martes, 28 de noviembre de 2017

viernes, 24 de noviembre de 2017

lunes, 23 de octubre de 2017

INTERACTION

Neurons:

Resultado de imagen de neurons

Look inside Human Brains:

Resultado de imagen de brain

Feel pain:

Resultado de imagen de feel pain

REFLEX ACTIONS

When a receptor is stimulated, it sends a signal to the central nervous system, where the brain co-ordinates the response. But sometimes a very quick response is needed, one that does not need the involvement of the brain. This is a reflex action.
Reflex actions are rapid and happen without us thinking. For example, you would pull your hand away from a hot flame without thinking about it. The animation below allows you to step through each stage of the reflex arc.
This is what happens:
  1. receptor detects a stimulus - change in the environment
  2. sensory neurone sends signal to relay neurone
  3. motor neurone sends signal to effector
  4. effector produces a response
The way the iris in our eye adjusts the size of the pupil in response to bright or dim light is also a reflex action.
In bright light:
  • Radial muscles of the iris relax.
  • Circular muscles of the iris contract.
  • Less light enters the eye through the contracted pupil.
In dim light:
  • Radial muscles of the iris contract.
  • Circular muscles of the iris relax.
  • More light enters the eye through the dilated pupil.

DIGESTIVE SYSTEM

https://www.neok12.com/video/Digestive-System/zX57757c6c561f6b5b5d7a59.htm

RESPIRATORY SYSTEM


HOW THE BODY WORKS


UNIT 1 - Living Things

The incredible world of cells

To study:            The cell


To practice:
                       THE ANIMAL CELL

                       THE PLANT CELL


THE MIDDLE AGES

Revise all about the Medieval Ages playing these games:



The Middle Ages




WELCOME TO MY BLOG

Dear Students,

WELCOME TO MY BLOG

Here, we will share interesting information to enjoy and learn a lot!!


Your comments and opinions are welcome!!

Your teacher,

Marta.