Chapter 7: Structural Organization in Animals Flashcards
What is tissue ?
a group of similar cells that can perform specific function is called
What are the four animal tissue?
1) Epithelial
2) Connective
3) Muscular
4) Neural
What are the two types of epithelial cells?
1) Simple
2) Compound (stratified)
What is the function of simple epithelium?
they are present in ducts , coeloms and tubes
What is the characteristic feature of compound epithelium?
they are multi layered
What are the types of simple epithelial tissue?
1) Simple Squamous
2) Simple Cuboidal
3) Simple columnar
4) Pseudopodia
What are the two types of compound epithelial tissue?
Stretchable
Non-Stretchable
What are the types of non stertchable epithelium?
1) Squamous
2) Cuboidal
3) Columnar
What are the features simple squamous epithelial tissue?
thin layered
flat
irregular
used for filtration and diffusion
Give some examples where simple epithelium is present?
intestine alveoli blood vessel( tunica intima) endocardium bowmans capsule loop of henle mesothelium peritoneum
What are the features of simple cuboidal tissue (structues)
centrally located nucleus
What are the functions of simple cuboidal epthelium?
ducts of glands ,tubular parts of nephron
secretion and absorption
What is the structure of columnar epithelium?
it is single layered and tall and slender cell
Where is the nucleus of the columnar epithelium present?
it is present in the base of the epithelium
Where is ciliated columnar epithelium found ?
they are found in the bronchioles and fallopian tube
What are hte two types of glands on the basis of hte number of cells ?
unicellular cells
multicellular cells
Give some examples of substances that is secreted by the exocrine galnds?
mucus , saliva , ear wax , milk, digestive juices
What is the meaning of cimpound epithelium?
they have more than one layer of cells
Give some examples where compound epithelium is found?
buccal cavity , pharynx, inner lining of the salivary glands `
What are the three types of cell juncitons?
tight junciton
adhering junction ‘
gap junction
intedigitation
What is the function of tight junction ?
they stop form leaking of substances