Questions and Answers
What is the term for the gray matter structure located at the back of the spinal cord?
What is the gray matter structure that connects the two sides of the spinal cord?
Gray Commissure
Which horn of gray matter is found on the sides of the spinal cord?
What is the name of the front horn of gray matter in the spinal cord?
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What structure runs along the anterior median fissure?
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What is the name of the central canal in the spinal cord?
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What is the name of the groove located at the back of the spinal cord?
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What is the name of the white matter area located at the back of the spinal cord?
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Which column of white matter is located on the side of the spinal cord?
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What is the white matter area located in the front of the spinal cord called?
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What is the name of the root that carries sensory information to the spinal cord?
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What is the name of the ganglion that contains the cell bodies of sensory neurons?
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What is the term used for the mixed nerve that carries both sensory and motor signals?
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What is the root that carries motor information away from the spinal cord?
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Study Notes
Gray Matter Structures
- Posterior Horn: Contains sensory neurons; processes incoming sensory information.
- Gray Commissure: Connects the two halves of the spinal cord; contains central canal.
- Lateral Horn: Present primarily in thoracic and lumbar regions; contains autonomic motor neurons.
- Anterior Horn: Contains motor neurons responsible for voluntary movement; larger in cervical and lumbar regions.
Key Anatomical Structures
- Anterior Median Fissure: A deep groove along the anterior aspect of the spinal cord; separates the left and right halves.
- Central Canal: A small, fluid-filled channel in the center of the spinal cord; contains cerebrospinal fluid (CSF).
- Posterior Median Sulcus: A shallow groove running along the posterior aspect of the spinal cord; aids in the division of the dorsal columns.
White Matter Columns
- Posterior Column: Contains ascending sensory pathways; responsible for proprioception and fine touch.
- Lateral Column: Contains both ascending and descending tracts; involved in motor and sensory transmission.
- Anterior Column: Primarily contains descending motor pathways; involved in voluntary movement control.
Nerve Roots and Ganglia
- Posterior Root of Spinal Cord: Contains sensory fibers that carry sensory information from the body to the spinal cord.
- Posterior Root Ganglion: Contains cell bodies of sensory neurons; located just outside the spinal cord.
- Spinal Nerve: Formed by the merging of dorsal (sensory) and ventral (motor) roots; serves as a pathway for both types of signals.
- Anterior Root of Spinal Nerve: Contains motor fibers that transmit impulses from the spinal cord to skeletal muscles.
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Description
Test your knowledge on the anatomy of the spinal cord with these flashcards focusing on various components like the posterior horn, gray commissure, and the central canal. Perfect for students studying neuroanatomy or preparing for exams.
