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Flashcards related to tissue types, glands, muscle tissue, nervous tissue, skin layers, cells of the skin, glands of the skin, sensory receptors, burns and skin cancers.
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Epithelial Tissue
Covers body surfaces, lines cavities, and forms glands; functions include protection, secretion, absorption, and filtration.
Connective Tissue
Supports, protects, and binds tissues and organs; functions include structural support, storage, and immune defense.
Muscle Tissue
Responsible for movement; functions include producing body movement, maintaining posture, and generating heat.
Nervous Tissue
Detects stimuli and transmits impulses; function is communication via electrical signals.
Epithelial Cells
Squamous, Cuboidal, Columnar
Connective Tissue Cells
Fibroblasts, Adipocytes, Macrophages
Muscle Tissue Cells
Skeletal Muscle Fibers, Cardiomyocytes, Smooth Muscle Cells
Nervous Tissue Cells
Neurons and Glial Cells
Endocrine Glands
Releases hormones into the blood (e.g., thyroid)
Exocrine Glands
Releases substances through ducts (e.g., sweat, salivary glands)
Merocrine Glands
Secrete via exocytosis (e.g., sweat)
Apocrine Glands
Secrete via partial cell loss (e.g., mammary glands)
Holocrine Glands
Whole cell disintegrates to release contents (e.g., sebaceous glands)
Collagen Fibers
Tensile strength
Elastic Fibers
Flexibility/Stretch
Reticular Fibers
Supportive mesh
Skeletal Muscle
Voluntary, striated, multinucleated
Cardiac Muscle
Involuntary, striated, intercalated discs, 1 nucleus
Smooth Muscle
Involuntary, non-striated, 1 nucleus
Neurons
Transmit impulses
Glial Cells
Support, protect, nourish neurons
Stratum Corneum
Dead keratinized cells
Stratum Basale
Mitotic layer, melanocytes
Keratinocytes
Main structural cell, keratin production
Melanocytes
Pigment production
Langerhans Cells
Immune defense
Merkel Cells
Sensory
Sebaceous Glands
Oil secretion (sebum)
Eccrine Sweat Glands
Thermoregulation, watery sweat
Apocrine Sweat Glands
Found in armpits/groin, thicker sweat
Meissner Corpuscles
Light touch
Pacinian Corpuscles
Deep pressure
Merkel Discs
Steady pressure
Free Nerve Endings
Pain & temperature
1st Degree Burn
Epidermis only; generally no pain
2nd Degree Burn
Epidermis and part of dermis; blisters
3rd Degree Burn
Full thickness; nerve damage, white charred skin
Basal Cell Carcinoma
Most common, least dangerous
Squamous Cell Carcinoma
Can spread, more aggressive
Melanoma
Arises from melanocytes, highly metastatic & deadly