Anatomy Flashcards

1
Q

2 primary functions of respiratory system

A
  1. Ventilation: mass movement of gas in and out of lungs

2. Gas exchange: transfer of O2 into blood and removal of CO2

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2
Q

Lung clearance systems

A
  1. Mucociliary clearance

2. Cough

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3
Q

Anatomy of respiratory system

A
  1. URT
  2. LRT
  3. Pleural cavity
  4. Thoracic cage
  5. Respiratory muscles
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4
Q

URT has

A
  1. Nasal cavity
  2. Pharynx
  3. Larynx
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5
Q

LRT has

A
  1. Conducting part

2. Gaseous exchange part

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6
Q

Function of conducting part of LRT

A
  1. Conducts air into gaseous exchange parts of lungs

2. Traps particles 1-5um via sedimentation via MCC

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7
Q

Airway lining of LRT

A
  1. Central airways - mucus layer, ciliated epithelium, goblet cells, submucosal glands
  2. Peripheral airways - less cilia, Clara cells
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8
Q

Function of gaseous exchange part of LRT

A

Gas exchange between O2 and CO2 occurs via diffusion in alveoli that are both ventilated and perfused

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9
Q

Right lung lobes are

A

UL, ML, LL

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10
Q

Left lobes are

A

UL and LL

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11
Q

Left lung fissure are

A

Oblique fissure

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12
Q

Right lung fissures are

A

Horizontal and oblique fissure

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13
Q

The pleura are what type of membrane

A

Serous

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14
Q

The 2 pleuras are

A
  1. Visceral pleura

2. Parietal pleura

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15
Q

Visceral pleura attaches to the

A

Lungs

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16
Q

Parietal pleura attaches to the

A

Chest wall

17
Q

Purpose of parietal pleura is to

A

Provide lubrication to reduce friction during breathing

18
Q

Negative intrapleural pressure is a combination of

A
  1. Lungs are elastic and want to recoil inwards

2. Chest wall wants to expand outwards

19
Q

True ribs attach to

A

T1-T7

20
Q

Surface anatomy of apex of lungs (anterior and posterior)

A

Anterior: 2.5cm above clavicle
Posterior: C7

21
Q

Surface anatomy of base of lungs (anterior and posterior)

A

Anterior: anteriorly to rib 6 (and laterally to rib 8)
Posterior: T10

22
Q

Surface anatomy of horizontal fissure of lungs (anterior and posterior)

A

Anterior: above 4th rib
Posterior: T3/4

23
Q

Primary respiratory muscles

A
  1. Diaphragm
  2. Scalenes
  3. External intercostals
24
Q

Other inspiratory muscles

A
  1. Parasternal intercostals

2. External intercostals

25
Q

Accessory respiratory muscles for inspiration

A
  1. SCM
  2. UFT
  3. Pec major and minor
  4. Serratus anterior
  5. Thoracic extensors
26
Q

Accessory respiratory muscles for expiration

A
  1. Abdominals

2. Internal intercostals