Lab 14 navigation
Station 5: Pelvic Organs and Blood Vessels
This station is an overview of organs and vessels in the pelvis. We will circle back and add more details later in the year when we dissect this region.
Complete anatomy
Female pelvic organs
Complete anatomy
Male pelvic organs
Pelvic Organs
Identify the following organs in the female:
Urinary bladder
Rectum
Uterus
Fallopian (Uterine) tube
Ovaries
Broad ligament
Round ligament of uterus
Recto-uterine pouch (pouch of Douglas)
Vesico-uterine pouch
Identify the following organs in the male:
Urinary bladder
Rectum
Prostate
Seminal vesicles
Ductus deferens (pelvic portion)
Male urethra—has three parts: Prostatic, intermediate, spongy
Recto-vesical pouch
Pelvic Vessels
Identify the common iliac, internal iliac, and external iliac arteries.
Question
What becomes of the external iliac artery distal to the inguinal ligament?
Identify the following branches of the internal iliac artery.
Note
The branches are highly variable—trace them to their destinations to identify them.
From the posterior division:
Iliolumbar artery—ascends over the pelvic brim to the lower lumbar region
Lateral sacral arteries—pass into the anterior sacral foramina
Superior gluteal artery—exits the pelvic cavity through the greater sciatic foramen ABOVE the piriformis muscle
Complete anatomy
Posterior division of internal iliac artery
From the anterior division:
Umbilical artery:
Prenatally, the umbilical arteries conduct oxygen-poor blood from the fetus to the placenta for oxygenation and nutrient replenishment. In the fetus, the paired umbilical arteries ascend on the internal abdominal wall to the umbilicus.
The proximal part is called the patent part (it transmits blood)—superior vesical arteries to the bladder branch from the patent part
The part distal to the superior vesical arteries obliterates after birth. Postnatally, the obliterated part of the umbilical arteries are called the medial umbilical ligaments. They can be traced upwards to the umbilicus.
Obturator artery—trace it to the obturator canal in the obturator membrane
Inferior gluteal artery—exits the greater sciatic foramen BELOW the piriformis muscle
Internal pudendal artery—exits the greater sciatic foramen below the piriformis muscle (with the inferior gluteal artery); the major blood supply to the perineum
Uterine artery (in female)—as it approaches the cervix, it crosses over the ureter (“Bridge over Water”)
Middle rectal artery—often branches from the internal pudendal artery
Complete anatomy
Anterior division of internal iliac artery
Checklist, Lab #14
Checklist items at each of the five stations are indicated by checkboxes.
