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► Med Misc 44 > Control of Ventilation > Flashcards

Control of Ventilation Flashcards

1
Q

Control of Ventilation:

What does the EFFERENT control?

A

Motor

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2
Q

Control of Ventilation:

what does the AFFERENT control?

A

Sensory

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3
Q

Control of Ventilation:

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

A
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4
Q

Control of Ventilation:

what part of the brain is responsible for ventialtion

A

brainstem

(pons and medulla)

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5
Q

Control of Ventilation:

what type of muscle is teh diaphram?

A

Skeletal

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6
Q

Control of Ventilation:

what is the Major Muscle of inspiration?

A

Diaphram

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7
Q

Control of Ventilation:

the diaphram controlls what % of TV

A

75%

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8
Q

Control of Ventilation:

the diaphram is made up of what type of receptors

A

Nicotinic ACh

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9
Q

Control of Ventilation:

what cervical nerves are responsible for the Phrenic nerve?

A

C3,4,5

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10
Q

Control of Ventilation:

which Ohrenic nerve carries the majority of the Phrenic nerve

A

C4

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11
Q

Control of Ventilation:

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

A

Phrenic n.

External intercostal n.

Internal intercostal n.

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12
Q

Control of Ventilation:

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

A

A-alpha motor neurons

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13
Q

Control of Ventilation:

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

A
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14
Q

Control of Ventilation:

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

A

external intercostal

internal intercostal

diaphram

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15
Q

Control of Ventilation:

What Efferent (motor) nerve innervates the Diaphram?

A

Phrenic n.

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16
Q

Control of Ventilation:

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

A

External Intercostal n.

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17
Q

Control of Ventilation:

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

A

internal intercostal n.

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18
Q

Control of Ventilation:

Does the External intercostal muscle control Inspiration or expiration?

A

inspiration

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19
Q

Control of Ventilation:

does the diaphram control inspiration or expiration

A

inspiration

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20
Q

Control of Ventilation:

dose the Internal intercostal muscle control inspiration or expiration?

A

both (but more expiration)

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21
Q

Control of Ventilation:

what controls expiration?

A

mainly passive

but internal intercostals help

22
Q

Control of Ventilation:

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

A

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

Vagus n.

23
Q

Control of Ventilation:

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

A

peripheral chemoreceptors of carotid

end at DRG

24
Q

Control of Ventilation:

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

A

the Alveolus

peripheral chemore ceptors in aortic arch

ends w/ DRG

25
Q

Control of Ventilation:

what do peripheral chemoreceptors detect?

A

CO2

O2

H+

26
Q

Control of Ventilation:

where are the peripheral chemoreceptors located

A

Carotid body and aoric arch

(both innervated via Vagus (X) )

27
Q

Control of Ventilation:

what are the 4 centers that control ventilation

A
  • 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
Q

Control of Ventilation:

what 2 centers are locataed in the Pons

A

PnC (PRG)

ApC

29
Q

Control of Ventilation:

What 2 centers are in the medulla?

A

DRG

VRG

30
Q

Control of Ventilation:

picture of the resp centers

A
31
Q

Control of Ventilation:

what s the role of the PnC or PRG

A

fine tunes rate and depth of inspiration

32
Q

Control of Ventilation:

what is tha Main Power house of the respiratory center

A

DRG

33
Q

Control of Ventilation:

is the DRG for inspiratory or expiratory?

A

inspiratory

34
Q

Control of Ventilation:

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

A

Phrenic n. - controls diaphram

External Intercostal n. - controls external interostal muscle

35
Q

Control of Ventilation:

what center is considered the inspiratory pacemaker?

A

DRG

36
Q

Control of Ventilation:

picture look at DRG

A
37
Q

Control of Ventilation:

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

A

Internal intercostal n.

internal intercostal muscle

38
Q

Control of Ventilation:

look at diagram of VRG

A
39
Q

Control of Ventilation:

where is the control center for respiration

A

medulla and pons

Brainstem

40
Q

Control of Ventilation:

whata re the major muscles for forced expiratory

A

Abdominal muscls

41
Q

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

A

inhibit

42
Q

Control of Ventilation: Stretch receptors

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

A

haring breuer reflex

43
Q

Control of Ventilation: Stretch receptors

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

A

Vagus (X)

44
Q

Control of Ventilation: peripheral chemoreceptors

what do they detect

A

CO2

O2

pH (H+)

45
Q

Control of Ventilation: peripheral chemoreceptors

where are they found

A

Mostly in carotid body but also in aoric arch

46
Q

Control of Ventilation: peripheral chemoreceptors

they are MOST responsive to what?

A

decreases in PaO2 (

47
Q

Control of Ventilation: peripheral chemoreceptors

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

A

Glossopharyngeal (IX)

48
Q

Control of Ventilation: peripheral chemoreceptors

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

A

Vagus (X)

49
Q

Control of Ventilation: Central chemoreceptors

they respond to what?

A

H+ions

50
Q

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

A

LaChateliers principle

► Med Misc 44 (72 decks)

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