Animal Tissue — Class 11 Maharashtra HSC Biology revision notes
A 6-page visual revision sheet for Animal Tissue, written for Class 11 Maharashtra HSC Biology. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
Page 1 as PDFA preview of page 1 — all 6 pages open full size in the app.
Animal Tissue in one look
epithelial, connective, muscular, nervous: the four tissues every organ is built from
Tissue and Histology
a tissue is a group of cells with the same embryonic origin, structure and function
tissues combine into organs, organs into organ systems, systems build the body
histology is the study of tissue structure and arrangement
four animal tissue types: epithelial, connective, muscular, nervous
cells are two kinds: somatic cells (all body cells except sperm and ova)
germ cells are sperm and ova, of the reproductive system
Epithelial Tissue, general features
epi (above) + thelium (layer of cells): the covering layer
covers inner and outer surfaces of the body and organs
cells compactly arranged, little intercellular matrix, rest on a non-cellular basement membrane
tissue is avascular but regenerates well
functions: protection, and also absorption, transport, filtration, secretion
two classes by layer count: simple epithelium (single layer)
compound epithelium (two+ layers), lowest layer rests on the basement membrane
Simple Epithelium, Six Types
Squamous: flat, thin, polygonal, serrated margin; fit like pavement tiles. Blood vessels, alveoli, coelom
Cuboidal: cuboidal cells, spherical central nucleus. Pancreatic/salivary ducts, kidney tubules
Columnar: tall, pillar-like, broad free end with microvilli, nucleus in lower half. Intestine, gall bladder, gastric glands
Ciliated: cuboidal/columnar with cilia on the free end, moves material in one direction. Trachea, oviduct
Glandular: columnar/cuboidal/pyramidal with secretory granules; unicellular (goblet cells) or multicellular (salivary gland)
These notes are not a standalone PDF. CapCompass plans Biology chapter by chapter against your real exam dates and free hours, and when the plan reaches Animal Tissue the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.