please provide me structural Organisation in animals introduction
Answers
Explanation:
Structural Organisation in Animals :-
Did you know that frogs do not drink water? This is because they absorb water through their skins! Now while we are aware of the human body and its structure all complex animals consists of the same basic four types of tissue. Let us learn about the structural organisation in animals and some special characteristics of other animals such as the frog.
1:-What is Epithelial Tissue?
Epithelial tissues are animal tissues. These tissues show the characteristics of animal cells. Here the cells are eukaryotic with a nucleus and have membrane-bound organelles. A cell wall is absent in animal cells. This lack of cell walls gives the animal cells flexibility. The cells of the tissue can take up different shapes to become specialized and perform specific functions.
Epithelial tissue is called as the epithelium. The tissue generally has a free surface and faces the body fluid inside or the outside environment. Epithelial tissues largely are covering tissues or tissues that line the inner lining of organs in the body. The intercellular matric is very less as the cells are compactly packed.
2:-Frogs
Frogs are amphibians, they can live both on land and in water. Their lives begin in water when they are eggs. From the eggs, tadpoles emerge, which also live in water. When these tadpoles fully develop they begin to live on land.
A frog is a poikilotherm, which means that it is a cold-blooded animal. The body temperature is not constant and varies according to their surrounding environment. So, when it is very cold, they lay in the sun to get warmer and when it is very hot, they get into the water bodies to cool themselves.
The habitat of a frog is quite varied and can be found all over the world, except maybe, of course, the Antarctic region. They are not marine animals. They can be found only in freshwater habitat. A frog goes into summer sleep called aestivation and winter sleep called hibernation, to escape the peak summer and winter conditions. The common Indian frog goes by the scientific name, Rana tigrina.
3:- Cockroach
As an arthropod, the body of a cockroach is divisible into three distinct regions. They are the head, thorax, and abdomen. There is a hard exoskeleton that is brown n color, made of chitin. The hardened plates of the exoskeleton are called the sclerites. A cockroach is a dioecious animal, with separate male and female sexes. The male species are longer in length while the females are slightly smaller than the males.
4:- Morphology of Earthworm
Earthworms have a reddish brown color with a cylindrical body. The body is also elongated and is pointed in the anterior region, while the posterior region is rounded. The body is segmented and there are about 100 to 120 metameres or short segments. There is a dark median mid-dorsal blood vessel that is seen on the dorsal surface of the body. The ventral surface of the body has genital openings or pores.
5:-Muscle tissue is a tissue that helps in the contraction of muscles. Muscle tissue gives muscles the ability to contract, by applying forces to other body parts. Movement is one of the properties of Muscle tissues. This specialized tissue contains muscle cells’ fibers which are connected in fibers and sheets. Muscle tissues are located between two bones. And the contraction property of muscle tissues helps both bones to move smoothly. Muscle cells are also called as myocytes.
6:- Neural Tissue
The neural tissue is a specialized tissue with some specialized functions. It is the main component of the nervous system – both the central nervous system and the peripheral nervous system. This includes the brain, spinal cord, and other types of nerves. In two words, if we have to describe the functions of the neural tissue, we can specify that integration and communication are the main functions of this specialized tissue.
7:- Connective tissue (CT)
Connective tissue (CT) is one of the four basic types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. It develops from the mesoderm. Connective tissue is found in between other tissues everywhere in the body, including the nervous system.
8:- Organs and Organ Systems.
Organ, in biology, a group of tissues in a living organism that have been adapted to perform a specific function. In higher animals, organs are grouped into organ systems; e.g., the esophagus, stomach, and liver are organs of the digestive system.