.
c. ______The stimulus triggers an action potential.
d. ______The signal is transferred to other CNS sensory neurons for eventual perception and interpretation.
e. ______The action potential is propagated along the peripheral process of the neuron.
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Textbook Question
How do upper and lower motor neurons differ?
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Textbook Question
The tracts of the posterior columns decussate in the ________, whereas the tracts of the anterolateral system decussate in the ________.
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Textbook Question
List and describe the basic steps involved in producing movement, beginning with the upper motor neurons in the cerebral cortex.
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