The human body comprises about 650 different muscles, and all are under the control of the nervous system. The nervous system comprises billions of neurons, which are in spontaneous contact with each other for the aim of regulating and monitoring the sensory and internal activities.
The actions like leaning over to pick a pen incorporate the coordinated attempt of various groups of muscles. The conscious mind transfers this signal to the central nervous system that further translates it into electrical impulses.
These are then further transferred to the somatic component of the peripheral nervous system to the nerves accountable for monitoring the required muscles. With the arrival of a message, a chemical known as acetylcholine gets discharged from the nerve endings, instigating the muscle fibers membrane and making them a contract.
The answer is is third option
<span>In order to react to the stimulus and catalyze the reaction necessary for the desired outcome, enzyme require a process in which they bind with the substrates in the given experiment, which will then allow the enzymes to undergo the process they are attempting to implement.</span>
The gastrovascular cavity differs from the alimentary canal in that only the gastrovascular cavity has only a single opening. Gatrovascular cavity is the actual organ of digestion and circulation in the animal phyla Cnidaria and the Platyhelminthes. Alimentary canal unlike the gastrovascular cavity has two openings, the mouth on one end and the anus on the other end. Food goes in the mouth, while waste comes out the anus.
