ANATOMY
46
12.
Which one of the following structures passes posterior to the
root of the right lung – p90, 100, 149, 150 Moores
a.
hemiazygous vein
F - on left side drains into left subclavian vein Pg 90
b.
right vagus nerve
T
c.
right phrenic nerve
F - passes anterior to root of right lung Pg 149
d.
thoracic aorta
F - posterior to root of Left lung
e.
right recurrent laryngeal nerve
F - does not go low enough on right, hooks around subclavian vein
13.
With regard to the bronchopulmonary segments, the following
are true except p125 NM
a.
There are approximately 10 segments in each lung
T - 10 in the R, 8-10 in the L p125 NM
b.
The lingula is divided into upper and lower segments
T - p209 Lasts
c.
Fibrous septa separate the segments
T
d.
segmental bronchus with pulonary vein
F - really segmental bronchus+ a tertiary branch of pulm artery.
Drained by intersegmental v
SUMMARY:
- Separated from adjacent tissue by septa
- Supplied independently by a segmental bronchus and a tertiary
branch of the pulm artery
- Drained by intersegmental veins which lie in the connective tissue
btwn adjacent segments
- They are pyramidal in shape with the apex facing the lung root
- The largest subdivision of a lobe
- Named according to the segmental bronchi supplying them
14.
The most superficial structure in the thoracic inlet is the
a.
vagus nerve
F
b.
superior vena cava
T - p 183 Lasts p85 NM
c.
right subclavian artery
F
d.
left subclavian artery
F
e.
thoracic duct
F - Summary: Thymus, veins, vagus, arteries, airway, git, lymph
15.
The diaphragm
a.
has the oesophageal opening opposite the T8 vertebrae
F - this is SVC
b.
is supplied by C4, 5, 6
F - C3,4,5
c.
has a major role in expiration
F - it is a passive process in normal respiration
d.
has a vena caval opening at T10
F - this is T8
e.
has an aortic opening opposite T12
T
16.
Which muscle is NOT used in forced expiration
a.
transversus abdominis
F
b.
rectus abdominis
F
c.
diaphragm
T
d.
external oblique
F
e.
internal oblique
F - **NB OBLIQUES is a distractor: don’t confuse with external intercostals
(in forced insp) and int intercostals (in forced exp).
Both obliques are used in forced expiration
17.
Which vessel passes directly behind the right hilum
a.
right phrenic nerve
F
b.
right vagus nerve
T - This one is prob true too
c.
azygous vein
T - p184 NM
d.
internal mammary artery
F
e.
hemi-azygous vein
F
f.
aorta
F
18.
The breast
a.
Is a modified sebaceous gland
F - I thought it was a modified sweat gland
b.
Is supplied by the lateral thoracic artery and IMA
T - and intercostals
c.
Overlies pec minor and part of lat dorsi
F - pec major 2/3, 1/3 over pec major
d.
Drains predominately to subclavian nodes
F - Mainly axillary nodes
