Which of the following portion of breathing centre in medulla oblongata inhibits inspiration and stimulate the expiration?
a) ventral
b) dorsal
c) lateral
d) both b and c
Explanation: it is known as expiratory centre
What will happen to breathing rate of 20 % of the oxygen decreases in air?
a) breathing rate decreases
b) breathing increases little
c) breathing rate becomes double
d) not affected
Explanation: respiratory rate rises when oxygen levels don't meet your body's needs or carbon dioxide levels get too hi
The breathing centre communicates with the intercostals muscles by which nerve?
a) sciatic nerve
b) phrenic nerve
c) intercostal nerve
d) optic nerve
The breathing centre communicates with the diaphragm by which of the following nerve?
a) sciatic nerve
b) phrenic nerve
c) intercostal nerve
d) optic nerve
Breathing consists of how many phases?
a) two
b) three
c) four
d)five
Explanation: inspiration and expiration
In human
inspiration is ……..process.
a) active
b) passive
c) both
d) none
Explanation: inspiration is also known as inhalation and requires energy
