Question

Draw a neuro unit of nervous tissue.Decribe it.

Answer 1

The basic unit of the nervous system is the nerve cell, or neuron. The basic function of theneuron is to transmit information. There are approximately 28 billion neurons in the human body penetrating every tissue in every part. Neurons vary greatly in size and shape, with the longest ones—those that extend down theleg as part of the sciatic nerve—measuring over one meter. All nerve cells have a similar structure.\"Neuron\"A basic nerve cell consists of a cell body, an axon, and many dendrites. Dendrites are thread-like branches that increase the surface area of the cell making it possible for it to receive many connections with adjoining nerve cells. Signals picked up by the dendrites travel through the cell and continue along the axon where they are transmitted to the next cell. Synaptic bulbs on the ends of the axons make connections with other nerve cells, with tiny gaps or synapses between the cells.

Answer 2

"Nephrons" are considered the elementary basic units of structural and functional origins of main excretory organ called Kidneys. Both the Human kidneys consist of more than 10 lakhs or 1 million nephronal structures in both the kidneys.  

A Nephronal structure or Uriniferous tubular structure are enclosing the renal tubule and the Malpighian corpuscle or a renal capsule which further consists of the Bowman's capsule or also called as Glomerular capsule and the stiffly formed capillaries consisted rounded coiled structure called as Glomerulus (in singular it's called a glomeruli vice versa) which're formed of anastomosingly interconnected complex plexus of thin vessels and are non-dependent on single loops of capillary tufts, instead formed of many connections in a network chain.

Nephron's main function is to excrete waste products and make it more non-complex so that, other parts of kidney can easily process them into waste products and separate ionic compounds also, reabsorb the essential nutrients, in all nephron is the most important structure in a human kidney and is the only one to take major parts of functions like protecting the osmoregulatory index of the body by removing or the excessive water present and not required in the body, etc.

"Neurons" are the basic elementary functional units and the main structural units of the whole nervous system and the neural tissues from which most of them equal to the lengths and dimensions of the body as a whole encompassing neural build-up. Neurons having more longer time taking processes or prolonged projections from a site are often honored as the longest living functionary cells of the Human Body. Our Nervous or Neural System consists of more than 100 billion neurons at time of birth and get reduced as per normal process of aging.  

Most of the following neurons are almost covered by the main connecting organ called Brain. Once the neurons are formed and developed to it's full extent they're never going to undergo divisions to increase in numbers or to recover from a accidental exposure and will stay in a starting phase called "interphase" for the remaining time of a Human's life.  

After the periodic time of Birth is completed, more new neurons are never going to undergo any formations, development, divisions, differentiations, etc. Some of those neurons consist of neuronal cytons in a "flask shaped structure" those are called "Purkinje cells", which're mostly occurring in the main region of Brain called the Cerebellum.