الفصل الثالث: الجهاز الغطائي (الجلد) - كتاب أنظمة جسم الإنسان - الصف 12 - الفصل 1 - المملكة العربية السعودية

الفصل الثالث

الجهاز الغطائي «الجلد» (The Integumentary system)

Layers of the epidermis:

وزارة التعليم Ministry of Education 2023 - 1447

--- SECTION: الفصل الثالث --- الفصل الثالث الجهاز الغطائي «الجلد» (The Integumentary system) --- SECTION: Layers of the epidermis: --- Layers of the epidermis: --- SECTION: وزارة التعليم --- وزارة التعليم Ministry of Education 2023 - 1447 --- VISUAL CONTEXT --- **DIAGRAM**: Layers of the epidermis Description: A detailed, color-coded diagram illustrating a 3D cross-section of human skin, revealing its various layers and associated structures. The diagram shows the epidermis, dermis, and hypodermis, with specific sub-layers of the epidermis labeled numerically. Structures like hair follicles, sebaceous glands, sweat glands, nerve endings, and blood vessels are visible within the dermis and hypodermis. X-axis: N/A Y-axis: N/A Data: The diagram visually separates the skin into three main regions: Epidermis (6), Dermis (7), and Hypodermis (8). The Epidermis is further subdivided into five distinct layers, labeled 1 through 5, from superficial to deep. The Dermis contains various structures such as hair follicles (with associated sebaceous glands and arrector pili muscles), nerve endings (e.g., Meissner's corpuscle, Pacinian corpuscle), and a network of blood vessels (arterioles and venules). The Hypodermis is shown as a fatty layer with larger blood vessels and nerve fibers. Key Values: Stratum corneum, Stratum lucidum, Stratum granulosum, Stratum spinosum, Stratum basale, Epidermis, Dermis, Hypodermis Context: This diagram serves as an anatomical reference for understanding the structure and organization of the human integumentary system, detailing the distinct layers of the skin and their associated components. It is fundamental for studying dermatology, physiology, and general biology.