Define the terms:
(a) Coordination ....
(b) Synapse :
(c) Impulse
(d) Reflex action :
(e) Reflex arc :
Answers
Answer:
(a) the organization of the different elements of a complex body or activity so as to enable them to work together effectively.
(b) Synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.
(c) In classical mechanics, impulse (symbolized by J or Imp) is the integral of a force, F, over the time interval, t, for which it acts. Since force is a vector quantity, impulse is also a vector quantity. Impulse applied to an object produces an equivalent vector change in its linear momentum, also in the same direction.
(d) A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. A reflex is made possible by neural pathways called reflex arcs which can act on an impulse before that impulse reaches the brain.
(e) A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. A reflex is made possible by neural pathways called reflex arcs which can act on an impulse before that impulse reaches the brain.
Explanation:
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Answer:-
Define the terms:
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(a)Coordination:
Coordination is the working together of various agents of the body of an organism in a proper manner to produce an appropriate reaction to a stimulus is called coordination is called Coordination.
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(b)Synapse:
A nerve impulse is transmitted from one neuron to another through junctions called synapses. A synapse is formed by the membranes of a pre-synaptic neuron and a post-synaptic neuron is called Synapse.
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(c)Impulse:
The signal that travels along the length of a nerve fiber and ends in the release of neurotransmitters is called Impulse.
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(d)Reflex action:
1.Reflex action is a form of animal behaviour in which the stimulation of a sensory organ (receptors) results in the activity of some organ without the intervention of will is called Reflex action.
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(e)Reflex arc:
The reflex arc describes the pathway in which the nerve impulse is carried and the response is generated and shown by the effector organ is called Reflex arc.