1
Q
what is breathing?
A
rib cage and diaphragm
2
Q
what is inhalation?
A
ribs upward & outward and diaphragm pushes down
3
Q
what is exhalation?
A
ribs inward & downward and diaphragm pushes up
4
Q
what is the medulla?
A
breathing center
5
Q
what is the medulla sensitive to?
A
[co2]
6
Q
what happens if there is high [co2] for the medulla?
A
nerve impulses from the medulla act on the rib muscles and the diaphragm
7
Q
what does high breathing rate cause?
A
low [co2] (feed back mechanism)
8
Q
what is the feedback mechanism?
A
homeostasis
living env.
flashcards
Decks in class (18)
# Cards
-
human body23
-
mechanism of chemical digestion3
-
nutritional requirements15
-
disorders of the digestive sys.12
-
transport22
-
transport vessels33
-
disorders of the transport sys.16
-
respiratory23
-
breathing8
-
disorders of respiratory system9
-
excretion9
-
urinary sys.10
-
diseases of the urinary sys.3
-
nervous sys.36
-
disorders of the nervous sys.11
-
endocrine sys.43
-
disorders of the endocrine sys.10
-
locomotion17
