Tissues, organs and organ systems

What is the definition of a tissue in multicellular organisms?

A tissue is an aggregation of similar cells carrying out the same function.

Give an example of a type of tissue and its location.

Epithelial tissue, which lines the alveoli in the lungs.

What are organs made of in multicellular organisms?

Organs are aggregations of several tissues.

What is an example of an organ and its composition?

The eye, which contains many tissues needed for it to function correctly.

What are organ systems?

Groups of organs that work together to carry out a function.

Can you name an organ system and its components?

The digestive system, which includes the oesophagus, stomach, and accessory organs such as the pancreas and gall bladder.

What comprises multicellular organisms?

Multicellular organisms are collections of organ systems and tissues that work together to form an independent organism.