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7 Cards in this Set

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What is a tissue?

A tissue is a group of similar cells that are specially adapted to work together to carry out a particular function.

What are the four examples of tissues and where are they found?

Squamous epithelium - single layer of cells lining a surface. Found in lots of places such as the alveoli in the lungs


Ciliated epithelium - layer of cells covered in cilia. Found on surfaces where things need to be moved such as the trachea


Xylem tissue - a plant tissue that transports water around the plant and supports the plant. Contains xylem vessel cells and parenchyma cells


Cartilage - connective tissue found in the joints. Shapes and supports the ears, nose and windpipe

What is an organ?

An organ is a group of different tissues that work together to perform a particular function.

A leaf is a plant organ. What is it made up of and why?

Lower epidermis - contains stomata (holes) to let air in and out for gas exchange


Spongy mesophyll - full of spaces to let gases circulate


Palisade mesophyll - most photosynthesis occurs here


Xylem - carries water to the leaf


Phloem - carries sugar away from the leaf


Upper epidermis - covered in a waterproof waxy cuticle to reduce water loss

The lungs are an animal organ. What are they made up of and why?

Squamous epithelium tissue - surrounds the alveoli which is where gas exchange occurs


Fibrous connective tissue - helps to force air back out of the lungs when exhaling


Endothelium tissue - makes up the wall of the capillaries which surround the alveoli and line the larger blood vessels

What is an organ system?

Organs work together to form organ systems, each system has a particular function

Give two examples of an organ system and state what it is made up of

1) The respiratory system - made up of all organs, tissues and cells involved in breathing. The lungs, trachea, larynx, nose, mouth and diaphragm


2) The circulatory system - made up of organs involved in blood supply. The heart, arteries, veins and capillaries