Pelvic Viscera Pt. 1 Flashcards
Lie within the bony pelvis between the pelvic floor and the peritoneum primarily occupying the subperitoneal space
Pelvic viscera
Generally consists of collecting vessels, urinary bladder, uterus, rectal ampulla (connected to excretory tubes), urethra, vagina, and the anorectal junction
Pelvic Viscera
The filling and voiding of the collecting vessels is facilitated by their location in the loose areolar tissue of the
Subperitoneal space
Flow through the excretory tubes is controlled by the
Pelvic and U-G Diaphragms
A pelvic viscera structure that stores urine
Bladder
The bladder consists of a smooth muscle called the
Detrusor
Where is the bladder located?
Posterior to the pubic bone in the retropubic space
What are the 4 parts of the bladder?
- ) Anterior facing apex
- ) Posterior base
- ) Superior surface
- ) Two inferolateral surfaces
The fundus and inferolateral surfaces converge to form the
Neck
Extends from the neck of the bladder and conveys urine from the bladder to the outside of the body
Urethra
A triangular region associated with the base and neck of the bladder
Trigone
Where the bladder neck funnels into the urethra
The base of the trigone
Enters the bladder obliquely at the other two corners of the trigone
Ureters
This design causes the ureteric openings to be closed, acting like a valve during
Bladder contraction
Retains its shape regardless of whether the bladder is distended or empty
Trigone
The rest of the detrusor muscle has
Folds or Rugae
Muscolomembranous tube about 10cm in length
Vagina
Located in a superoposterior direction in the pelvis between the bladder (anteriorly) and the rectum (posteriorly)
Vagina
Enter the anterior wall of the vagina superiorly
Uterus and cervix
Recesses formed around the vaginal portion of the cervix
Vaginal fornices
Can be exploited during a bimanual digital vaginal exam to palpate pelvic visceral structures
Vaginal fornices
The posterior bladder wall can be palpated via the
Anterior fornix
The oviduct, ureters, and ovaries can be palpated via the
Lateral fornices
Can be used to palpate the uterus and access the rectouterine pouch (Pouch of Douglas)
Posterior Fornix
The posterior fornix is covered in part by
Visceral Peritoneum
The vagina opens externally into the
Vestibule of the vagina
Pear shaped, hollow muscular organ consisting of a fundus, body, and cervix
Uterus
The uterus receives the intrauterine openings of the uterine tubes between the
Fundus and Body
Enters the anterior wall of the vagina and is open with the uterus
Cervix
The anatomical position of the uterus within the vagina with respect to the angle at which its cervical portion enters is described as being
Anteverted
The anatomical position of the uterus with respect to the angle between the cervix and the body of the uterus is described as being
Anteflexed
This position reduces the likelihood of
Uterine prolapse