need homework help! biology questions!?

[sophiebostwick4092]

1) describe the movement of gases in the lungs. In which part of the lungs does gas exchange take place?2) describe the movement of an impulse through a neuron and across a synapse3) describe the movement of an impulse through a neuron and across a synapseplease give real answers answer as many as you canthanks for the help!

[Sam6561]

You are asking for LONG answers. The only one that I can type quickly is: gas exchange takes place in the alveoli. Now here's a tip: read your biology book.

[Avery]

haha your still in school? im not. unfortunately, i cant answer your question... sorry.

[nayy8381]

1. pharynx- back of mouth/ throat; trachea- windpipe; bronchi- lead to lunng; bronchiole tubes- brnaching bronchi; alveoli- tiny air sacs, 150 mil. per lung, surrounded by capillaries & where gas exchange takes place