Can you describe nervous tissue Plant tissue Animal tissue Connective tissue
Answers
;;;;;;Nervous: Nervous tissue, also called neural tissue or nerve tissue, is the main tissue component of the nervous system. The nervous system regulates and controls bodily functions and activity and consists of two parts: the central nervous system comprising the brain and spinal cord, and the peripheral nervous system comprising the branching peripheral nerves. It is composed of neurons, or nerve cells, which receive and transmit impulses.
;;;;;Muscular:They are made up of the muscle cell. They are elongated and large size, so they are called as muscle fibre. They contain a special protein called contractile protein.
This protein help in the movement of body or limbs by contraction and relaxation.They are arranged parallel to each other so that they can work together.
it is of mainly 3 types :
a) Striated muscle: They are called as striped or skeletal or voluntary.
The entire muscle show alternate dark and light strips and therefore called stripped muscle.
They are attached to bones and are responsible for body movement, and therefore called skeletal muscles.
These muscles work according to our will, they are called as voluntary muscles.
b) Smooth muscle
They occur as a bundle or sheets of spindle-shaped cells.They have a single centrally located nucleus in the center of cytoplasm.
Delicate, contractile thread called myofibrils run longitudinally through the cell.They are found in walls of the alimentary canal, internal organs, ducts of glands, stomach, bronchi, iris of eyes.
c)Cardiac muscle
They are made up of branched, cylindrical and uninucleate cell.
Each cell is surrounded by sarcolemma, has cytoplasm with longitudinal myofibrils, intercellular spaces are filled with loose connective tissue and blood capillaries.
They have stripes or light and dark bands.They occur in the heart
;;;;;;;;Plant tissues can be broadly classified based on the ability of the cells to divide into Merismatic tissue and Permanent tissue.
a) Merismatic tissues consist of a group of cells that have the ability to divide. These tissues are small, cuboidal, densely packed cells which keep dividing to form new cells. These tissues are capable of stretching, enlarging and differentiating into other types of tissues as they mature. Meristematic tissues give rise to permanent tissues. Merismatic tissues can be of three types depending on the region where they are present: Apical meristems, lateral meristems, and intercalary meristems.
b) Permanent tissues are derived from the merismatic tissues and have lost their ability to divide. They have attained their mature form. They are further classified into two types: Simple and complex permanent tissues.
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