During expiration, the diaphragm moves
upwards
downwards
Doesn't move at all
During expiration, the diaphragm moves upwards and the size of lungs decreases pushing air out.
During inhalation the diaphragm moves(a) upwards(b) downwards(c) towards left(d) towards right
During expiration the diaphragm becomes:
During exhalation, the ribs (i) move outwards (ii) move downwards (iii) move upwards (iv) do not move at all
During inhalation, diaphragm moves ___.