Tissues Flashcards
Function of epithelial cells (4)
Covers surface
Cells connected
Separate compartments
Forms glands
Classification of epithelial cells
Squamous Cuboidal Columnar Stratified Pseudostratified
Squamous is found
Skin
Capillaries
Alveolar
Glomeruli
Cuboidal is found
Exocrine gland Sweat gland Salivary gland Mammary gland Germinal gland
Columnar is found
Lining of stomach and intestines
Stratified is found
Oesophagus
Vagina
Pseudostratified is found
Respiratory tract
Uterus and Fallopian tubes
Connective tissue
Blood, bone, adipose
Muscle tissue
Contractile
Skeletal, smooth and cardiac
Nervous tissue
Communication Neurons Support cells Generates action potential Receives, generates and transmits electrical signal
Basement membrane
Basal lamina + Reticular lamina
Secondary roles of epithelium
Movement- cilia
Absorption- microvilli
Types of glands
Exocrine
Endocrine
Exocrine secretes into
secretes into tubes
Endocrine secretes into
secretes into blood
Features of exocrine gland
Simple (tubular, acinar)
Mucous glands- trachea
Serous glands- pancreas
Myoepithelial cells- salivary
Features of endocrin gland
Proteinacious secretion- insulin from pancreas
Steroid glands- adrenal cortex
Epithelial components of the liver
Hepatocytes arranged in rows between blood vessels
Secretion
Line blood vessels and line bile ducts
Epithelial components of kidney
Organised in nephrons
Filtration of blood, partial absorption of filtrate, overall release of urine
Line blood vessels
Line renal pelvis
Extracellular matrix
Elastin and Collagen
Semi solid gel
Collagen
30% body weight Type I tendons Type II reticulin Type IV basal lamina Form stroma and provide structural support
Elastin
Found in sheets
Microfibrils and amorphous component
Components of ECM
Proteoglycans
Hyaluronic acid
Glycoproteins (lamina, fibronectin)
Tissue fluid
Loose connective tissue
Fibroblast Macrophages Adipocytes Mast cells Mesenchyme cells Transient cells- WBC
Dense connective tissue
Regular- tendon
Irregular- sebaceous gland
