regulation of respiration

Question 1

respiratory center is composed of several groups of neurons located bilaterally in

Answer 1

medulla oblongata and pons of the brain stem

Question 2

respiratory center is divided into three major COLLECTIONS of neurons

Answer 2

1) dorsal respiratory group
2) ventral respiratory group
3) pneumotaxic center

Question 3

dorsal respiratory group

Answer 3

located in the dorsal portion of medulla, which mainly causes INSPIRATION

Question 4

ventral respiratory center

Answer 4

located in ventrolateral portion of medulla, which mainly causes EXPIRATION

Question 5

pneumotaxic center

Answer 5

located dorsally in superior portion of pons, mainly controls the RATE AND DEPTH OF BREATHING

Question 6

most of neurons of dorsal respiratory group are located in

Answer 6

nucleus of TRACTUS SOLITARIUS (NTS)

Question 7

additional neurons locate in the adjacent reticular substance of medulla

Answer 7

also play an imp rol in respiratory control

Question 8

NTS is sensory termination of both

Answer 8

VAGUS and GLOSSOPHARYNGEAL NERVES, which transmit sensory signals into respiratory center from

1. peripheral chemoreceptors
2. baroreceptors
3. other receptors of lungs

Question 9

the basic rythms of respiration are generated in

Answer 9

dorsal respiratory group

Question 10

inspiratory signals are ramp signal

Answer 10

it causes the steady increase in volume of lungs uring inspiration rather than inspiratory gasps