week 2 human physiology

bio chemistry

dynamic equilibrium

homeostasis is a form of this, there’s a variable set point and your body varies on it.

receptor sensor

it monitors the environment and sends a signal to the control Centre.

control Centre

analyses input and determines response

effector

response made from the control centre

element

A substance that cannot be decomposed into

simpler substances by chemical means, and is made up of atoms

molecule

Atoms that are connected by chemical bonds. Every combination of atoms is a molecule (i.e. atmospheric oxygen (O2) is two O joined together)

compounds

composed of two or more separate elements i.e. water (H2O) has Hydrogen and Oxygen

solution

Mixture of two substances not chemically combined

elements that are building blocks of life

hydrogen H, oxygen O, nitrogen N, carbon C.

minerals present in the body

sodium KA, potassium K, calcium Ca, phosphorus P.