Animal tissue

Question 1

Epithelial Tissue

Answer 1

Epithelial tissues are seen on the outer layer of a body or organ surface. They form the outermost protective layer of most animals.

Question 2

Squamous Epithelium

Answer 2

Squamous epithelium form an extremely thin and flat layer of tissues. They are semi-permeable and thus, perfect for gaseous exchange. They are present in the lining of oesophagus and mouth.

Question 3

Cuboidal Epithelium

Answer 3

As the name suggests, they are cuboidal in shape and form the lining of salivary glands and kidney tubules. They provide mechanical support. They also form glandular epithelium when they form glands.

Question 4

Columnar Epithelium

Answer 4

These tissues line the organs which help in absorption and secretion, such as the lining of the intestines. They are made up of elongated cells. When cilia is present on these cells, they form ciliated columnar epithelium like those present in the respiratory tract.

Question 5

Stratified Squamous Epithelium

Answer 5

This kind of tissue is formed when multiple layers of squamous epithelium are arranged in a pattern. Our skin is made up of this kind of tissue.

Question 6

Muscular Tissue

Answer 6

These tissues make up our muscles which are responsible for almost all the movements that take place in the body.

Question 7

Striated/Skeletal Muscles

Answer 7

All the voluntary movements in our body are carried out by the striated or skeletal muscles. They are called skeletal because these tissues are mostly attached to the bones. They are long, cylindrical, unbranched with striations and multinucleated.

Question 8

Unstriated/Smooth Muscles

Answer 8

Almost all involuntary movements in the body are carried out by the smooth or striated muscles. They are long, smooth, spindle-shaped and uninucleate. We can find them in places like the alimentary canal and blood vessels.

Question 9

Cardiac Muscles

Answer 9

Cardiac muscles make up our entire heart. These muscles are involuntary in nature and show rhythmic contractions and relaxations. Structurally they may look quite similar to striated muscles but they are branched, uninucleated, and have intercalated discs.

Question 10

Connective Tissues

Answer 10

These tissues help in connecting different parts of the body. Examples include blood, bones, cartilages, tendons, ligaments, areolar tissues and adipose tissues.

Question 11

Nervous Tissue

Answer 11

Nervous tissue makes up the entire brain, spinal cord and nerves of the body. They are responsible for all sensations, consciousness, memory and emotion.

Question 12

Neurons

Answer 12

These are the cells that form the entire nervous system. Neurons consist of a cell body, axon and axon terminals.