Tag: neural tissues

• Spinal cord and brain control all activities of our body. Spinal cord possesses nerves, which carry messages between the brain and the body.
•  The brain sends commands for the functioning of different organs of the body via nerves. 
• Therefore, they are made of nervous tissue. Hence, option B is correct.  

Cyton or cell body of a neuron possesses cytoplasm and nucleus. It contains many organelles, including granules called Nissl granules, which are composed largely of rough endoplasmic reticulum and free polyribosomes. Therefore, option D is correct. 

• The densely packed nerve cells present in the brain, spinal cord, and sense organs are called neurons. They are specialized for the conduction of nerve impulses and they are mainly of two types, sensory neurons, and motor neurons.

• The neurons are specialized for the conduction of nerve impulses. Conduction of nerve impulses is aided by synapse. 
• Synapse is a structure that allows a neuron to pass the electrical signal or chemical signal to another neuron. Therefore, option A is correct.  

• Dendrons are short, branched parts arising from cell body or cyton. Dendrons are many in number. 
• Neurolemma is the outermost nucleated cytoplasmic layer of Schwann cells. It surrounds the axon of the nerve cell. 
• Neurofibrils are long, thin, microscopic fibrils that run in every direction in the cell body and also extend in axon and dendrites. 
• Axon is a long, thin hair-like processes coming out of the cyton of a nerve cell. 

Cyton is a cell body of the neuron containing a nucleus, cytoplasm.   
Synapse is a structure that allows a neuron to pass an electrical signal or chemical signal to another neuron. 
Axon is a long, thin, hair-like process arising from the cell body of the neuron. 
A neuron is the functional unit of nervous tissue. It contains cyton or cell body, long, thin hair like the process called axon and many short branches called dendrites. Therefore, option C is correct. 

The longest cells in the human body are neurons. Neurons are cells within the nervous system and carry messages throughout the body. Although they range in size, some neurons are 3 feet long. These include the neurons that go from the skin into the spinal cord and up into the brain stem. Their impressive length makes neurons the longest cells in the body. 

The length of the muscle cell is 1-40 micrometers.
Nerve cells possess a cell body and one to many thin, fiber-like axons.
Some nerve cells possess axons as long as 1 meter. Therefore, option B is correct. 

Dendrite is a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body. A neuron is an electrically excitable cell that processes and transmits information through electrical and chemical signals. These signals between neurons occur via synapses, specialized connections with other cells. An axon is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. Myelinated axons are known as nerve fibers. The function of the axon is to transmit information to different neurons, muscles and glands. A neutrophil is a type of white blood cell, a type of granulocyte, and a type of phagocyte.