Levels of organization

  1. Organelle Level
  1. Cellular Level
  1. Tissue Level
  1. Organ Level
  1. Organ system level
  1. Organism

small structures inside the cell that helps functioning

the small basic structure of any organism

integrated group of similar cells with common structures and functions

a task made from the performance of two ro more tissues

a vital body function made by the performance of multiple organs

multiple organs functioning together as one unit

epithelial tissue

image

closely packed sheets covering body surface and lining internal organs/cavities

functions: protect barrier, exchange air and fluid

has different # of cell layers and different shape

squamus = thin, exchange from diffusion

cubodial and columnar: secretion or absorption

basal lamina

apical surface

connective tissue

sparce population if cell scattered through matrix.

types

loose connective tissue

fibrous connective tissue

adipose tissue

cartilage

bone

blood

muscle tissue

nervous tissue

muscle fibers, that contains molecules of contractile proteins

types of muscle

skeletal muscle

cardiac muscle

smooth muscle

stimuli and transmit of information

found in brain and spinal cord

usually we call these tissues neurons

nucleolus, nucleus, ribosome, vesicle, rough endoplasmic reticulum, Golgi apparatus, smooth endoplasmic reticulum, mitochondria, vacuole, lysosome

animal cell, plant cell

heart, liver, lungs, kidney,

circulatory system, respiratory system

animals, human