Skip to main content

Animal tissue

Animal tissues 

A group of cells that have a typical origin and are similar in structure and performance is thought as tissue. Four sorts of animal tissues are found in any animal, name of them are given below. Nervous tissues 
Muscular tissues 
Connective tissues 
Epithelial tissues 

Nervous tissues 

These sort of tissues are specialized to transmit message in our body. 
It's responsible for the formation of the nervous system of animals. 
Neuron is the structural and useful unit of nervous system. 
Neurons will receive stimuli from outside or within the body, and it additionally conducts the received or self generated impulses throughout the body. 
Neurons don, 't divide as cell organ centriol isn, 't present in them, however, they need the facility of regeneration. 
All neuron have 3 mainparts. 
Cyton, soma of cell body 
It is the most portion in an exceedingly nerve cell with a distinguished nucleus and different necessary cell organelles that are histologist bodies, mitochondria, etc. Nissl's granules, clump of ribosomes are present in it. 
Dendrons
 These are the short protoplasmic extension of a cell bodies having more branches referred to as dendrites.
 It in the main receives the comming signals from the opposite neurons. 
Axons 
This is one long cylindrical method of uniform diameter. 
It is often lined by a super molecule medullated sheath, that id interrupted at bound points called node of ranvier. Neurotransmitter could be a matter made by the cell body of a nerve cell and keep within the axon of that nerve cell. 
It helps within the method of signal transmission between neurons. 
Some samples of neurotransmitters are acyl vitamin B complex, GABA, etc. 

Muscular tissue 

This is the first contractile tissues found in any animal and created of the muscle cells. 
Muscle cells are known as because the muscle fibers as they're elongated and huge sized. 
These muscle tissues area unit one in all 3 sorts supported their location, operate and structure. 
All the three sorts are delineate below.

  Unstriated muscle 

These are called the sleek or skeletal muscle. 
These are found within the wall of hollow visceral organs except that of the center. Such organs are alimentary canals, bile duct, blood vessels, tract and bladder etc. These muscles cause the movement of internal organs. 

Striated muscle 

These muscles are called stripped or skeletal, or voluntary muscles.
 These muscles are connected to the bone by the tendons and facilitate within the movement of limbs. 
They will contract and relax terribly speedily, thus offer force to locomotion and every one different voluntary movements of the body. 

These muscles get tired simply thanks to higher contracted nature and wish rest. Cardiac muscles 

These sort of muscles have each the characteristics of unstriated intercalated disk, densely stained cross bands are present in them. 
They are involuntary in nature. 
They contract speedily in an exceedingly rhythm and don, 't get fatigue. 
These are the muscles that form the wall of heart. 

Connective tissue 

The major supporting tissues in animal body and also the main operate of those of tissue is to attach one tissue with another.
It consists of cells, fibers and matrix, additionally called ground substance. These tissues create two hundredth to half-hour of the body elements. 
They van connect bones to every different, muscles to bones, bind tissues and might additionally offer support to vary elements of the body. 
The areas between the cells within these sorts of tissue is full of a non-living matrix which can be liquid as in the blood or solid as in bones or animal tissue. 
Blood could be a liquid connective tissue, whereas, bones are solid animal tissue.

  Epithelial tissue 

The covering tissue in animals and it occurs as a sheet and covers external and internal surface of all body organs. 
No animate thing areas are found as these tissues are closely packed. 
Three sorts of animal tissue cells are found in animal body. 
Squamous animal tissue 
Cuboidal animal tissue 
Columnar animal tissue 
The cells of animal tissue is also organized in an exceedingly multi layer as found within the lining of esophagus or in an exceedingly single layer as found within the stratum of skin. 
The main functions of the tissues' are-
Protective covering over the body. 
Absorption of biological process foods. 
Secretion. 
Diffusion of gases.

Comments

Post a Comment

Popular posts from this blog

Function of the hormones of adenohypophysis

Function of hormones of  adenohypophysis   Adenohypophysis is the real glandular part of the pituitary gland. The cells adenohypophysis secreted several hormones.  The hormones of adenohypophysis are 1. Somatotrophic hormone(STH): Growth hormone is secreted by the acidophill cells of the adenohypophysis.  It is polypeptide in nature consisting of large branches.  The molecular weight in human beings is 21500. The hormone regulates the growth of the body is thus it is necessarily concerned with the growth of skeleton, growth of muscle and growth of other organs.  Function - It stimulates the growth of skeleton in general by promoting ossification.  Hyper activity of gland in the young increases the growth of skeleton and this condition is known as gigantism.  Hypofunction of gland retrads skeletal growth and produce dwarfism.  The hormones promotes protein anabolism.  The hormone elevates the blood glucose level by stimulating glycog...
Post a Comment
Read more

Class 6th science chapter 2 note- Components of food

Class 6th science chapter 2 note Components of food In this chapter- What is nutrient?    Carbohydrates   Fats    Proteins    Vitamins     Minerals  Roughage and water Balanced diet  Deficiency disease What is nutrients? Every days is made up of one or more ingredients.  The ingredients are the edible part of plants or animals which contains some compounds which are needed by our body called nutrients.  The major nutrients of our food are carbohydrates, fats, proteins, vitamins and minerals.  Roughage and water are also needed by our body.  Not all the food materials that we eat have the same nutrients. Carbohydrates   There are many type of carbohydrate.  The main carbohydrates which are found in our food and in the form of starch and sugar.   It gives us energy to work so it is called energy giving food.  The food like rice, wheat, potato, sugar, sweet potato are rich in carbohydrates....
Post a Comment
Read more

Earthworms

Kingdom: Animalia Phylum: Annelida Class: Oligochaeta Order: Opisthopora Genus: Pheretima Species: posthuma Morphology   The term morphology deals with the study of the forms and therefore, the external structures of any living organism which has the dimensions, form, and structure.  There are 3 main sorts of morphology. Cellular morphology  Tissue morphology  Organ morphology  Animal morphology is healthier explained with the samples of earthworms.  Earthworm morphology  Earthworm may be a terrestrial invertebrate that is brownness in color that lives in the higher layer of dampish soil.  For example- Pheretima and Lumbricus.  Body form They have long cylindrical body divided into segments known as meta meres.  The ventral surface contains sex organ pore and dorsal surface contains middle dorsal line.  The first body phase {is known as|is named|is termed} peristpmium that contain mouth and fourteen — sixteen segments Greek dei...
3 comments
Read more