Levels Of Organization (take-home-test) Flashcards
What is a cell?
The basic unit of structure, function and organization in living things
What are Tissues?
Cells with similar functions are grouped together as tissues.
Example: the muscle of arm contains millions of similar muscle cells, all
Organs
- brain
- trachea
- lungs
- oesophagus
- heart
- kidneys (behind gut)
- liver
- pancreas
- stomach
- intestine
- ovaries (in female)
- bladder
- testes (in male)
Organ System
Several different organs working together
Digestive system
Function: digest food and absorb the digested products into the blood
Organs: oseophagus, gut, liver, pancreas, intestine
Gas exchange system
(Ventilation)
Function: exchange oxygen and
carbon dioxide
Organs: lungs, trachea
Circulatory system
Function: transport materials around the body
Organs: heart, blood vessel, lungs
Excretory system
Function: filter toxic waste materials from the blood
Organs: kidneys, bladder
Nervous system
Function: coordinate the body’s actions
Organs: brain, spinal cord, nerves
Endocrine system
Function: glands secreting hormones, which acts as chemical messengers
Organs: ovaries (female), testes (male)
Reproductive system
Function: producing sperm in males and eggs in females, and allowing the development of the embryo.
Organs: ovaries (female), testes (male)
Organs (meaning)
A collection of several tissues carrying out a particular function is called an organ.
