-Science-info-

Animals

2005-12-28T22:13:00.000+08:00

Animals can be group in many ways, but the main group is the:

#mammals
#fish
#birds
#insects

For animals,there are many ways of classifying them...for example:

# skin texture
#what they eat
#how they reproduce
............and many more.............

MAMMALS

All mammals give birth to their young alive accept for the platypus and spiny anteater.

If you think that the whale is a fish you are WRONG cause the whale is a mammal to!

FISH

All fishes lay eggs accept for the guppies.
There are many species of fish,some of them are for you to keep as pets.

BIRDS

All birds lay eggs and they live in nests on trees.There are many kinds of birds and not all of them can fly because of the weight of their bones.
We get bird nest drink from the swallows saliva. Magically, it has good use to our health and tastes good.

INSECTS

The same,all insects lays eggs but in different forms.Their cycles are too not the same although some may be identical.
Most insects has six legs, the others belongs to other group that are not specified for example the spider.

The other information will be given on another post!

digestive system

2005-12-26T13:01:00.000+08:00

MOUTH - GULLET - STOMACH - SMALL INTESTINE - LARGE INTESTINE - ANUS

# after chewing the food,the food enters our stomach and the food stays there for about 6 hours before it enters the small intestine. There, the food is churned up by the muscles together with digestive juices.

#In the small intestine, the bits of food are being absorbed in the blood,the digestion ends here.

#Food waste are carried to the large intestine where it carries the waste to your anus and is passed out.

Senses

2005-12-25T12:54:00.000+08:00

All of us have five senses: sight,taste,touch,hearing and smell.

Sight
#The sense of sight belongs to our eye,our eye is like a camera it can picture objects that reflects light to it.
#On our eye,we have a protective coat on top(jelly like substance) called the vitreous humour.Also,we have our iris and pupil.The iris the outer part of the eyeball which controls the size of our pupil.The pupil is the black circle which is like the window to our eye.

Taste
#We use our tongue to taste.We have many different tastes like:sweet,sour,salty and bitter.
#Our tongue DOES NOT have different sections for different tastes,there are only parts that senses are weaker for certain tastes.

Touch
#We touch things using our outer skin,there touch receptors all over the body embedded in the skin.
#Our skin can feel: heat,cold, pain, pressure and light touch

Hearing
#The sense of hearing belongs to our ear,we can hear LOUD and SOFT sounds.
#Our eardrums recieves a vibration from the sounds around us and that is how we hear

Smell
#We use our nose to smell,we have nose hair to prevent dust particles and mucus to stick the germs and from there we blow our noses

Muscles

2005-12-23T13:53:00.000+08:00

Muscles
#Most muscles comes in pairs,one pulls the other pulls back.Typically,there is a 'flexor' to bend or flex a joint,and an extensor to straighten it again.
Fibers
#Muscles are bundles of fibre-just like cells.Some contains more than the others.
Striped strands
#Most skeletal muscles are made of thin strands called 'myofibrils'. Along the myofibrils are dark and light stripes called striations which are actually two alterning substances - actin and myosin.

*our muscles CONTRACT and RELAXES

Boney

2005-12-19T23:41:00.000+08:00

Bones
#Bones are very important to our body,they support our whole body together with the muscles wich will further explained later. An adult has approximately 206 bones in his body.

About our joints
#Moving joints
They allow bones in a skeleton to move, we have the:

ball and socket joint(found in shoulder)
hinges(knee and elbow)
swivelling joint(found in neck)

#Spinal joints

The joints between backbones are called cartilaginous ,they allow little movement

#Knee joints

They are lubricated(oilied) by capsules of oil called synovial fluid, hence they are called synovial joints.

Further into lungs

2005-12-16T14:05:00.000+08:00

Alveoli
Two lungs
#the windpipe leads into 2 lungs, the 2 lungs transfer oxygen from the air into the blood

Airways
#Lungs are like hollow trees with lots of branching airways called bronchioles.

Air Sacs
#at the end of each bronchoile there would be clusters of air sacs or 'alveoli', like buches of grapes.

Air to Blood
#When we breathe in, the oxygen passes through the thin walls of the alveoli and into the the blood vessels.

Blood to air
#the unwanted other gases passes from the blood through the alveoli walls into the lungs and goes out of the body as we breathe out.

Fun Facts

2005-12-15T13:45:00.000+08:00

Breathing
#u take abt 600 million breaths in a lifetime

#if your lungs were opened out flat it would cover the size of a tennis court

Respiration
#What is respiration?
Respiration includes breathing and also the conversion of sugar to the energy in body cells, it is called burning because it creates heat

#What is aerobic respiration?
It is when muscle cells burn sugar with oxygen. The opposite is called anaerobic respiration.

Lungs

2005-12-14T23:59:00.000+08:00

Lungs is an important organ that helps you to breathe. It belongs to the respiratory system. Your diaphragm moves downwards when you breathe out and it happens vice-versa.

#The air branches out into air sacs in our lungs

#Nose-windpipe-lungs-airsacs

#It works in a cycle

For more information:
http://users.tpg.com.au/users/amcgann/body/respiratory.html
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookRESPSYS.html

Heart and Blood

2005-12-14T23:16:00.000+08:00

What is blood?
It is a mixture of cells and platelets in a clear yellowish fluid called plasma.Salts,hormones,fats and sugars are washed along the plasma too.

#Red Blood Cell
It carries oxygen around the body

# White Blood Cells
It fights against any diseases

#Platelets
Helps to plug leaks such as cuts

#Arteries
a type of blood vessal that contains oxygenated blood

#Veins
a type of blood vessal that contains de-oxygenates blood

#Pulse
It tells how fast your heart beats(can be felt at wrist or neck)

manager

2005-12-14T22:52:00.000+08:00

hi...I am Elena.This is not really a blog..more lyk a web site...so what u c here will be helpful in your studies, and hope that primary school frienz will be happy with it....so....yup