Tag: animal tissue

Bone, Blood and Lymph are all types of specialized connective tissue. But, nerve cells belong to a different set of tissues named nervous tissue. Nervous Tissues are the primary tissue of the nervous system that allows communication between various organs and tissues. It is composed of glial cells and neurons.

• The multipolar neuron is the neuron which has many dendrons and one axon.
• Multipolar neurons are the most common type of neuron. They are located in the central nervous system (brain and spinal cord) and in autonomic ganglia.
• Hence Multipolar neuron means The neurons which have many dendrons and one axon.
• So, the correct answer is 'with many dendrons and one axon'.

Answer is option A i.e. "Axo-axonic"
Axo-axonic is a type of neural structure synapse between two axons. In case case, the axon of one neuron makes synapse with axon of the other neuron (i.e both, site of neurotransmitter release and site of receptor binding, are axons). It is essential for the transmission of nerve impulses. Axoaxonic junction modulate neuronal transmission by either inhibiting or facilitating depolarization at the presynaptic membrane.

Neurons feature many thin projecting fibres called axons, which penetrate deep into tissues. They are able to communicate with other cells by chemical or electrical means at synapses. Neuronal function is supported by neuroglia, specialized cells which provide nutrition, mechanical support, and protection.

Delicate dragonflies can rid the yards of aphids (small sap sucking insects) and mosquitoes and other insect pests.  Methane is produced in the rumen and hindgut of animals by a group of Archaea known collectively as methanogens, which belong to the phylum Euryarcheota. Among livestock, methane production is greatest in ruminants, as methanogens are able to produce methane freely through the normal process of feed digestion. A high BOD (biological oxygen demand) means that there is plenty of organic matter present. Microbial treatment is an integral part of the sewage disposal and hence cannot be said that man-made treatment of sewage is better. The cleaning power of lipase (or other enzyme containing) detergents increases markedly. The enzymes such as proteases, amylases, cellulases, and lipases are added to the detergents to improve their efficiency. 

Nerve cells carry out different function as, to receive the message from within or outside of the body, to transfer the messages from body part to the brain, to carry the signal from the brain to different parts of the body. Thus nerve cell helps the brain in control and coordination of the body.
Therefore, option D is correct. 

a) Multipolar neurons have more than two processes emanating from the neuron cell body. They are mainly located in central nervous system and are most common type of human neurons.

• Unipolar nerve cell means Nerve cell without dendron. They have only one structure extending from the soma(cell body).
• Unipolar neurons are common in insects, where the cell body is often located at the periphery of the brain and is electrically inactive.
  
• Hence Unipolar nerve cell means Nerve cell without dendron.
• So, the correct answer is 'Nerve cell without dendron'.

A complex network of nerve cells or neurons forms the nervous system. This system is responsible for transmitting electrical impulses throughout the body.