Abdomen, Pelvis and Perineum 3 Flashcards
What is the function of the kidneys? (2)
filter the blood and create urine
Where do the kidneys sit? (3)
Behind the peritoneum on either side of the lumbar vertebrae at T12 to L3
Which kidney sits lower and why?
Right kidney, liver is above
What are the four layers covering each kidney, from outermost to innermost?
- Paranephric fat
- Renal fascia
- Perinephric fat
- Renal capsule
Which structures lie anterior to the left kidney? (6)
- Left adrenal gland
- Spleen
- Stomach
- Pancreas (body and tail)
- Left colic flexure
- Jejunum
Which structures lie posterior to the left kidney? (5)
- Diaphragm
- 11th and 12th ribs
- Psoas major
- Quadratus lumborum
- Transversus abdominis
Which structures lie anterior to the right kindey? (4)
- Right adrenal gland
- Liver
- Duodenum
- Right colic flexure
Which structures lie posterior to the right kidney? (5)
- Diaphragm
- 12th rib
- Psoas major
- Quadratus lumborum
- Transversus abdominis
What does the hilum of the kidney lead into?
The renal sinus
What lies inside the renal sinus? (4)
- calices
- renal pelvis
- renal blood vessels
- fat
What are the two main parts of the kidney?
Outer cotex and inner medulla
What does the medulla contain?
Renal pyramids
What are renal papillae?
Apices of the renal pyramids which project into the renal sinus
Where is urine from the renal papillae collected?
The minor calices which unite to form the major calices
What is the renal pelvis?
Fusion of the major calices, continuous with the ureter
Why is there asymmetery between the blood supply of each kidney?
The abdominal aorta is on the left side of the abdomen and the IVC is on the right
Which renal artery is longer?
Right renal artery
Which renal vein is longer?
Left renal vein
What is the blood supply of the kidneys?
Left and right renal arteries respectively, branches of the abdominal aorta
What do the kidneys drain into?
Left and right renal veins respectively, branches of the inferior vena cava
Which lies anterior to the other: renal arteries and renal veins?
The renal veins both lie anterior to the renal arteries
Where do the adrenal glands lie?
Right above each kidney, enclosed in the renal fascia
What shape is the right adrenal gland?
Pyramid
What shape is the left adrenal gland?
Semilunar
Which adrenal gland is larger?
Left
What is the blood supply for the adrenal glands?
Superior, middle and inferior adrenal arteries
What is the origin of the superior adrenal arteries?
Inferior phrenic artery
What is the origin of the middle adrenal arteries?
Abdominal aorta
What is the origin of the inferior adrenal arteries?
Renal artery
What is the venous drainage of the adrenal glands?
Left and right adrenal veins
Which adrenal vein is shorter?
Right, drains almost immediately into the IVC
What are the ureters?
Smooth muscular tubes that transport urine from the kidneys to the bladder
How do the ureters project urine?
Peristalsis
What are the three restriction zones of the ureter?
- the uteropelvic junction
- the pelvic brim
- the vesicouteric junction
What can happen at the restriction zones?
Renal stones become stuck
What do the ureters pass over?
the tips of the transverse processes of the lumbare vertebrae
What do the ureter pass under once in the pelvic cavity?
The ductus deferens in men and uterine artery in women
Where do the ureters end?
The base of the bladder as they enter the trigone
Where is the bladder located?
Directly posterior to the pubic symphysis
What is the role of the bladder?
to store up to 500ml of urine at any one time and to carry out micturition
What is the difference between an empty and full bladder?
Empty = lies entirely in the pelvic cavity
Full = extends up to the suprapubic region of the abdomen
What are the relations of the bladder in women? (3)
- anterior to the vagina and rectum
- anteroinferior to the uterus
What are the relations of the bladder in men? (2)
- anterior to the rectum
- superior to the prostate
What is the blood supply to the ureters? (4)
Multiple small arteries branched from the renal arteries, abdominal aorta, gonadal vessels and iliac arteries
What is the uterus?
a hollow muscular organ that functions to nourish a fertilized egg until birth
Where is the uterus located?
The midline between the bladder and rectum
What is the superior surface of the uterus covered by?
the broad ligament perioteum
What are the vesicouterine and rectouterine pouches?
Pouches of peritoneum which hang in spaces between the uterus and bladder or rectum respectively
What is the cervix?
the neck of the uterus, a narrow canal with a superficial and deep opening