Chapter 4 Flashcards
Tissue
Group of cells that usually have a common origin and function together to carry out a specialized activities
4 types of tissue
Epithelial
Connective tissues
Muscular tissue
Nervous tissue
Cell junction
Points of contact between plasma membranes of tissue cells
5 types of cell junction
Tight junction
Adherens
Desmosomes
Hemidesmosomes
Gap junction
Two layers of Basement Membrane
Basal Lamina
Reticular Lamina
Two types of epithelium
Covering and lining epithelium or surface epithelium
Glandular epithelium
Three types of cell arrangements by layers in epithelium
Simple epithelium
Pseudostratified
Stratified
Cell shapes in epithelium
Squamous cells
Cuboidal cells
Columnar cells
Transitional cells
Two types of simple squamous cells
Endothelium
Mesothelium
Endocrine Gland
Secretes hormones into interstitial fluid where they diffuse into bloodstream (nu duct)
Exocrine Gland
Secretes product into duct that emptied onto surface of covering and lining epithelium or lumen of hollow organ
Structural classification of multicellular exocrine glands
1 Simple Glands
Simple tubular
Simple branched tubular
Simple coiled tubular
Simple acinar
Simple branched acinar
2 complex compounds
Compound tubular
Compound acinar
Compound tubuloacinar
Merocrine Glands
Gland secretion is synthesized in rough endoplasmic reticulum, processed and packaged in the Golgi apparatus and released by exocytosis
Apocrine Gland
Accumulation at apex of secreting cell, where portion of cell pinches off by exocytosis and releases secretion
Holocrine Gland
Accumulates in cytosol, as the cells mature they rupture and become secretory products
Connective tissue cells
Fibroblasts
Macrophages
Plasma cells(plasmocytes)
Mast cells
Adipocytes
Leukocyte
Ground substance
Components of connective tissues between cells and givers
Adhesive proteins
Link components of ground substance to one another and to surface of cells
Fibronectin
Main adhesive protein of connective tissues
3 types of fibers
Collagen fibers
Elastic fibers
Reticular fibers
Classification of connective tissue
Embryonic connective tissue
Mature connective tissue
Embryonic connective tissue
Mesenchyme
Mucous connective tissue
Mature connective tissue
Connective tissue proper
Loose connective
Dense connective
Supporting connective tissue
Cartilage
Bone tissue
Liquid connective tissue
Loose connective tissue
Areolar connective tissue
Adipose tissue
Reticular connective tissue
Dense connective tissue
Dense regular connective tissue
Dense irregular connective tissue
Elastic connective tissue
Supporting connective tissue: Cartilage
Hyaline cartilage
Fibrocartilage
Elastic cartilage
Supporting connective tissue:bone tissue
Compact bone
Spongy bone
Perichondrium
Covering of dense irregular connective tissue surrounding surfaces of most cartilage and contains blood vessels, nerves and sources of new cartilage.
Growth of cartilage
Interstitial growth
Appositional growth
Classification of bone
Compact bone
Spongy bone
Lamellae
Concentric ring of extracellular matrix made of mineral salts
Part of osteon
Lacunae
Small spaces between lacunae
Canaliculi
Network of canals with processes of osteocytes and projects into lacunae
Mucous membrane
Lines body cavities that open directly to exterior
Serous membrane
Lines body cavities that do not open directly to exterior, and covers organ that are within a cavity
Types of muscle tissues
Skeletal
Cardiac
Smooth
Electrical excitability
Ability to respond to certain stimuli by producing electrical signals
Tight junction
Weblike strands of transmembrane proteins fuse outer surface of adjacent plasma membrane to seal off passageways between adjacent cells
Adheren junction
Contains plaque, attaches to membrane protein and microfilaments of cytoskeleton
Desmosomes
Has plaque and cadherin that extends into the intracellular space between adjacent cell membranes and attaches to one another
Hemidesmosomes
Similar to Desmosomes, but attaches cells to basement membrane with integrin
Gap junction
Connexin forms tunnels (connexons) that connect neighbouring cells