Multiple Choice
Cutaneous, mucous, and serous are terms that refer to which of the following?
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1. Introduction to Anatomy & Physiology
Introduction to Anatomical Terms for Body Regions
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Which of the following correctly identifies the outermost layer of the cranial meninges?
A
Pia mater
B
Epidermis
C
Dura mater
D
Arachnoid mater
Verified step by step guidance1
Understand the cranial meninges: The meninges are protective layers surrounding the brain and spinal cord. They consist of three layers: dura mater, arachnoid mater, and pia mater.
Identify the outermost layer: The dura mater is the thickest and toughest layer, located directly beneath the skull. It serves as the outermost protective covering of the brain.
Differentiate the other layers: The arachnoid mater is the middle layer, positioned beneath the dura mater, and has a web-like appearance. The pia mater is the innermost layer, adhering closely to the surface of the brain and spinal cord.
Eliminate incorrect options: The epidermis is part of the skin and not related to the meninges. The pia mater and arachnoid mater are not the outermost layers, as they are located deeper than the dura mater.
Conclude that the correct answer is the dura mater, as it is the outermost layer of the cranial meninges.
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