Control of Ventilation: Neural Control Flashcards Preview

Apex 1 - 2 Respiratory II: Physiology (24) > Control of Ventilation: Neural Control > Flashcards

Flashcards in Control of Ventilation: Neural Control Deck (17)
Loading flashcards...
1

What are the determinants of Alveolar ventilation and consequently respiratory rate and pattern?

Neural control

Central Chemical control

Peripheral Chemical control

Baroreceptors

2

Neural control of alveolar ventilation and consequently the respiratory rate and pattern is located in the:

Medulla

(respiratory center)

3

Central chemoreceptors control of alveolar ventilation and consequently of the respiratory rate and pattern are located in the:

Medulla

(central chemoreceptors)

4

Peripheral chemoreceptors control of alveolar ventilation and consequently of the respiratory rate and pattern are located in the:

Carotid bodies

and

Aortic arch

5

Baroreceptors control of alveolar ventilation and consequently of the respiratory rate and pattern are located in the:

Lungs

6

Think of breathing as a reflex arc that contains

sensors,

afferent pathways,

a control center,

efferent pathways,

effector organs

7

The respiratory center receives afferent input from

Central chemoreceptors

Peripheral chemoreceptors

Stretch receptors (in the lungs)

8

The respiratory center integrates the incoming signals with its intrinsic respiratory pattern and sends a coordinated response via efferent pathways terminating in

Diaphragm

Intercostals muscles

Accessory muscles

9

The respiratory center receives afferent input from the central and peripheral chemoreceptors as well as stretch receptors in the lungs. The respiratory center integrates the incoming signals with its intrinsic respiratory pattern and sends a coordinated response via efferent pathways terminating in the diaphragm, intercostals, and accessory muscles. Which structure can modify these responses?

Cerebral cortex

10

The respiratory center receives afferent input from the central and peripheral chemoreceptors as well as stretch receptors in the lungs. The respiratory center integrates the incoming signals with its intrinsic respiratory pattern and sends a coordinated response via efferent pathways terminating in the diaphragm, intercostals, and accessory muscles. The cerebral cortex can modify these responses.

The net result is a mechanism that maintains which two values within a very narrow range?

PaC02 and Pa02

11

Where is the respiratory center located?

Reticular activating system (RAS)

(in the medulla and the pons)

12

What are the 4 key components or centers that work together to regulate the breathing pattern?

Dorsal respiratory

Ventral respiratory

Pneumotaxic

Apneustic

 

13

Which respiratory center causes or is the Pacemaker for inspiration, and is primarily active during inspiration?

Dorsal Respiratory Center (DRC)

14

Which respiratory center has inspiration and expiration functions, but is primarily active during expiration, is quiet during normal breathing, becomes active when Ve demand increases - increases the force of contraction of the diaphragm and abdominal muscles?

Ventral Respiratory Center

15

Which respiratory center inhibits the dorsal respiratory center (DRC) (inhibits the pacemaker) by triggering end of inspiration and responds to strong stimulus by causing rapid and shallow breathing, and responds to weak stimulus by causing slow and deep breathing

Pneumotaxic Center

16

Which respiratory center stimulates the dorsal respiratory center (stimulates the pacemaker) by antagonizing the pneumotaxic center, which causes inspiration, and is inhibited by pulmonary stretch receptors?

Apneustic Center

17

References:

 

 

Nagelhout. Nurse Anesthesia. 6th  ed.. 2018.   p. 579-580.

Stoelting . Pharmacology & Physiology in Anesthetic Practice. 4th ed. 2006. p. 779.