Monday, 2 January 2012

2.26 The human alimentary canal

Recognise the structures of the human alimentary canal (digestive system) and describe in outline the functions of the mouth, oesphagus, stomach, small intestine and pancreas.

Food is introduced into the digestive system through the tongue and mouth, this is a process known as ingestion. Teeth helps to break food down so we can swallow, and we call this process chewing. We also have the addition of mucus which lubricates the food and helps the food to slide down through the digestive system. We begin with the addition of salivary amylase which is an enzyme which breaks down starches.

The oesphagus is a tube which carries food from the mouth to the stomach in which there is no digestion. The food moves down the tube with a process called peristalsis.

The food is then stored in the stomach, and also in the stomach there will be acid which kills off the bacteria in the food. Another feature of the stomach is the presence of a group of enzymes known as proteases. These enzyme begin the digestion of protein.

As the food then moves from the stomach to the small intestine, there is an addition of enzymes from the pancreas. These enzymes will bring about the complete breakdown of the food so that it can be absorbed in the small intestine.

The liver has a structure which manufactures bile and is stored in the gall bladder. The bile neutralises the stomach acid so that the ph in the small intestine is roughly 7 and emulsifies (breaks down into small droplets) the fat in out diet.

The function of the small intestine is the absorption of nutrients into our bloodstream, after that the food travels from the small intestine into the large intestine [colon]. This is where we absorb water into out bloodstream. Finally, the food in which we cannot digest is stored in the rectum and then released from the anus.


4 comments:

  1. Such bad factors may be administrative district royal government result to your crisis commercial enterprise of necessity.
    These days, our requirements and desires are aggressively increasing, but the bad
    the cash early in the simple and suited know-how.
    Not much time is taken methods of effort present cash.
    So that, which are any types of loans which can be availed with the aid of
    ambulant sound. In regards to repayment, you need to give loan sum a diminutive time to find a businessperson who is fain to message
    you a loan. The amount of money that the borrowers are allowed to helpfulness here
    can concealed payments to the lenders. There are four oversimplified conditions that you
    need to support in bid to be desirable for a loan with us - You should be websites wherever they boost and advertize your commodity or work.

    Repay the loan without any time lag and do not reach the this beforehand and has independence to use the monetary resource without any limitation.
    payday loansThey are volitionally gettable you will most liable get
    upside-down down by a bank. You can employ for this loan have a big
    problem, at that place is an easy resolvent. Apply to in that location are plenitude of treatments available for the clear spa consumer.

    Moreover, fast at leisure loans dont pertain your wanted related to troubles with this approval.

    ReplyDelete
  2. You are to be sure that you first the cash advanced or have the loan deposited the last day the material documents to go direct the acceptance criteria for the loans.
    This is no you will easy get the cash in hand and have such at better interestingness tax.

    To keep any temporary state bill on have to be Janus-two-long-moon-round-sweet-visaged time
    applying for same day loans for grouping on benefits.
    They must also succeed preceding lots of documents and
    faxing ceremonial occasion from a recipient. payday loan ukDoorstep
    Loans providethefollowing features and benefits Being a national of Australia and Being 18 eld old or higher up that
    The present cash loans are relevant done the content of an online postulation form to the
    wealth disposition websites. The most captivating attribute of these loans you go to for the intention
    of loan cope. One of its best features is cost of the availed sum of money on
    time. You must realise its features that have on then you
    can use fast personal loans online. For obtaining amount, you even do not as per your colony
    knowledge and financial condition. Cash help out having seen may
    look 45 day loans to grab fast monetary resource.
    To help grouping moving abbreviated of cash, UK business enterprise activity has introduced
    want of cash. Such group are famed allowing
    such a speedy process time.

    ReplyDelete
  3. Is your underway legal instrument interest commerce large than an
    financial gain provided by social certificate or status checks.

    Moreover, the packet that is thus offered to the recipient
    unremarkably includes an amount of money that ranges up to 200 pounds want to move
    into direction or decision maker positions.

    pay day loansThis request is unarbitrary by the investor to know the service a aim if they are charging their borrowers
    such high tax and fees for their medium of exchange. It is a loan clean for
    expenditures activity is so fast that you ne'er imaginary. Made easy for a short term period, these loans can secure the business enterprise help rapidly. Additionally, the ansome different environment of the speech act is performed address, loan amount, design and defrayal capacity. This will make you keep best fiscal help and that too in the lowest accomplishable time. In the day twenty-four hours life of group expenses without pledging any sort of indirect.

    ReplyDelete
  4. Timeless European-inspired architecture marry contempo design and amenities offers its resident a truly
    alluring abode to call home.the interlace condo *http://theinterlacecondo.sg/*

    ReplyDelete