An organ is a group of different tissues working together to perform a common function.
Explain, using an example, why the cardiovascular system is considered an 'organ system'
The cardiovascular system is considered an organ system because it consists of a group of organs that work together to perform the common function of transporting substances around the body.
Types of Organ systems:
Respiratory system.
Nervous system.
Cardiovascular system.
Skeletal system.
Muscular system.
Endocrine system.
Lymphatic system.
Digestive system.
Urinary system.
Integumentary system.
Reproductive system.
What are the levels of organisation in organisms, from least complex to most complex?
