Question

Different kinds of tissues organise to form an _______.

• A. organ
• B. organ system
• C. body system
• D. organelle

Answer 1

The correct option is A

organ

Groups of tissues organise to form an organ. Organs, such as the heart, the lungs, the stomach, the kidneys, the skin, and the liver, are made up of two or more types of tissue organised to serve a particular function. The layered walls of the small intestine provide a good example of how tissues form an organ. The inside of the intestine is lined by epithelial cells, some of which secrete hormones and digestive enzymes and others, absorb nutrients. Around the epithelial layer are layers of connective tissue and smooth muscle, interspersed with glands, blood vessels, and neurons.