Animal Tissue Flashcards
what’s a cell?
basic structural and functional unit of an organism
what’s a tissue?
group of cells with similar structures that that work together to perform a shared function
what’s an organ?
structure made up of different tissues that work together to perform specific functions
what’s an organ system?
group of organs with related functions
what are the different types of tissues?
- epithelial
- muscle
- connective
- nervous
what’s the function of an epithelial tissue?
lines body surfaces, cavities and tubules. its important in absorption, secretion and protection
what’s the function of connective tissue?
supports body parts and connects them together
what’s the function of nervous tissue?
conducts nerve impulses by reacting to stimuli and important in coordinating bodily functions
what’s the function of muscle tissue?
allows the body and individual structures within the body to move
what are 4 types of specialised tissues in animals?
- cartilage
- ciliated epithelium
- squamous epithelium
- muscle
describe cartilage tissue.
strong tissue that is used to make tendons, bones and connective tissue.
describe ciliated epithelium.
made of ciliated and goblet cells, goblet produce mucus and cilia waft away mucus from the lungs
describe squamous epithelium.
made of smooth, flattened cells and lines inside of blood vessels and alveoli
describe muscle tissue.
made of muscle cells that all contract in same direction
whats the structure of an epithelium tissue?
supported by basement membrane which consists of simple (single) or stratified (multiple) layer of cells. this membrane consists of network blood vessels (provide O2 & nutrients to cell for absorption) and secretory epithelia (specialised to secrete substances - proteins)
what are the additional features
to the epithelial cells?
they are covered in small hair like projections called cilia which help move dust and mucus in the upper respiratory tract
what’s the location and function of simple squamous?
location - alveoli
function - allows substances to diffuse through
what’s the location and function of simple cuboidal?
location - lines kidney tubules
function - allows diffusion and secretion of molecules
what’s the location and function of simple columnar?
location - lines small intestine
function - allows for nutrient absorption and secretion of substances (mucus)
what’s the function and location of pseudo stratified columnar?
location - lines the trachea
function - allows impurities to be swept towards the throat due to secretion of mucus
what’s are the three main types of connective tissue?
- loose connective tissue
- dense connective tissue
- specialised connective tissue
what are the 2 examples of loose connective tissue?
- adipose
- areolar
what are the 2 examples of dense connective tissue?
- fibrous
- elastic fibres
what are the 3 types of specialised connective tissue?
- bone
- cartilage
- blood
location and function of adipose tissue
location - under skin around heart kidneys and mammary glands
function - stores fat and provides insulation
location and function of areolar tissue
location - under epithelium tissue
function - protects organs blood vessels and nerves, allows passage for nerves and blood vessels though other tissue and gives strength to epithelial tissue
location and function of fibrous tissue
location - ligaments
function - attaches bone to bones and provides support to joints
location & function of elastic fibres tissue
location - tendons
function - attaches muscle to bone
location & function of bone tissue
location - skeleton
function - forms skeleton, protects & supports main organs and achors the muscle
location & function of cartilage tissue
location - intervertebral disc, between ribs & sternum
function - smooths surfaces at joints & prevents collapse of trachea & bronchi
location & function of blood tissue
location - circulates in cardiovascular system
function - transports substances around the body
what is muscle
extremely specialised tissue containing cells that contract
what are the functions of muscle
allow movement, causes heart to beat, allows lungs to relax & expand, move food through digestive system