Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/29

Click to flip

29 Cards in this Set

  • Front
  • Back
Anterior mediastinum:
Location?
Filled with?
-anterior to heart
-btw sternum, pericardial sac
-filled with adipose, connective tissue
middle mediastinum
heart, pericardial sac
Superior mediastinum:
Location?
Contains (generally: 3)?
-btw root of neck and pericardial sac
-Thymus, great vessels, nerves (phrenic, vagus)
Thymus:
Location
Produces
-Superior mediastinum, partially into anterior mediastinum
-produces T-lymphocytes
Branches off of aorta
Ascending Aorta:
-coronary arteries (2?)
Aortic Arch:
-brachiocephalic artery
-lt common carotid
-lt subclavian
Phrenic nerve:
Origin
Location
Function
-C3, 4, 5
-Runs parallel to pericardial sac, anterior to root of lung
-motor innervation of diaphram, visceral sensory innervation of parietal (?) pleura
Sup. Mediast.:
Great vessels of the heart
aorta, pulmonary trunk, superior vena cava
Vagus Nerve:
Origin
Location
Function
Gives rise to
-CX
-Sup. Medias., dorsat to root of lung.
-gives rise to recurrent laryngeal artery
Left recurrent laryngeal nerve:
Origin
Location
-vagus nerve
-hooks underneath aortic arch (behind ligamentum arteriosum)
Carina
-ridge, canted a little toward left
-located at bronchi bifurcation
Posterior mediastinum:
Location
Important vessels (7)
-posterior to pericardial sac
-Descending aorta
-Azygous veins
Esophagus (vagal plexus)
-Thoracic duct
-Sympathetic trunks (splanchnic nerves)
-sup/inf vena cava
Location of thoracic duct
-post mediastinum
-btw azygos and aorta (anterior to aorta)
Splanchnic nerves branch off of the _____
sympathetic trunk
branches into the sup. vena cava
(rt/lt) subclavian and jugular --> (rt/lt) braciocephalic --> sup. vena cava (--> right atrium)
Azygous vein:
formed by
passes
drains into
Right side:
-formed by lumbar vein, intercostal veins
-passes post to lung root.
intercostal veins.
-drains into Sup. vena cava
Hemiazygous veins
Lt side:
-inf/sup hemiazygous veins.
-Join inf vena cava at about T8.
-Cross midline at about T8 and drain into azygous vein.
Thoracic duct:
origin
location
drains into
appearance
-arises from cisterna chyli (in abd.), (also has smaller rt lymphatic duct that drains rt arm, head, neck)
-post to esoghagus, ant to vertebral column, between azygous and hemiazygous veins
-drains into lt internal jugular vein/lt subclavian vein
-flat, thin whitish ribbon
cisterna chyli
drains lymph out of digestive system
Lymph nodes in thorax
-along descending trachea, esp. at bifurcation and hilus of each lung.
-also along esophagus, descending aorta, vertebral column
Nerves of the thorax (5)
-intercostal nerves
-sympathetic trunk
-splanchnic nerves
-phrenic nerve
-vagus nerve
What type of sensory fibers do splanchnic nerves contain and what do they innervate?
visceral motor and sensory. To the gut they also contain parasympathetic fibers.

Innervate viscera
Greater splanchnic nerve:
Origin
Location
Synapse
Innervates (2)
-T1-T7ish
-curves around to the anterior of the vertebral column in the abdomen.
-Descends to synapse with celiac ganglia
-enteric nervous system (foregut), adrenal medulla (catecholamine)
Splanchnic nerves of the mediastinum:
identify
Basic description (4)
greater (T1-7ish), lesser (T8-10ish), least (T11-12ish)
-preganglionic sympathetic fibers
-continuations of white rami communicantes that DO NOT SYNAPSE in symp chain
-pass into abdomen w/ aorta
-synapse on abd. aorta
Lesser splanchnic nerve:
Origin
Location
Synapse
Innervates
-T8-T10ish
-inferior and lateral to greater nerve.
-Synapses at celiac ganglia, or aortocorenal ganglia
-innervates midgut
Least splanchnic nerve:
Origin
Synapse
-T11-12 ish
-synapses in renal ganglia
Phrenic nerve:
Location
posterior to brachiocephalic veins/sup vena cava, anterior to everything else (aortic arch, pulm arteries, root of lung, pericardium)
Vagus nerve:
Origin
Fibers
Location
Branches
-CX
-parasymp to thorax and abdomen
-posterior to brachiocephalic veins, but anterior to arteries
-recurrent (inferior laryngeal nerves, esophageal plexus)
Left recurrent laryngeal:
Origin
Location
Innervates
-Vagus nerve
-loops under arch of aorta BEHIND lig. arteriosum. ascend along side of trachea to larynx (along with rt.)
-larynx?
Right recurrent laryngeal nerve:
Origin
Location
Innervates
-Vagus nerve
-loops under rt subclavian artery. Lies in groove btw trachea and esoghagus
-larynx?