Q.Complete the statement by choosing appropriate match among the following - a. Resting potential; b. Nerve impulse; c. Synaptic cleft; d. Neurotransmitters — i. chemicals involved in the transmission of impulses at synapses; ii. gap between the pre synaptic and post synaptic neurons; iii. electrical potential difference across the resting neural membrane; iv. an electrical wave like response of a neuron to a stimulation.

Imagine two ways of getting a message across an office. You could shout to one specific person by name and get an instant reply, or you could release a scent into the air-conditioning that slowly reaches everyone but takes time to spread. The body coordinates its organs using both styles at once, through the neural system and the endocrine system.

Coordination itself means the many organs adjusting and integrating their separate activities for one common purpose — like the way, during exercise, the muscles, lungs, heart, blood vessels and kidneys all work in a tightly linked way to meet the demand for more oxygen, then settle back together when the effort stops. Two systems share the task of producing this teamwork.

• The neural (nervous) system is the fast, precise route. It provides an organised network of point-to-point connections between sense organs, processing centres and effector organs, and because messages travel along these connections as electrical impulses, coordination is quick and targeted. …