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Questions and Answers
Which muscle forms the posterior abdominal wall along with the psoas major and iliacus?
Which muscle forms the posterior abdominal wall along with the psoas major and iliacus?
- Quadratus lumborum (correct)
- Rectus abdominis
- Transversus abdominis
- External oblique
What is the relationship of the anterior surface of the right kidney to other structures in the posterior abdominal wall?
What is the relationship of the anterior surface of the right kidney to other structures in the posterior abdominal wall?
- It is in contact with the spleen
- It is in contact with the diaphragm
- It is posterior to the liver (correct)
- It is anterior to the adrenal glands
Which artery supplies blood to the kidneys?
Which artery supplies blood to the kidneys?
- Abdominal aorta
- Renal artery (correct)
- External iliac artery
- Inferior vena cava
What is the function of the diaphragm?
What is the function of the diaphragm?
Which muscles are referred to as iliopsoas muscle when they pass into the thigh?
Which muscles are referred to as iliopsoas muscle when they pass into the thigh?
What is not a function of the iliopsoas muscle?
What is not a function of the iliopsoas muscle?
Where are the kidneys located in the posterior abdominal wall?
Where are the kidneys located in the posterior abdominal wall?
Which kidney is somewhat lower than the other due to its relationship with the liver?
Which kidney is somewhat lower than the other due to its relationship with the liver?
What covers a large part of the anterior surface of the right kidney?
What covers a large part of the anterior surface of the right kidney?
Which level does the abdominal aorta bifurcate into the right and left common iliac arteries?
Which level does the abdominal aorta bifurcate into the right and left common iliac arteries?
Which structures do not cross the anterior surface of the inferior vena cava?
Which structures do not cross the anterior surface of the inferior vena cava?
Which veins are not tributaries to the inferior vena cava?
Which veins are not tributaries to the inferior vena cava?
Which lumbar veins drain directly into the inferior vena cava?
Which lumbar veins drain directly into the inferior vena cava?
Where do the lumbar plexus nerves emerge on the posterior abdominal wall?
Where do the lumbar plexus nerves emerge on the posterior abdominal wall?
Which bones make up the superior bony framework of the posterior abdominal wall?
Which bones make up the superior bony framework of the posterior abdominal wall?
Which muscles are involved in the flexion of the thigh at the hip joint?
Which muscles are involved in the flexion of the thigh at the hip joint?
Which ligament connects the crura of the diaphragm across the midline and passes anterior to the aorta?
Which ligament connects the crura of the diaphragm across the midline and passes anterior to the aorta?
Which of the following is NOT a structure found in the renal medulla?
Which of the following is NOT a structure found in the renal medulla?
Which of the following is NOT a function of the renal cortex?
Which of the following is NOT a function of the renal cortex?
Which of the following is TRUE about the renal arteries?
Which of the following is TRUE about the renal arteries?
Which of the following is NOT a feature of the ureters?
Which of the following is NOT a feature of the ureters?
Which of the following is TRUE about the suprarenal glands?
Which of the following is TRUE about the suprarenal glands?
Which nerve arises from the anterior rami of nerves L2 and L3, emerges from the lateral border of the psoas major muscle, and passes obliquely downward across the iliacus muscle toward the anterior superior iliac spine?
Which nerve arises from the anterior rami of nerves L2 and L3, emerges from the lateral border of the psoas major muscle, and passes obliquely downward across the iliacus muscle toward the anterior superior iliac spine?
Which nerve descends through the substance of the psoas major muscle, emerging from the lower lateral border of the psoas major and lies between the lateral border of the psoas major and the anterior surface of the iliacus muscle?
Which nerve descends through the substance of the psoas major muscle, emerging from the lower lateral border of the psoas major and lies between the lateral border of the psoas major and the anterior surface of the iliacus muscle?
Which nerve descends in the psoas major muscle, emerges from its medial side near the pelvic brim, continues posterior to the common iliac vessels, and passes across the lateral wall of the pelvic cavity to enter the obturator canal?
Which nerve descends in the psoas major muscle, emerges from its medial side near the pelvic brim, continues posterior to the common iliac vessels, and passes across the lateral wall of the pelvic cavity to enter the obturator canal?
Which nerve passes over the ala (wing) of the sacrum and descends into the pelvis to participate in the formation of the sacral plexus along with the anterior rami of the S1-S4 nerves?
Which nerve passes over the ala (wing) of the sacrum and descends into the pelvis to participate in the formation of the sacral plexus along with the anterior rami of the S1-S4 nerves?
What movements are lumbar vertebrae responsible for?
What movements are lumbar vertebrae responsible for?
Which bones form the midline boundary of the posterior abdominal wall?
Which bones form the midline boundary of the posterior abdominal wall?
What ribs complete the superior bony framework of the posterior abdominal wall?
What ribs complete the superior bony framework of the posterior abdominal wall?
Which crus is the longest and broadest and is attached to the bodies of vertebrae L1 to L3?
Which crus is the longest and broadest and is attached to the bodies of vertebrae L1 to L3?
Which crus is attached to vertebrae L1 to L2?
Which crus is attached to vertebrae L1 to L2?
Match the ligaments to their corresponding characteristic
Match the ligaments to their corresponding characteristic
Match each diaphragmatic opening to its corresponding accompanied structure/ what it transmits
Match each diaphragmatic opening to its corresponding accompanied structure/ what it transmits
What additional structures pass through the diaphragm?
What additional structures pass through the diaphragm?
Where does the sympathetic trunk start and end?
Where does the sympathetic trunk start and end?
Match each muscle to its origin
Match each muscle to its origin
Match each muscle to its Insertion
Match each muscle to its Insertion
Match each muscle to its innervation
Match each muscle to its innervation
Match each muscle to its actions
Match each muscle to its actions
Psoas major and iliacus muscles pass deep to the inguinal ligament
Psoas major and iliacus muscles pass deep to the inguinal ligament
What supplies innervation to the iliopsoas muscles?
What supplies innervation to the iliopsoas muscles?
Match each structure to its relationship to the kidneys
Match each structure to its relationship to the kidneys
Which layer of fat is found outside the renal capsule, completely surrounds the kidneys and is enclosed by renal fascia?
Which layer of fat is found outside the renal capsule, completely surrounds the kidneys and is enclosed by renal fascia?
Which layer of fat completes the fat and fascia associated with the kidney and accumulates posterior and posterolateral to each kidney?
Which layer of fat completes the fat and fascia associated with the kidney and accumulates posterior and posterolateral to each kidney?
Which part of the kidney is easily removable except during disease?
Which part of the kidney is easily removable except during disease?
If the inferior vena cava is blocked, which vein becomes an important collateral channel between the lower and upper body?
If the inferior vena cava is blocked, which vein becomes an important collateral channel between the lower and upper body?
Describe the flow of urine
Describe the flow of urine
Where do renal calculi (stones) typically become lodged in the ureter?
Where do renal calculi (stones) typically become lodged in the ureter?
Which of the following is NOT true of renal veins
Which of the following is NOT true of renal veins
What is NOT part of the innervation supply of the ureters?
What is NOT part of the innervation supply of the ureters?
Where is pain in the kidneys (due to distension) referred to?
Where is pain in the kidneys (due to distension) referred to?
The renal plexus is predominantly comprised of parasympathetic fibers (promote vasoconstriction to decrease glomerulus filtration rate)
The renal plexus is predominantly comprised of parasympathetic fibers (promote vasoconstriction to decrease glomerulus filtration rate)
The kidneys receive input from the aorticorenal ganglion (lesser splanchnic nerve) and the least splanchnic nerve (directly innervates the renal plexus)
The kidneys receive input from the aorticorenal ganglion (lesser splanchnic nerve) and the least splanchnic nerve (directly innervates the renal plexus)
Match the abdominal aorta to its relationships
Match the abdominal aorta to its relationships
Left common iliac artery branches into
Left common iliac artery branches into
What does NOT drain into pre-aortic lymph nodes (anterior to abdominal aorta)
What does NOT drain into pre-aortic lymph nodes (anterior to abdominal aorta)
What does not drain into Lateral aortic/lumbar nodes (para-aortic nodes)?
What does not drain into Lateral aortic/lumbar nodes (para-aortic nodes)?
What nerves are part of the lumbar plexus
What nerves are part of the lumbar plexus
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Study Notes
Posterior Abdominal Wall
- The quadratus lumborum muscle forms the posterior abdominal wall along with the psoas major and iliacus.
- The right kidney is related anteriorly to structures such as the liver and duodenum, making it somewhat lower than the left kidney.
- The abdominal aorta bifurcates into the right and left common iliac arteries at the level of the L4 vertebra.
Kidney Anatomy and Vasculature
- The renal arteries supply blood to the kidneys.
- A large part of the anterior surface of the right kidney is covered by the liver.
- Certain structures, such as the left renal vein and pancreas, do not cross the anterior surface of the inferior vena cava.
Renal System Function
- The renal cortex is primarily involved in filtration, while the renal medulla is responsible for urine concentration.
- Functions of the iliopsoas muscle include flexing the thigh at the hip joint, stabilizing posture, but not extending the hip.
- If the inferior vena cava is blocked, the azygos vein becomes an important collateral channel.
Nervous System and Plexus
- The ilioinguinal nerve, arising from the anterior rami of L2 and L3, passes downward across the iliacus muscle.
- The femoral nerve descends through the substance of the psoas major muscle.
- The obturator nerve emerges from the medial side of the psoas major and travels to the pelvic cavity.
- The sympathetic trunk runs from the neck down to the pelvis.
Muscular and Ligamentous Structures
- The diaphragm functions in respiration and separates the thoracic cavity from the abdominal cavity.
- The crura of the diaphragm link to the lumbar vertebrae, with the right crus attached to L1-L2 and the left to L1-L3.
Kidney Structure and Fat Layers
- The renal capsule is surrounded by a layer of perirenal fat, with renal fascia enclosing the kidneys.
- The renal cortex can be easily removed except during pathological conditions, while the renal medulla is less accessible.
Urinary Tract and Calculi
- Renal calculi typically get lodged in the ureter at areas of anatomical constriction.
- Pain caused by kidney distension is generally referred to the lower back and groin area.
Lymphatic Drainage and Nerves
- Pre-aortic lymph nodes do not drain lymph from the lateral aortic/lumbar nodes (para-aortic nodes), which drain abdominal regions.
- The lumbar plexus includes the genitofemoral, femoral, and obturator nerves.
Lumbar Vertabrae and Movements
- Lumbar vertebrae are primarily responsible for flexion and extension of the lower back, as well as lateral flexion.
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