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Respiratory and Excretory systems

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Respiratory and Excretory systems

Postby neochewey » Thu Jan 13, 2005 3:28 am

i need help with my homework plz.

1. Explain the main function of the respiratory system.

2. You breathe ________ in and breathe out _________.

3. Your kidneys are protected by ______________ and fat.

4. Urine exits the body through the ________________.

5. Blood enters the excretory system through a/an ______________.
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Postby Poison » Thu Jan 13, 2005 4:40 pm

I think this can help you: (hope all are true :) )

1) to bring oxygen in to the body and carry carbon dioxide out of the body.
2) oxygen, carbon dioxide
3) probably the answer is WATER but I'm not sure
4) Urethra
(if all the way it passed is asked it is: kidney---> ureters--->Urinary bladder---> urethra )
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the homework help

Postby anna_10feb » Thu Jan 20, 2005 11:32 am ur kidneys are protected by fat and the bowman capsule..and blood enters ur excretory system through the an artery..u breath in oxygen and breathe out carbon dioxide..good luck!
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Postby MrMistery » Sat Mar 05, 2005 10:42 pm

That is not entirely true anna_10feb: each kidney consists of 1 milion nephrons. Each nephron has a part called the glomerule which is protected by the Bowman capsule. I guess the answer to that is connective tissue. The kidney, like most other organs in our body is protected by a soft connective tissue. I am not sure, but that is my best guess
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