Tissues Flashcards
Albinism
Genetic condition, lack of melanin, unable to produce it
Apoptosis
Programmed cell death, cells are supposed to die
Arrector Pili Muscles
Smooth muscle attached to hair follicles,
responsible for goose flesh (bumps)
Atrophy
Decrease in cell size and number
Avascular
Lacking blood supply, no blood vessels present; examples epithelium and cartilage
Axon
Single process of a neuron, carries nerve impulse away from cell body
Brown fat
Special fat for producing heat in newborns and infants
Chondroblasts
Produce cartilage
Chondroitin sulfate
Most abundant Glycosaminoglycan (GAG)
Collagen
Most abundant protein in the body
Cortex
Outer part above the medulla
Cyanosis
Blue coloration due to lack of oxygen or blood supply
Dendrite
Can be multiple, bring information into the neuron
Desmosome
“Spot welds”, attach cells more strongly together
Differentiation
Unspecialized cells becoming more specialized
Epidermal dendritic (Langerhans) cells
Macrophages present in the epidermis of the skin
Erythema
Red color of skin from increased blood flow
Erythrocytes
Red blood cells, transport oxygen
Fibroblasts
Produce fibers and ground substance
Fibrosis
Healing with scar tissue, primarily collagen fibers
Gap Junctions
Used by cells for communication
Glycosaminoglycan (GAG)
Large polysaccharides in ground substance
Goblet cells
Unicellular gland, produce mucous
Hyaluronic acid
Present in synovial fluid, vitreous body of eye
Hyperplasia
Increase in the number of cells
Hypertrophy
Increase in existing cell size, no cell number increase
Intercalated discs
Present in cardiac cells
Jaundice
Yellowing of skin and whites of eyes from excess bilirubin building, often from reduced liver function
Keloid
Excessive fibrosis, tends to recur when removed
Keratin
Protein present in epidermis, hair, nails
Keratinocytes
Produce keratin, most abundant cell type in the epidermis
Leukocytes
White blood cells, immune functions
Macrophages
Develop from monocytes, perform phagocytosis
Mast cells
Produce histamine and heparin
Medulla
Innermost part of a structure (hair, adrenal gland, kidney)
Melanin
Dark pigment produced by melanocytes
Necrosis
Premature, pathological cell death
Neuron
A nerve cell, transmit impulses
Osteoblasts
Produce bone (hard extracellular matrix)
Pallor
Pale, ashen color of skin from decreased blood flow
Parenchyma
The functioning, producing cells of above structures
Plasma cells
From B lymphocytes, make antibodies
Regeneration
Healing with the same type of tissue
Soma
Cell body of a neuron
Stroma
Framework portion of lymph nodes, spleen, bone marrow