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Transcript of pelvis
„Selected Chapters from theCross-Sectional Anatomy
of the Human Body”
Pelvis and genital organs András Jakab MD, Levente István Lánczi MD
Pelvis – anatomical landmarks on cross-sectional images Bones
sacrum (S1-S5), iliac bone acetabulum pubic symphysis ischial tuberosity
Reproductive organs Urinary bladder, rectum
promontorysacrum, lateral part
Iliac bone
pubic bonepubic symphysis
ischial bone
coccyx
ala of ilium
sacroiliac joint
L4
L5
sacrumHip joint
head of femur
neck of femur
symphysis pubis
obturator foramen
superior ramus of
pubis
Inferior ramus
of pubis
ramus of ischium
Iliac crest
ant. sup. iliac spine
ant. inf. iliac spine
sacrum lateral part
ischiadic spine
promontory
sacrum, lateral part
sacral canalsuperior articular process
wing of sacrumbasis of sacrum
lateral partpromontory
basis of sacrum
sacral wing
superior articular process
apex
anterior sacral foramen
sacral canalsuperior articular process
median sacral crest
intermediate sacral crest
lateral sacral crest
Arteries – common iliac artery and its branches
Bifurcation of abdominal aorta oszlás: L4 Bifurcation of common iliac artery: in the level
of sacroiliacal joint External iliac a.
On the medial part of psoas major m. Under the inguinal lig. – femoral a. Branches:
inferior epigastric a. deep circumflex iliac a.
External iliac a. – femoral a.
Internal iliac a. and its branches
Parietal branches iliolumbal a. (segmental lumbal arteries) lateral sacral a. (sacral canal) superior / inferior gluteal a. obturator a. – acetabul ramus – femur head!!
Internal iliac a. and its branches
Visceral branches umbilical a. (umbilical lig) superior vesical a. inferior vesical a. uterine a. median rectal a. internal pudendal a. deep/superficial arteries of the penis
iliolumbal a.
lat. sacral a.
sup. gluteal a.
inf. gluteal a.
internal pudendal a.
obturator a.
umbilical a.
superior vesical a.
uterine a. median rectal a.
Muscles of pelvis, abdomen and back Muscles of abdomen
rectus abdominis m. external oblique abdominal m. internal oblique abdominal m. transverse abdominal m.
Dorsal muscles psoas major m., iliacus m. erector spinae m., gluteus maximus, medius, inferius mm.
Perineal muscles internal and external obturator mm. levator ani m. coccygeal m. urogenital diaphragm puborectal m. int. and ext. anal sphincter m.
Muscles of abdomen
rectus abdominis m.external oblique abdominal m. internal oblique abdominal m. transverse abdominal m.
Dorsal muscles
psoas major m.iliacus m.erector spinae m.gluteus maximus,medius, inferius mm.
obturator internus m.
coccygeus m.
obturator internus m.
coccygeus m.
levator ani m.
int / ext. anal sphincter m.
obturator externus m.
obturator internus m.
pectineus m.
Outer hip muscles and extensors
gluteus maximus m.levator ani m.
Perineal muscles
obturator fascia
levator ani m.
ext. anal sphincter m.
transverseperineal
mm.
gluteus maximus m.
ischiocavernosus m.
bulbospongiosus m.
bulbocavernosus m.
Urogenital diaphragm
Pubococcygeus m.
Iliococcygeus m.
Coccygeus m.
Sacrococcygeus m.
Rectococcygeus m.
Sigmoid colon and rectum
levator ani m.
ext. anal sphincter m.
int. anal sphincter m.
levator ani m. int / ext. anal sphincter m. Blood supply:
Sigmoid: inf. mesenteric a. –> sigmiod aa. Rectum: inf. mesenteric a. –> sup. rectal a.
internal iliac a. –> median/inf. rectal a.
superior rectal a.
median rectal a.obturator internus m.
levator ani m.
ext. anal sphincter m.
Inferior rectal a.
Urinary bladder, ureter, urethra Fundus, body, apex Ureter (medial-anterior part of the psoas
major m.) Male: ductus deferens, seminal vesicle
prostate gland
Urogenital tract of the male
Kidney – renal pelvis – ureter – urinary bladder Prostate Seminal vesicule – ejaculatory duct Testis Epididymis – ductus deferens –
ejaculatory duct Urethra Penis
Prostate – seminal vesicule
ductus deferens
seminalvesicule
prostate, medial lobe
prostate, right/left lobe
urethra
Coronal AXIAL
Male pelvis
T2 weighted, axial MRI
Source: info-radiologie.ch
Female pelvis
T2 weighted, axial MRI
Source: info-radiologie.ch