Two separate processes are involved in vocalisation: 1. Phonation 2. Atriculation. Process # 1. Phonation: The whole process is dominated and co-ordinated by speech centre in the cerebral cortex, damage to which will lead to permanent aphasia. Phonation is due to vibration of vocal cords which are folds stretched along the lateral wall of the […]
Top 2 Processes Involved in Vocalisation | Larynges | Humans | Biology
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Cyanosis and its Factors | Respiration | Humans | Biology
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In this article we will discuss about the meaning and factors causing cyanosis. Meaning of Cyanosis: Cyanosis is a clinical condition in which the skin and mucous membranes assume a bluish colour. It may be local or general. When general, it is best seen at the lips, nose, cheeks, ears, hands and feet. It is […]
Top 6 Factors that Maintain Circulation in Human Heart | Biology
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In this article we will discuss about the six main factors that maintain circulation in human heart. Factor # 1. Pumping Action of the Heart: This is the main motive force of circulation. Factor # 2. Elastic Recoil of the Arteries: Ventricles contract during systole and relax during diastole. So during systole certain amount of […]
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