U1B endothelial/epithelial tissue

structure and function OF ENDOTHELIAL AND EPITHELIAL TISSUE

what is the structure of simple squamous epithelial tissue

lining tissue made from flattened specialised squamous epithelial cells

• one cell thick

why is the structure of simple squamous epithelial tissue ideal for

ideal for rapid diffusion

how can these epithelial tissue become damaged

damaged by smoking as it irritates lining and causes inflammation

what are ciliated columnar cells made up of

column shaped ciliated cells

what are ciliated cells

hair like structures covering exposed areas

what do ciliated epithelial cells do?

-line trachea

• protect lungs from infection

• does this by sweeping pathogens away from lungs

what does COPD stand for

chronic obstructive pulmonary disorder

symptoms of COPD

-breathlessness

• persistent coughing

• phlegm

what are goblet cells

found in respiratory and gastrointestinal tract that secrete mucus and help trap unwanted particles

what do goblet cells do?

protect lungs/prevent backing reaching alveoli

what do endothelial tissue do

movement of various substances

• products of digestion into blood capillaries

• blood plasma/tissue fluid in/out of blood capillaries

what do endothelial tissue line

• heart

• blood vessels

• lymphatic vessels

what do endothelial tissues provide

provide a short diffusion pathway

structure of Endothelial tissue

• flattened cells

• one layer thick

things that damage Endothelial cells

- carbon monoxide

-high blood pressure

• damage lining of the arteries

what is meant by atherosclerosis

Atherosclerosis is the blockage of an artery by the buildup of fatty plaques.

how does atherosclerosis develop

• deposits=atheroma build up enough to break through endothelial lining of artery

• plaque in lumen of artery

• reduces size of lumen/restrict blood flow