Advertisements
Advertisements
प्रश्न
Classify neurons based on their structure.
उत्तर
The neurons are classified, based on their structures:
(A) Unipolar neurons
(B) Bipolar neurons
(c) multipolar neurons
(a) Unipolar neurons: Only one nerve process arises from the cyton, which acts as both axon and dendron. It is found in early embryos, but not in the adult.
(b) Bipolar neurons: The cyton gives rise to two nerve processes, of which one acts as an axon, while another acts as a dendron. Bipolar neurons are found in the retina of the eye and the olfactory epithelium of nasal chambers.
(c) Multipolar neurons: The cyton gives rise to many dendrons and an axon. Multipolar neurons found in the cerebral cortex of the brain.
APPEARS IN
संबंधित प्रश्न
Draw a labelled diagram of the following:
Brain
Renal cortex and Renal medulla [Parts of the nephrons present]
The number of Spinal nerves in a human being are :
(A) 31 pairs
(B) 10 pairs
(C) 21 pairs
(D) 30 pairs
Differentiate between the following pair of terms:
Receptor and effector.
Define the term Motor neuron.
Differentiate between following pair with reference to the aspect in bracket.
Sensory nerve and motor nerve (direction of impulse carried)
Given below is a structure, write its special functional activity.
Myelin sheath and ……………
What are the advantages of having a nervous system?
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Axon, Dendron, Photon, Cyton
Which of the following statements is wrong regarding conduction of nerve impulse?
Bipolar neurons are found in ______
Nerve cells do not possess ______
______ is the longest cell in our body.
Dendrons are the longest fibres that conduct impulses away from the cell body.
Identify the INCORRECT statement regarding multipolar neuron.
Which cells are responsible for formation of myelin sheath?
Select the motor nerves from the following group.
Electrical impulse travels in a neuron from
Rearrange the following in the correct order of involvement in electrical impulse movement-
Synaptic knob, dendrites, cell body, Axon terminal, Axon
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Axons : Nerve :: Cytons : ______.
