The bladder, depending on the amount of water in your body. The kidneys filter urea and other waste products out of the blood and send them down the ureter to the bladder in the form of urine. Kidneys dont have the greatest concentration as the urea moves continuously through the loop of henle and into the bladder where it is collected.
it is the larynx.
the structure needed by humans to stand and move is the bone and the muscles
That depends on which micro organisms. Some need a very small concentration to be dangerous to human, others need a large concentration. Still others are not harmful to humans in any concentration.
Urination
Animal cell structure differs from that of humans because humans have several billion cells and animals sometimes only have one. However, the basic structure of each cell is similar.
The first one that comes to mind is hydrochloric acid, which is essential to digestion.
The group that contains monkeys, apes, and humans is called primates.
It would depend upon which steroids you used, and in what concentration. Steroids are used in humans to enhance muscle growth, but it would not have the same effect on a worm's muscles, which are quite different in structure.
Cloaca
humans
humans
Yes, lions and humans have a similar respiratory structure.