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Creighton Anatomy > Mediastinum > Flashcards

Mediastinum Flashcards

1
Q

Anterior Mediastinum

A

Between sterum/transverse thoracis muscles and pericardial sac

Filled w/ loose connective tissue and fat

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2
Q

Superior Mediastinum

A

Thymus
Great Vessels
Nerves
Trachea
Esophagus
Thoracic Duct
Prevertebral muscles

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3
Q

Great Vessels

A

Left & Right brachiocephalic vein (combine to for superior vena cava)

Aortic Arch

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4
Q

Phrenic Nerve

A

runs anteriorly from heart to diaphragm

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5
Q

Vagus Nerve

A

runs posteriorly to heart

Left and right recurrent

somatic efferent/afferent & parasympathetic

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6
Q

Parts of Posterior Mediastinum

A

Thoracic Aorta
Thoracic Duct
Lymph Nodes
Esophagus
Esophageal Plexus
Trachea

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7
Q

Thoracic Sympathetic Trunk

A

Ganglion: postganglionic (postsynaptic) neurons

White Ramus: preganglionic fibers enter chain/trunk (leave nerves)

Gray Ramus: postganglionic fibers exit chain/trunk (enter nerves)

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8
Q

Venous Drainage

A

azygos system of veins entering and draining into superior vena cava

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9
Q

Tissues Needs

A

Oxygen, carbon dioxide removal
Substrates - amino acids, lipids, & glucose
Ions
Hormones

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9
Q

Acute Blood Flow Control

A

Vasodilation & Vasoconstriction

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10
Q

Long Term Blood Flow Control

A

Change in vessel size
Anastomoses
Angiogenesis

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11
Q

Intracellular Blood Compartment

A

Fluid - 28 Liters

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12
Q

Extracellular Blood Compartment

A

Blood Plasma - 3 Liters
Interstitial Fluid - 11 Liters
Transcellular Fluid

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13
Q

Interstitium

A

Between cells & varies depending on tissue type
Filled with fluid and fine, web-like filaments

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14
Q

Diffusion

A

Transfer of substances across capillary membrane due to thermal motion water molecules and dissolved substances

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15
Q

Osmosis

A

Movement of water across membranes in response to concentration of solutes

16
Q

Mechanical Factors

A

Negative pressures in most interstitial spaces
Capillary filtration pressures

17
Q

Extracellular Edema

A

Caused by loss of negative pressure in interstitial space

Creighton Anatomy (13 decks)

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