Posterior Abdominal Wall - Anatomy Resources · Posterior Abdominal Wall Dr. Morton ANAT 6010 Page...
Transcript of Posterior Abdominal Wall - Anatomy Resources · Posterior Abdominal Wall Dr. Morton ANAT 6010 Page...
Posterior Abdominal WallPosterior Abdominal Wall
Dr. MortonDr. Morton
ANAT 6010ANAT 6010 Page 26Page 26
MusclesMuscles
•• Psoas majorPsoas major
and minorand minor
•• IliacusIliacus
•• QuadratusQuadratus
lumborumlumborum
•• DiaphragmDiaphragm
xx
Unit 2, p26Unit 2, p26
Diaphragm and Related StructuresDiaphragm and Related Structures
Unit 2, p26Unit 2, p26
T8T8
T10T10
T12T12
Ventral rami review
• Cervical plexus
• Brachial plexus
• Thoracic nn.
• Lumbar plexus
• Sacral plexus
Unit 2, p27Unit 2, p27
T12: SubcostalT12: Subcostal
L1: L1: IliohypogastricIliohypogastric
L1: L1: IlioinguinalIlioinguinal
Dermatomes and Peripheral NervesDermatomes and Peripheral Nerves
Cutaneous Fields
Lateral fem. cut. n.(L2-L3)
Anterior fem. cut. n.(L2-L4)
Lateral fem. cut. n.(L2-L3)
Anterior fem. cut. n.(L2-L4)
L5
L3
L1
L2
L4
Cutaneous Fields
Lateral fem. cut. n.(L2-L3)
Anterior fem. cut. n.(L2-L4)
L5
L3
L1
L2
L4
Dermatomes vs. Cutaneous Fields
Dermatomes and Peripheral NervesDermatomes and Peripheral Nerves
Unit 2, p27Unit 2, p27
Sympathetic Splanchnic NervesSympathetic Splanchnic Nerves
Unit 2, p27Unit 2, p27
Sympathetic Nerve PathSympathetic Nerve Path
Unit 2, p27Unit 2, p27
Parasympathetic Splanchnic NervesParasympathetic Splanchnic Nerves
Unit 2, p28Unit 2, p28
Abdominal AortaAbdominal Aorta
Unit 2, p29Unit 2, p29
Inferior Vena CavaInferior Vena Cava
•• Courses to the right of the midlineCourses to the right of the midline
•• Largest vein in the bodyLargest vein in the body
•• No valves (bidirectional flow, depending onNo valves (bidirectional flow, depending on
pressure gradient)pressure gradient)
•• Tributaries generally follow the similarly namedTributaries generally follow the similarly named
arteriesarteries
•• Exceptions existExceptions exist
•• Left gonadal v drains into the left renal vLeft gonadal v drains into the left renal v
•• Begins at L5, where the common iliac veins joinBegins at L5, where the common iliac veins join
Unit 2, p29Unit 2, p29
Inferior Vena CavaInferior Vena Cava
LymphaticsLymphatics
Unit 2, p30Unit 2, p30
Adrenals, Kidneys, Adrenals, Kidneys, UretersUreters
Unit 2, p31Unit 2, p31
Adrenal (Suprarenal) GlandsAdrenal (Suprarenal) Glands
•• Located on the superior pole of each kidneyLocated on the superior pole of each kidney
•• Separated from the kidneys by fasciaSeparated from the kidneys by fascia
•• Two partsTwo parts
•• CortexCortex
•• Mesodermal in originMesodermal in origin
•• Secretes corticosteroids and androgensSecretes corticosteroids and androgens
•• MedullaMedulla
•• Neural crest in originNeural crest in origin
•• Secrete catecholaminesSecrete catecholamines
•• Epinephrine (adrenaline)Epinephrine (adrenaline)
•• Norepinephrine (noradrenaline)Norepinephrine (noradrenaline)
Adrenal Glands, continuedAdrenal Glands, continued
•• Arterial supplyArterial supply
•• Superior adrenal arteriesSuperior adrenal arteries
•• 6-8 branches from each inferior6-8 branches from each inferior
phrenic aphrenic a
•• Middle suprarenal arteriesMiddle suprarenal arteries
•• 1 or more from the abdominal aorta1 or more from the abdominal aorta
•• Inferior adrenal arteriesInferior adrenal arteries
•• 1 or more from each renal artery1 or more from each renal artery
Adrenal Glands, continuedAdrenal Glands, continued
•• Venous drainageVenous drainage
•• Suprarenal veinsSuprarenal veins
•• Right is short and empties into theRight is short and empties into the
inferior vena cavainferior vena cava
•• Left is longer and empties into theLeft is longer and empties into the
left renal veinleft renal vein
Kidneys to the BladderKidneys to the Bladder
KidneysKidneys
Unit 2, p31Unit 2, p31
Autonomic Nerves to the KidneysAutonomic Nerves to the Kidneys
Unit 2, p32Unit 2, p32
UretersUreters
Unit 2, p33Unit 2, p33
Urinary BladderUrinary Bladder
Unit 2, p33Unit 2, p33
Urinary BladderUrinary Bladder
Unit 2, p33Unit 2, p33
Urinary Bladder InnervationUrinary Bladder Innervation
Unit 2, p34Unit 2, p34
Pg. 34
Pg. 34