Tag: neural tissues

Questions Related to neural tissues

Show the pathway of electric impulse.

biology animal tissue types of neuron nervous tissue neural tissues

  1. $Dendrite \rightarrow Cell\ body\rightarrow Axon\rightarrow$ to its end

  2. $Cell\ body \rightarrow Dendrite\rightarrow Axon\rightarrow$ to its end

  3. $Axon\rightarrow Cell\ body\rightarrow Dendrite\rightarrow$ to its end

  4. $Dendrite\rightarrow Axon\rightarrow Cell\ body\rightarrow$ to its end

Show answer
Correct Option: A
Explanation:

The dendrites are the short, cytoplasmic extension which is present in the sensory organs and are responsible for the reception of the electric impulse. The dendrite passes the electric impulse to the cell body which passes the impulse to the axon. The axon is the long cytoplasmic extension of the neuron. There are telodendrons which are present at the tail of the axons. These regions can release neurotransmitters which can help in the transmission of the impulse through the synapse to the next neuron.

Thus, the correct answer is option A. 

Afferent nerve fibres carry impulses from 

biology animal tissue types of neuron nervous tissue neural tissues

  1. Effector organs to central nervous system

  2. Receptors to central nervous system

  3. Central nervous system to muscles

  4. Central nervous system to receptors

Show answer
Correct Option: B
Explanation:

In the nervous system, afferent neurons (otherwise known as sensory neurons), carry nerve impulses from receptors or sense organs toward the central nervous system.

Units of nervous system are ______________.

biology animal tissue types of neuron nervous tissue neural tissues

  1. Cytons

  2. Axons

  3. Neurons

  4. Dendrites

Show answer
Correct Option: C

Which is not a neuroglial cell?

biology animal tissue types of neuron nervous tissue neural tissues

  1. Oligodendrocyte

  2. Microglia

  3. Astrocyte

  4. Chondrocyte

Show answer
Correct Option: D
Explanation:

The neuroglia or glial cells are defined as supportive cells of the central nervous and peripheral nervous system that primarily support, protect and nourish the neurons. There are basically four types of neuroglial cells:-

Astrocytes, Oligodendrocytes, Microglia and Ependyma.While Chondrocytes are cells that make up the dense connective tissue that is present in the cartilage matrix.
So, the correct answer is 'Chondrocyte'.

Which of the following is not a connecting tissue?

biology animal tissue types of neuron nervous tissue neural tissues

  1. Blood

  2. Bone

  3. Lymph

  4. Nerve

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Correct Option: D
Explanation:

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.

So, the correct answer is 'Nerve'.

Which is not part of nervous tissue?

biology animal tissue types of neuron nervous tissue neural tissues

  1. Cyton

  2. Axon

  3. Myelin

  4. Intermedin

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Correct Option: D

Multipolar neuron means.

biology animal tissue types of neuron nervous tissue neural tissues

  1. With one dendron and one axon

  2. With many dendrons and one axon

  3. With one dendron and no axons

  4. With many dendrons and no axons

Show answer
Correct Option: B
Explanation:
  • 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'.

Direction of nerve impulse is reversed in nerve with.

biology animal tissue types of neuron nervous tissue neural tissues

  1. Axo-axonic

  2. Axo-dendritic

  3. Both A and B

  4. None of the above

Show answer
Correct Option: A
Explanation:

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.

Cells of the nervous system that are specialized to provide support arid protection are known as

biology animal tissue types of neuron nervous tissue neural tissues

  1. Schwann cells

  2. Axons

  3. Neurons

  4. Neuroglia

Show answer
Correct Option: D
Explanation:

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.

So, the correct option is 'Neuroglia'.

Read the following statements (a-e) and answer the question which follows them 
(a) Dragonflies are used for controlling aphids 
(ii) Rumen is rich in methanogens 
(iii) increase in organic pollution increases BOD 
(d) man made technology for treatment of sewage is better than microbial treatment
(e)Lipases are commercially used in detergents 
How many of the above statements are correct? 

biology animal tissue types of neuron nervous tissue neural tissues

  1. one

  2. two

  3. three

  4. four

Show answer
Correct Option: D
Explanation:

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. 

So, the correct answer is 'Four'.