QQuestionBiology
QuestionBiology
A splinter that penetrates to the third layer of the epidermis of the palm is lodged in which layer?
a) stratum corneum
b) stratum granulosum
c) stratum basale
d) stratum lucidum
e) stratum spinosum
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Answer
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Step 1:I'll solve this problem step by step, focusing on the layers of the epidermis:
Step 2:: Understand the Layers of the Epidermis
The epidermis has five distinct layers, listed from the outermost to the innermost:
Step 3:
Stratum corneum (most superficial)
Step 4:
Stratum lucidum
Step 5:
Stratum granulosum
Step 6:
Stratum spinosum
Step 7:
Stratum basale (deepest layer)
Step 8:: Analyze the Problem Statement
The problem states that the splinter penetrates to the "third layer" of the epidermis.
Step 9:: Count the Layers
Counting from the outermost layer inward: - 1st layer: Stratum corneum - 2nd layer: Stratum lucidum - 3rd layer: Stratum granulosum
Step 10:: Identify the Correct Answer
The third layer of the epidermis is the stratum granulosum.
Final Answer
Explanation: When counting from the surface of the skin inward, the stratum granulosum is the third layer of the epidermis. This layer is characterized by cells containing keratohyalin granules and is part of the process of skin cell maturation and keratinization.
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