Integumentary System (Lecture 1) Flashcards
The integumentary system is Organ systms composed of
skin, hair, oil, sweat glands, nails, and sensory receptors
The integumentary system Layers
Epidermis, Dermis and Hypodermis (sub q layer)
The integumentary system - Skin Basic functions
thermoregulation, blood reservoir protection cutaneous and sensations excretion and absorption synthesis of Vit D
The Layers of the skin - Epidermis: TIssue type/composition?
Epithelial
The Layers of the skin - Epidermis: Cells
keratinocytes, melanocytes,
Intraepidermal Macrophages (aka Langerhans)
Tactile Epithelial cells (aka merkel cells)
The Number of Melanocytes is the same in everyone the difference in skin color is from?
the amount of pigment the melanocyte produces
What are macrophages? what do they do? what are they apart of?
eat cellular debris. They are also part of the immune response
Epidermis Layers: (Stratum ______ 1-5) name all 5 layers in descending (deeper layer) order.
corneum lucidum granulosum spinosum basale
Epidermis // Stratum Corneum tissue characteristics ( tissue type cell contents)
stratified squamous
keratinocytes containing keratin
Epidermis // Stratum Lucidum characteristics ( tissue type cell contents)
only present in thicker skin,
clear dead keratinocytes and keratin
Epidermis // Stratum Granulosum characteristics ( tissue type cell contents)
cells release a lipid-rich water repellant secretion
Epidermis // Stratum Spinosum Characteristics ( tissue type cell contents)
location of intraepidermal macrophage cells (involved in phagocytosis)
Epidermis // Stratum Basale Characteristics ( tissue type cell contents)
Simple cuboidal or columnar
stem cells - cell division
Melanocytes & tactile epithelial cells
Dermis - Tissue composition
Dense irregular (Connective tissue)
Dermis - Cells
Fibroblasts
macrophages and mast cells
White blood cells: Eosinophils and Neutrophils