Biology- Homeostasis and Co-ordination Flashcards
Examples of stimulus
ight from ball, heat, sound
Examples of Receptor
eyes
Example of Co-ordinating centre
brain
Example of Effector
muscles
Example of Response
catch the ball
Which feature of the cell allows oxygen to pass through quickly?
It is thin,
Oxygen passes through the cell by…
diffusion
Diffusion:
The movement of a gas or liquid from an area of high to low concentration.
Osmosis:
The diffusion of water from an area of high water concentration to an area of low water concentration through a partially permeable membrane.
Active Transport:
The movement of gas or liquid from an area of low concentration to high concentration with an input of energy.
Brain and spinal cord=
central nervous system (CNS)
process…
sensory neurone- synapse- relay neurone- CNS- relay neurone- motor neurone
Homeostasis:
maintaining a constant internal environment. Organisms must be able to respond to their environment.
Brain….
senses water content and blood temperature
Pancreas-
senses blood glucose level