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cavity

A body cavity is any space or compartment, or potential space, in an animal body. Cavities accommodate organs and other structures; cavities as potential spaces contain fluid.
The two largest human body cavities are the ventral body cavity, and the dorsal body cavity. In the dorsal body cavity the brain and spinal cord are located.
The membranes that surround the central nervous system organs (the brain and the spinal cord, in the cranial and spinal cavities) are the three meninges. The differently lined spaces contain different types of fluid. In the meninges for example the fluid is cerebrospinal fluid; in the abdominal cavity the fluid contained in the peritoneum is a serous fluid.
In amniotes and some invertebrates the peritoneum lines their largest body cavity called the coelom.

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Recent contents Top users
  1. A

    Cavity wall or ceiling cistern?

    I'm planning a wetroom in a very small space 1m x 2m (see attached). I want to maximise the space by having a cistern entirely in the stud wall including the waste . Two questions really 1. Is there a cavity wall cistern that fits completely inside a100mm cavity? 2. Is there such a thing as a...
  2. C

    Gas tap in cavity wall. What can I do ie do I fill around it

    Gas tap in cavity wall Advise needed
    • Cmcgui
    • Thread
    • america around cavity gas tap usa wall
    • Replies: 6
    • Forum: USA
  3. D

    Dripping in Wall cavity after boiler service

    Hi, I'm after some advice if possible please! We had our Combi boiler (in kitchen) serviced for it's 3rd year last week & since then we've noticed a fast dripping sound in our sitting room wall cavity when the heating is on! It slows to 1 drip per 40 secs once heating turns off! Our house was...
  4. SteveRobert5a

    Drying out after a long slow leak

    Had a slow leak in a first floor bathroom toilet cistern, and it's probably been going for weeks. This is an ensuite that doesn't get used much, and the water was dripping from the service valve and running down the pipe into the cavity, close to an exterior wall. Parts of the chipboard floor...
  5. D

    Hole in back of gas meter box - can it be sealed safely?

    If a gas meter box is recessed into the wall, with the electrical earthing/bonding wire going through a hole in the back into the cavity... can that hole be sealed safely? My gas supply company said it's unsafe and no holes into the cavity are allowed (aside the actual supply pipe which is...
  6. C

    Plasterboarding over fireplace with cavity flue - airbrick required?

    Hi, I have just bought my first house and I want to get rid of the existing fireplace and put my TV there instead. The fire vented through a cavity flue to the roof which has like a ^ sitting over the top. Am I OK to plasterboard this up or do I need an air brick somewhere, and if so, where...
  7. T

    Gas pipe in Cavity

    So wanting to do some building work at home and wondered if it was acceptable to build the gas pipe into the cavity of a wall. This is the pipe in question. Thanks for any help you can give
  8. B

    Water leak through outside cavity wall.

    Hi, hope I am in the right place. This leak is on our entry wall comes through the mortar when the toilet flushes, bathroom sink taps running and the kitchen taps downstairs. There is no leak inside house. Any ideas please would be appreciated. Thanks Bonny
  9. K

    Cavity wall and wall hung unit...is it possible?

    Hi all, I am having my bathroom done in a few months time but I've been told I can't have the wall hung unit I want because it needs to go on a cavity wall. This has come from the bathroom fitter himself, but I've spoken to other people who say there are ways around everything and it can be...
  10. Y

    15mm piping through internal cavity wall

    Hi - can someone offer some advice on how best to route two 15mm (hot/cold) domestic water pipes through an internal cavity wall. There's a cavity wall dividing two areas of my kitchen and I'd like to route the cold/hot water pipes through it. No problem drilling the holes and passing the pipes...
  11. R

    Cavity Wall Smell Source

    Hi all, Can you identify the plumbing objects in the picture below? Which one might be giving off a sewage like smell in to the wall cavity? The extractor fan in our upstairs ensuite was giving off a horrible smell so I took it off the wall, put my iphone through the hole and took a photo of...
  12. M

    Making Good Wall After Pipe Insulation

    Hi Guys, Just wondering how you would make good a wall after insulating pipes that go through. My boiler is located in small utility room on the back of the house and the pipes feed through a cavity wall. I have just put new climaflex insulation on the pipe runs as the old stuff was in a pretty...
  13. B

    btu/heatloss calculations

    been asked to quote for a full fit on a new build its a cement outer skin on ply with rockwool in the middle does this get treated as a normal filled cavity?
  14. S

    Cavity Wall Insulation and ASHP

    Does anyone know how I estimate how the installation of cavity wall insulation will improve the maximum temperatures I can achieve internally with all else being equal; ie If I run my heat pump at full capacity and achieve a maximum average internal temperature of say 19 degrees before cavity...
  15. C

    22mm hole and 32mm/40mm waste pipe installation

    I’m installing a small basin in my down stairs toilet. The walls are tiles and I am having a mixer tap on the basin. I’ll be using 15mm pipe and I’m aware that I’d need to sleeve these as they will be going through cavity wall and then lagged and boxed in outside to protect against frost...
    • churcheto
    • Thread
    • 22mm cavity denso drill installation pipe sleeve through waste waste pipe
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  16. S

    plastic coted pipe

    just a quick question, a gas pipe has to be sleeved through a wall, we all know that, my question is can you put plastic coted pipe through a wall as a sleeve insted of a bit of waste pipe with a bit of pipe in it?
  17. D

    gas fire

    i did a job last week involving disconnecting a gas fire,the reason the customer requested this was because they applied for free wall insulation.they were refused because the employees of the wall insulation company said the gaS fire is dangerous because the flue is not pulling,i asked how he...
  18. B

    Lowering plastic bath waste pipe through cavity wall into cast iron gutter downpipe

    Hi hope you guys can help...... I'm fitting a new bathroom suite and shower, but i have concrete floors. My old shower tray was sitting on an 8 inch deep timber frame, so as to get the height required for the shower water to run downhill ,along under the bath, then into the bath waste...
    • broontroot
    • Thread
    • bath bath waste cast iron cavity downpipe iron pipe plastic through wall waste waste pipe
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  19. S

    radflex and heatkeeper do they work?

    Hi everyone had some great advice from you guys in the past, i have recently been reading reviews on reflector foils behind radiators and that radflex and heatkeeper seem to be the highest rated. Are they actually any good ?
  20. W

    Central heating pipes in cavity wall

    Hello, Are there any regs relating to installing new heating pipes in a cavity wall? It's an external wall and was retro-insulated about five years ago. I can see the obvious disadvantages to this, just wondered if there were any concrete rules? Thanks,
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