Homeostasis and the kidney

What is homeostasis and what needs to be controlled within the body

Homeostasis is the maintenance of a constant internal environment in contrast to the external environment to protect the cells and keep metabolism rate stable

Factors that need to be controlled-

• body temperature

• pH

• Water potential

• Hormone levels

• Waste products - eg. Nitrogenous waste

What is negative feedback and explain how this is used to maintain homeostasis

It’s a change in the system to reverse a change caused by the environment

It’s starts at a set point and then an input change in system causes the receptor to detect this change and via sensory neurons send a message to the co-ordinatior to give the effector a response - usually a hormone to counteract change.

What examples are there of negative feedback

Glucose

Give the structure of the kidney

What is extraction

What is osmoregulation

What is ultrafiltration

What is selective reabsorption

What is the treatments for kidney failure

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