Among these three parts (of the brain), fore-brain is the main thinking part of the brain; further, fore-brain are specialized for hearing, smell, sight, etc. The brain is categorized into three major parts or regions, namely the fore-brain, mid-brain, and hind-brain. It is an interesting biomolecule in the sense that no other vitamin contains a metal ion. The abuse of many drugs e.g., aspirin, morphine, heroine, cocaine, marijuana, hashish, nicotine, and alcohol can produce serious physiological, behavioral and mental problems in a person. Every organ of an organism does not work continuously except the heart, brain and lungs, which according to their role in the body are required to work 24 hours a day. At the front of the brain are the frontal lobes which regulate fine motor control including movements involved in speech. There are some work which done by brain and there are some work which controlled by brain in a background. Coordination is the way in which all the organs and systems of the body are made to work efficiently in a harmonized manner. Peripheral nervous system consists of cranial nerves, which arise from the brain and spinal nerves. Detailed revision notes on the topic Coordination in Plants. Copyright © 2020 Desktop Class. As for example the sound waves are received by ears. The forebrain is most advanced in human. This (electrical) impulse, which travels from the dendrite tip to the cell body, and then along the axon to its end of the axon, sets off the release of some chemicals. Such diverse reactivity is explained by the effect of ligands composing the coordination environment of metal cations in biology. Those organs which are specifically build to receive particular type of stimuli are called sensory organs or receptors. The outer most layer is tough and fibrous and provide mechanical support. This cell is highly adapted for communication because of its wire like projection; the dendrites which are often further branched and carry impulses towards the central cell body. It may also control moods and feelings. Summary. Most of the spinal cord consists of ascending track conducting sensory impulse towards the brain and descending track carrying impulses down ward to motor neurons within the spinal cord. coordination means performing each work with some back control systems. The cell body is a thicker region of the neuron containing the nucleus and most of the cytoplasm. IGCSE Business Study Notes. These cookies do not store any personal information. Prepared for the exam using these notes and past papers. Animals co-ordination is produced by the two systems. Spinal cord is a thick dorsal neural track extending from the brainstem to the lower back. Pituitary, thyroid, parathyroid, pancreas (islets of Langerhans), adrenal, testis (in male) and ovary (in female) are endocrine glands present in human body. The stimuli are changes in the environment both external and internal. Bioinorganic Systems Coordination compounds play important roles in nature. Neurons (nerve cells): The structural and functional unit of the nervous system in all animals including man is the neuron. Lack of water causes water to be drawn out via osmosis causing metabolic reactions to stop, whereas too much water will cause the cell to burst. The change in the environment already mentioned is perceived/felt by special organs of the body, which are specialized to receive efficiently a particular type of stimulus. its various functions are coordinated. Necessary cookies are absolutely essential for the website to function properly. Their coordination can ensure the profitable existence of the organisms. Coordination Compounds in Biology Vitamin B 12 is an important coordination compound in biol-ogy. Revise coordination and control – the nervous system for GCSE Biology, AQA. ADVERTISEMENTS: Response and Coordination in Plant and Animals! Without coordination the body becomes disorderly and it may fail to function properly. Coordination > > Inheritance Ecosystem > Coordination. Chemical coordination is centered in a system of glands known as endocrine glands. The general nervous pathway We have various sense organs in our body. It processes the visual and auditory information from the eyes and ears before sending them to the forebrain. Biology Notes for IGCSE 2014. Auxins, gibberellins, cytokinins and are responsible for harmonious growth of plants. All these attributes of physiology can be achieved when the body works as one unit, in which its different organs and systems cooperate and work in harmony with each other, i.e. In both types of co-ordinations, the change (stimulus), whether external or internal is perceived by special organs which are called sensory organs. “The human brain is like a super performing a variety of activities. Sensory neurons: they carry nerve impulses (message from receptors to central nervous system. The messages of the type of response are passed via motor neurons or nerves to the particular effectors which produce a specific response. Like that in human brain is main part which perform all part and coordination in the human body. Then we will learn how & why living beings reproduce (unit 2). The cerebrospinal fluid (CSF) lies between the inner and middle layers, which, provides cushioning and ions to the brain and spinal cord. It also brings harmony in carrying out the different tasks and activities to achieve the organization’s objectives efficiently. The vertebrate brain is chiefly concerned with involuntary, mechanical process. Total Pageviews. “Examine a photograph/slide of a neuron and compare its structure with Fig 15.1”. If the nerves that detect heat, cold, or any such kind of more sensational element move muscles in a simpler way; so, the process of detecting the signal or the input and responding to it by an output action, is known as reflex action and such connection is known as a reflex arc (see the image given below). (3) The cerebellum lies behind the medulla and controls balance and muscle coordination. If temperature is too high, the enzymes could become denatured. Through sensory neurons: they carry nerve impulses ( message from receptors to central nervous system humans! 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