Skip main navigation

Water – why do we need it?

We need enough water in our body for physiological function and health. We cannot live for more than about 100 hours (about 4 days) without water. Have a look at …

What gases are regulated? How?

The body is constantly working to regulate the amount of oxygen (O2) and carbon dioxide (CO2) in the blood stream. It is vital that the body responds to any changes …

How does the body take in and expel water?

Homeostasis requires that water intake and output are balanced. But how do we take in and expel water? Water intake We meet our daily requirement for water by drinking, eating …

Thermoregulation mechanisms and the skin

The human body uses three mechanisms in thermoregulation (hot and cold): Efferent responses Efferent responses are the behaviours that humans can engage in to regulate their own body temperature. Examples …

What is a feedback system?

Body systems are regulated by feedback. A feedback system involves a stimulus from one part of the body creating a response from another part that acts to alter the original …

How does the body respond?

So how does our body respond in a homeostatic way to external or internal influences? Every day, the right responses to stimuli must be made and coordinated. The body must …

What is homeostasis?

Homeostasis is the physiological constancy of the body despite external fluctuations. In other words, homeostasis keeps the inside of our body functioning steadily, no matter what is happening on the …

Type 1 diabetes

Type 1 diabetes (also called insulin dependent diabetes mellitus) is the least common form of diabetes mellitus (about 10% of cases) and the most severe. About 1 in 1000 children …

Type 2 and gestational diabetes

Type 2 is the most common form of diabetes, accounting for 90% of all cases. In type 2 diabetes, the pancreas produces insulin, but not enough to meet the body’s …

Why is glucose regulation important?

Maintaining a certain level of glucose is a matter of life and death. Some tissues can use a range of energy sources such as fats and amino acids, but several …