Tissues

Group of similar cells from the same origin that together carry out a specific function

Epithelium tissue, Connective tissue, Muscle tissue, Nervous tissue

Connective tissue proper and adipose tissue, Cartilage and bone, Blood

Germ layers → ectoderm, mezoderm, endoderm → the epithelium

Epithelium, Glands, Sensory organs

Simple, stratified

Squamos, Cuboidal, Columnar, Pseudostratified

Keratinising squamos, Squamos, Columnar, Cuboidal, Transitional

Layer/s, Basement, Membrane

Noncellular supporting sheet between the epithelium and the connective tissue

Acts as a selective filter determing which molecules from the capillares enter the epithelium, Acts as a scaffolding along which regenerating epithelial cells can migrate

Endothelium - blood and lymph vessels, Mesothelium - body cavities, Ependyma - cavities of the central nervous system and spinal cord

Covering, Glandular, Sensory

Occluding junctions, Adhering junctions, Communicating junctions

Zonula occludens (tight or occluding junction)

Zonula adherens, Macula adherens (desmosome), Hemidesmosome

Gap junction, Nexus

Close off intercellular space, Found at apical region of most epithelial types, Prevent molecules from passing between cells of epithelial tissues

Two disc - like plaques connected across intercellular space

Let small molecules move directly between neighbouring cells

Cilia, Microvilli

Long, moving structures

Short, non - moving structures

Extremely long microvilli

Respiratory tract, Female reproductive tract

In kidney → brush border, In intestin → striated border

Cellularity, Specialised contacts, Polarity, Support by connective tissue, Avascular, Innervated, Regeneration

Protection, Isolation of different environments, Transcellular transport, Absorption, Secretion, Selective permeability

Diffuse glands (single cells), Compound glands (group of cells)

Exocrine, Endocrine

Serous, Mucus, Mixed (serous and mucus), Hormones

Secretory vesicles realised via exocytosis (salivary glands)

Apical portion of the cell is lost (mammary glands)

Entire cell is destroyed during secretion (sebaceous glands)

Merocrine, Apocrine, Holocrine

Diffuse glands

Produce mucin, Protect and lubricate many internal body surfaces