Proceeding deep from the most superficial structure, number the following in the correct sequence:
(a) ___ walls of vertebral canal
(b) _ dura mater
(c) _ subdural space
(d) _ epidural space
(e) _ pia mater
(f) _ arachnoid membrane
(g) _ subarachnoid space
(h) ___ spinal cord

Name: Fundamentals of Anatomy & Physiology
Author: Martini, Nath, Bartholomew
ISBN: 9780136874089

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Step 1: Identify the most superficial structure listed. The vertebral canal walls are the outermost bony structure surrounding the spinal cord, so this will be numbered first.

Step 2: Next, consider the spaces and membranes that lie just inside the vertebral canal walls. The epidural space is located between the vertebral canal walls and the dura mater, so it comes after the vertebral canal walls.

Step 3: Following the epidural space, the dura mater is the tough outer membrane covering the spinal cord, so it is next in sequence.

Step 4: Inside the dura mater is the subdural space, a potential space between the dura mater and the arachnoid membrane, so it follows the dura mater.

Step 5: Next is the arachnoid membrane, which lies just inside the subdural space, followed by the subarachnoid space beneath it, then the pia mater directly covering the spinal cord, and finally the spinal cord itself as the deepest structure.

주요 개념

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Anatomy of the Vertebral Canal

The vertebral canal is the bony passage formed by vertebrae that houses the spinal cord and its protective coverings. Understanding its layers from superficial to deep is essential to correctly sequence the structures, starting from the vertebral bones to the spinal cord itself.

Meninges and Their Layers

The meninges are three protective membranes surrounding the spinal cord: dura mater (outermost), arachnoid mater (middle), and pia mater (innermost). Each layer has associated spaces (epidural, subdural, subarachnoid) that are important landmarks in the sequence.

Spaces Between Meningeal Layers

Between the meningeal layers are specific spaces: the epidural space lies outside the dura mater, the subdural space is between dura and arachnoid mater, and the subarachnoid space lies between arachnoid and pia mater, containing cerebrospinal fluid. Recognizing these spaces helps in ordering the structures correctly.

Proceeding deep from the most superficial structure, number the following in the correct sequence:(a) _____ walls of vertebral canal(b) _____ dura mater(c) _____ subdural space(d) _____ epidural space(e) _____ pia mater(f) _____ arachnoid membrane(g) _____ subarachnoid space(h) _____ spinal cord

주요 개념

Anatomy of the Vertebral Canal

Meninges and Their Layers

Spaces Between Meningeal Layers

Proceeding deep from the most superficial structure, number the following in the correct sequence:
(a) ___ walls of vertebral canal
(b) _ dura mater
(c) _ subdural space
(d) _ epidural space
(e) _ pia mater
(f) _ arachnoid membrane
(g) _ subarachnoid space
(h) ___ spinal cord