alveoli and gas exchange

4:55

21:39

10:01

کوتاه

27:45

4:34

4:52

23:50

7:54

1:33

39:54

3:11

7:22

2:24

4:45

12:52

3:51

3:46

3:36

2:24

2:59

7:49

5:57

4:44

کوتاه

3:45

7:58

4:16

3:58

3:22

3:47

3:02

3:05

3:00

2:48

3:05

1:27

2:11

17:32

4:17