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Multiple Choice
In which layer of the epidermis are tactile discs primarily found?
A
Stratum basale
B
Stratum spinosum
C
Stratum corneum
D
Stratum granulosum
Verified step by step guidance
1
Understand the structure of the epidermis, which is composed of several layers: stratum basale, stratum spinosum, stratum granulosum, stratum lucidum (only in thick skin), and stratum corneum.
Recognize that tactile discs, also known as Merkel discs, are sensory receptors responsible for detecting light touch and pressure.
Recall that tactile discs are associated with Merkel cells, which are specialized epidermal cells.
Identify the location of Merkel cells within the epidermis. They are primarily found in the stratum basale, the deepest layer of the epidermis.
Conclude that tactile discs are primarily found in the stratum basale, as this is where Merkel cells reside and interact with nerve endings to form these sensory structures.