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Flashcards in Control of Ventilation Deck (50)
1

Control of Ventilation:

What does the EFFERENT control?

Motor

2

Control of Ventilation:

what does the AFFERENT control?

Sensory

3

Control of Ventilation:

on the diagram (for visual prupose only) mark the efferent and afferent side

 

4

Control of Ventilation:

what part of the brain is responsible for ventialtion

brainstem

(pons and medulla)

5

Control of Ventilation:

what type of muscle is teh diaphram?

Skeletal

6

Control of Ventilation:

what is the Major Muscle of inspiration?

Diaphram

7

Control of Ventilation:

the diaphram controlls what % of TV

75%

8

Control of Ventilation:

the diaphram is made up of what type of receptors

Nicotinic ACh

9

Control of Ventilation:

what cervical nerves are responsible for the Phrenic nerve?

C3,4,5

10

Control of Ventilation:

which Ohrenic nerve carries the majority of the Phrenic nerve

C4

11

Control of Ventilation:

what are the 3 main Motor (effernt) nerves of ventilation?

Phrenic n.

External intercostal n.

Internal intercostal n.

12

Control of Ventilation:

what type of Nerves are the 3 major motor (efferent) nerves of ventilation?

A-alpha motor neurons

13

Control of Ventilation:

Picture of the 3 main motor (efferent) nerves of ventilation

 

14

Control of Ventilation:

what are the 3 motor (efferent) muscles that the Phrenic, external intercostal, and internal intercostal nerves innervate?

external intercostal

internal intercostal

diaphram

15

Control of Ventilation:

What Efferent (motor) nerve innervates the Diaphram?

Phrenic n.

16

Control of Ventilation:

what efferent (motor) nerve innervates the External intercostal muscle?

External Intercostal n. 

17

Control of Ventilation:

what Efferent (motor) n. innervates the internal Intercostal muscle

internal intercostal n.

18

Control of Ventilation:

Does the External intercostal muscle control Inspiration or expiration?

inspiration

19

Control of Ventilation:

does the diaphram control inspiration or expiration

inspiration

20

Control of Ventilation:

dose the Internal intercostal muscle control inspiration or expiration?

both (but more expiration)

21

Control of Ventilation:

what controls expiration?

mainly passive

but internal intercostals help

22

Control of Ventilation:

what are the 2 Afferent (sensory) nerves of respiratorion?

Glossopharyngeal n. (hering's n., Sinus n.)

Vagus n.

23

Control of Ventilation:

what does the afferent (sensory) Glossopharyngeal n. (IX) origonate? and end?

 

peripheral chemoreceptors of carotid

end at DRG

 

24

Control of Ventilation:

where does the Afferent (sensory) vagus nerve origonate? and end

the Alveolus 

peripheral chemore ceptors in aortic arch

ends w/ DRG

25

Control of Ventilation:

what do peripheral chemoreceptors detect?

CO2

O2

H+

26

Control of Ventilation:

where are the peripheral chemoreceptors located

Carotid body and aoric arch

(both innervated via Vagus (X) )

27

Control of Ventilation:

what are the 4 centers that control ventilation

  • PnC- Pneumotaxic Center (now called the PRG- Pontine respiratory group)
  • ApC- Apneustic center (secondary resp center in pons)
  • DRG- Dorsal respiratory group
  • VRG- Ventral respiratory group

 

We don;t really give a shit about the ApC

28

Control of Ventilation:

what 2 centers are locataed in the Pons

PnC (PRG)

ApC

29

Control of Ventilation:

What 2 centers are in the medulla?

DRG

VRG

30

Control of Ventilation:

picture of the resp centers

 

31

Control of Ventilation:

what s the role of the PnC or PRG

fine tunes rate and depth of inspiration

32

Control of Ventilation:

what is tha Main Power house of the respiratory center

DRG

33

Control of Ventilation:

is the DRG for inspiratory or expiratory?

inspiratory

34

Control of Ventilation:

since the DRG controls Inspiration what 2 nerves arise from it? and what 2 muscles does the DRG control?

Phrenic n. - controls diaphram

External Intercostal n. - controls external interostal muscle

35

Control of Ventilation:

what center is considered the inspiratory pacemaker?

DRG

36

Control of Ventilation:

picture look at DRG 

 

37

Control of Ventilation:

what nerve arises from the VRG? what muscle does it control?

Internal intercostal n.

internal intercostal muscle

38

Control of Ventilation:

look at diagram of VRG

 

39

Control of Ventilation:

where is the control center for respiration

medulla and pons

Brainstem

40

Control of Ventilation:

whata re the major muscles for forced expiratory

Abdominal muscls

41

Control of Ventilation: Stretch receptors 

Smooth muscle of the bronchi and bronchioles has receptors the fire when stretched, (controled via Vagus n.) which reflexly tend to do what to respirations

inhibit

42

Control of Ventilation: Stretch receptors 

when the stretch receptors fire and inhibit inspiration what reflex is that

haring breuer reflex

43

Control of Ventilation: Stretch receptors 

in the haring Breuer reflex what nerve carries the afferent (sensory) signal

Vagus (X)

44

Control of Ventilation: peripheral chemoreceptors

what do they detect 

CO2

O2

pH (H+)

45

Control of Ventilation: peripheral chemoreceptors

where are they found

Mostly in carotid body but also in aoric arch

46

Control of Ventilation: peripheral chemoreceptors

they are MOST responsive to what?

decreases in PaO2 (

47

Control of Ventilation: peripheral chemoreceptors

what nerve carries afferent (sensory) information from the Carotid bodies?

Glossopharyngeal (IX)

48

Control of Ventilation: peripheral chemoreceptors

what nerve carries Afferent (sensory) information from the aortic arch

Vagus (X)

49

Control of Ventilation: Central chemoreceptors

they respond to what?

H+ions

50

when the partial pressure of CO2 in thr CSF increases the H+ and HCO3- ions increase immediately- what priciple or law is this?

 

LaChateliers principle

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