low Respiratory Tract Flashcards

1
Q

Name a flexible tube in the midline and is a continuous of larynx?

A

Trachea

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2
Q

Explain in Level does the the trachea lies on?

A

from C6 vertebrae to T4/T5 vertebral level(mediastinum).

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3
Q

Explain the C-shaped cartilage of trachea.

A
  • Orientated horizontally
    • Open part (of C shape) faces posteriorly
    • Embedded in tracheal wall
    • Holds trachea open
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4
Q

A hooked liked shaped cartilage?

A

Carina

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5
Q

where is the carina cartilage found???

A

found in the lowest cartilage and projects posteriorly in the midline between origins of main bronchi..

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6
Q

what structure connects adjacent tracheal cartilages?

A

Annular ligaments

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7
Q

The posterior wall of Trachea consist of?

A

Trachealis muscle- smooth muscle.

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8
Q

the Relations of trachea?

A

posterior- esophagus
anterior - muscles
right-crossed laterally by azygos vein/ right vagus nerve
left side by arch of aorta/vagus nerve

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9
Q

The main/primary Bronchi

A

Trachea divides into left and right main bronchi.
enter root of the lung.
Passes through hilum into lung.

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10
Q

Right main Bronchus

A

shorter and wider
courses more vertically

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11
Q

Left main bronchus

A

longer and narrower
courses more
horizontally

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12
Q

if foreign bodies are perhaps inhaled which main bronchi ls likely to receive it?

A

bodies enter right main bronchus more frequently (than left), because of its wider diameter and more vertical orientation

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13
Q

bronchi that supply the lobes of the lungs

A

lobar/ secondary bronchi

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14
Q

lobes supplied by the right lobar bronchi?

A

Superior lobar bronchus
Middle lobar bronchus
Inferior lobar bronchus

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15
Q

lobes supplied by the left bronchi.

A

Superior lobar bronchus
Inferior lobar bronchus

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16
Q

lobar bronchi divide into which bronchi that is within lung?

A

segmental/tertiary bronchi

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17
Q

Which part of the lung is supplied by segmental bronchi

A

bronchopulmonary segments of lungs

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18
Q

Bronchioles

A

Segmental bronchi divide into bronchioles.
No cartilages present in their walls.
Subdivide to supply respiratory surfaces.

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19
Q

subdivision of bronchioles

A

conducting—>terminal bronchioles—->respiratory bronchioles

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20
Q

Which structure is the site of gas exchange.

A

Alveoli

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21
Q

define the lungs??

A

Organs of respiration
One on either side of mediastinum
- Left and right lungs
Surrounded by pleural cavities

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22
Q

explain the apex and base of the lung?.

A

Apex
- Projects above 1st rib and into root of neck

Base
- Sits on diaphragm
- Diaphragmatic surface

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23
Q

The costal surface of the lung

A

lies adjacent to ribs and intercostal spaces.
indented by ribs.

24
Q

Mediastina surface

A

Lies against mediastinum (anteriorly) and
vertebral column (posteriorly)
- Indented by structures in mediastinum
- Contains hilum of lung

25
Q

The anterior border

A

sharp
separates costal and mediastinal surface

26
Q

posterior border

A
  • Smooth and rounded
    • Separates costal and mediastinal surfaces
27
Q

inferior border

A

Inferior border
- Sharp
- Separates base from costal and mediastinal
surfaces

28
Q

which structure is a short tubular collection of structures, together attach lung to mediastinum.

A

Root of the lung

29
Q

Within each root what is located in it and also where

A

also located in the hilum.

A main bronchus
- A pulmonary artery
- Two pulmonary veins
- Bronchial vessels
- Nerves and lymphatics

30
Q

Superior lobar bronchus

A

Superior lobar bronchus arises from main bronchus in root of lung (not within lung itself, as on left side)

31
Q

right pulmonary artery

A

Right pulmonary artery gives of a branch to superior lobe in root (not within lung itself, as on left side)
- Main vessel continues through hilum, giving
off a second branch to superior lobe, before
dividing to supply remaining lobes

RM- GIVES OFF SUPERIOR LOBE WITHIN IT.

32
Q

Relations of the root of the lung

A

anteriorly- Phrenic nerve
posteriorly - vagus nerve

33
Q

Region or structure at which vessels and nerves or other structure emerge from apart.

A

Hilum

34
Q

The pulmonary ligament

A

is thin blade-like fold of pleura

35
Q

A thin blade-like fold of pleura that projects inferior from root of lung?

A

Pulmonary ligament

extends from the hilum to the mediastinum
stabilizes the position of inferior lung lobe.

accommodate movement of lungs

36
Q

the content of the right lung

A

Larger than left

3 lobes:
- Superior lobe
- Middle lobe
- Inferior lobe

2 fissures:
- Oblique fissure
- Horizontal fissure

37
Q

what separates the inferior lobe from the superior and middle lobes?

A

Oblique Fissure

38
Q

Approximate to which position during quiet inspiration:

A

at level of T4 Spinous process
crosses the 5th intercostal space
follow curve of rib 6

39
Q

horizontal fissure

A

separate superior and middle lobes
Follows 4th intercostal space from sternum
- Until meeting oblique fissure as it
crosses rib 5

40
Q

The left lung

A

Smaller than right

2 lobes:
- Superior lobe
- Inferior lobe

1 fissure:
- Oblique fissure

41
Q

Approximate position during quiet inspiration:
of left lung

A

Begins between spinous processes of T3
and T4 vertebrae
- Crosses 5th intercostal space laterally
- Follows curve of rib 6 anteriorly

42
Q

what is found on the anterior border of the lungs and which lung

A

lingula and cardiac notch

43
Q

the cardiac notch

A
  • Along inferior aspect
    • Formed by heart projecting into left
      pleural cavity from mediastinum
44
Q

lingula

A

Tounge-like extension
situated on the lower part of the superior lobe

45
Q

Smallest functionally independent region of a lung?

A

bronchopulmonary segment

46
Q

how many of these segments are in each lung ?

A

10 in each lung (some fused in the left lung)
can be removed without affecting adjacent regions.

47
Q

why do they function on their own?

A

because they have their own blood supply

48
Q

shape of the lung

A

irregular cone shape

apex: the origin of its segmental bronchus

base: Projected peripherally onto lung surface.

49
Q

shape of the lung

A

irregular cone shape

apex: the origin of its segmental bronchus

base: Projected peripherally onto lung surface.

50
Q

Blood supply of these bronchopulmonary segments?

A

branch of pulmonary artery
segmental bronchus

51
Q

Bronchial arteries ?

A

1 on the right
2 on the left

run along the posteriorly to bronchi
enter lung to supply pulmonary arteries

52
Q

Name 2 of these left bronchial arteries ?

A

they arise from the anterior of the thoracic aorta

Superior bronchial artery- at level of T5
inferior bronchial artery- at the 5th intercostal space and inferior to left main bronchi

53
Q

the right branchial artery

A

normally arise from the 3rd posterior intercostal artery

occasionally from the superior left bronchial artery

54
Q

Into which structures does this bronchial vein drains into?

A

Azygos vein right side
pulmonary veins on the left atrium
superior intercostal vein

55
Q

innervation of structures of the lung and visceral pleura.

A

Anterior and posterior pulmonary plexus

56
Q

The content of pulmonary plexuses

A
  • Interconnected
    • Anterior smaller than posterior
    • Lie anterior and posterior to tracheal bifurcation
      and main bronchi
    • Distributed along branches of airway and vessels
    • Arise from sympathetic trunks (responsible for
      dilation of bronchioles) and vagus nerves
      (responsible for constriction of bronchioles)