So where do we come from....??? How do we get to be who we are ???
When you have some time check out this BBC documentary which will absolutely amaze you and is the basis of our understanding on what makes you the way you are...the life before birth is incredible...well worth a watch !!!
The Human Body systems.....lets take a look at these...
The Human Digestive system:
Digestion is the breaking down of food into molecules /nutrients that can be absorbed in to the bloodstream and used as a source of ENERGY for the body !
Digestion is the breaking down of food into molecules /nutrients that can be absorbed in to the bloodstream and used as a source of ENERGY for the body !
Villi - are finger like projections that line the small intestine and are responsible for the absorbing of nutrients (digested food particles) They provide a much LARGER surface area for absorbing the nutrients into the blood !
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ENZYMES and Digestion...
Digestive enzymes are secreted by the salivary glands, stomach, pancreas, and the small intestine.
Enzymes help in the digestive system by breaking down larger food molecules into simpler forms.
For example - Amylase in our mouth helps to break down large carbohydrate molecules in to smaller molecules so they can be absorbed more easily into the blood stream.
Protease in our stomach break down Proteins into amino acids and Lipase breaks up the large fat molecules into smaller molecules so they too can enter our bloodstream and be used by the body as a source of energy.
Digestive enzymes are secreted by the salivary glands, stomach, pancreas, and the small intestine.
Enzymes help in the digestive system by breaking down larger food molecules into simpler forms.
For example - Amylase in our mouth helps to break down large carbohydrate molecules in to smaller molecules so they can be absorbed more easily into the blood stream.
Protease in our stomach break down Proteins into amino acids and Lipase breaks up the large fat molecules into smaller molecules so they too can enter our bloodstream and be used by the body as a source of energy.
THE MOUTH.....
Digestion.....Starts in the mouth - with the teeth and Saliva.
Ingestion is the termed used for taking food into the mouth.
Involves the
Digestion.....Starts in the mouth - with the teeth and Saliva.
Ingestion is the termed used for taking food into the mouth.
Involves the
- Teeth – is an example of physical/mechanical digestion – teeth and chewing break up food into smaller particles increasing the SURFACE AREA available for the ENZYMES to act on.
- Saliva – produced by the salivary glands – it moistens the food-it also contains AMYLASE which breaks down carbohydrates/starch and MUCIN which is the slimy substance htat coats the bolus.
- Tongue - helps to roll food up into a ball – bolus so that it is easier to swallow.
Herbivore and carnivores - how do their teeth differ ?....Why is this ?.....
The Small intestine......
why do we have one ?...what is its main role.....?
Why is it sooooo long...?
Our Circulatory System.....
What are the main functions of our Circulatory system?...See below to know more....
What are the main functions of our Circulatory system?...See below to know more....
Our BLOOD VESSELS......
There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.
There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.
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Click here to find out more about Arteries, Veins and Capillaries....
Oxygenated v's Deoxygenated blood......what is the difference???....check this out....
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The HEART ....
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Heart treatments - Stents, pacemakers, heart valve surgery and coronary by pass surgery - heard of these???...Would you like to know more???
Click here to find out more about these......
Click here to find out more about these......
GENETICS:
What is this.....
Genetics is the study of heredity or how certain characteristics/traits pass from parents to their offspring....it helps explain how some genes get passed on to the offspring but not others.
What is this.....
Genetics is the study of heredity or how certain characteristics/traits pass from parents to their offspring....it helps explain how some genes get passed on to the offspring but not others.
JUST FOR FUN...... The top 10 amazing Genetic traits......
Predicting inheritance patterns and what genes get past on through to offspring..??....we use special diagrams called Punnet Squares for this........
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Need to know more......click on the button below for a step by step guide to carry out and complete a punnet square !!