Learn about human lungs, respiration system, breathing in oxygen and breathing ... hold our bodies up and protect our organs. Bitesize 1st Level Science guide for Scotland's Curriculum for ...

The metabolic activity of any tissue is limited by its blood supply; the more active any organ, the more blood it needs and the more extensive its vascularization. The changes in metabolic activity ...

An examination of the roles of organ systems in maintaining life and health in mammals, including humans, with emphasis on the alignment between structure and function. Topics include the functions of ...

Both usually produce few young at one time, and ensure their survival by caring for them. Unlike mammals, birds lay eggs and initial stages of development occur outside the mother’s body. Reproductive ...

Your data can be used to monitor for and prevent unusual and possibly fraudulent activity (for example, regarding advertising, ad clicks by bots), and ensure systems and processes work properly ...

The human body is made up of cells, which make up tissues, which in turn make up organs that form the basis of systems, all working together to keep us alive. Learn how body systems and their vital ...

Doctors' union the British Medical Association (BMA) and politicians alike have called for an opt-out system to be adopted in England, where people's consent to donate their organs after their ...