3. Epithelial tissue is composed of cells that are in close apposition with one another; among cells there is present only a small amount of intercellular substance e pithelial cells are usually of regular form without extensive cytoplasmic processes a dhesion between the cells is very strong e pithelia derive from the all germ layers Connective and supporting tissues unlike epithelia, contain cells that are separated from one another by intervening spaces , these contain intercellular material or substance produced by cells t he intercellular substance consists of two components: fibers and amorphous ground substance c onnective and supporting tissues are always of mesenchymal origin Muscle tissue is composed of elongated cells that are able to contract f or this function cells are well adapted as they contain contractile proteins: actin and myosin cells or muscle fibers tend to be aggregated in bundles that are conspicuously different from the surroundings tissues t wo types of muscle tissue are distinguished: smooth , skeletal and cardiac s mooth muscle tissue derives from the mesenchyme, striated muscle tissue from the mesoderm Nerve tissue consists of nerve cells - neurons , and associated supporting cells of various type called neuroglia n eurons are highly specialized cells that show ability to receive, generate and transmit nerve impulses e xcept the microglia, the nervous tissue derives from the neuroectoderm

8. Simple epithelia: - simple squamous epithelium - simple cuboidal epithelium - simple columnar epithelium - pseudostratified columnar epithelium Stratified epithelia: - stratified squamous epithelium - stratified columnar/ cuboidal epithelium - transitional epithelium

12. a simple cuboidal epithelium

13. simple columnar epithelium with striated border (microvilli)

14. a simple columnar ciliated epithelium (with kinocilia)

17. stratified squamous epithelium stratified squamous epithelium (cornified) = epidermis

20. transitional epithelium

25. holocrine secretion the discharge of product is a ssociated with a destruction of the whole glandular cells cells of sebaceous glands

30. Multicellular glands

35. acinar / alveoli /

36. tubular /tubules /

37. tubuloacinar / tubules with serous demilunes /

38. tubule with serous demilune = demilune of Gianuzzi

43. cone cell rod cell

44. taste bud with taste cells hair cells (utricle)