Midterm | Ureters, UB, Urethra Flashcards
Main function of the ureters
Transports urine from the renal pelvis of one kidney to the urinary bladder
LENGTH AND DIAMETER OF URETERS
LENGTH: 25-30 cm (10-12 in.)
DIAMETER: 1 mm to 10 mm
SHAPE OF THE URETERS
THICK-WALLED NARROW TUBE
LOCATION OF URETERS
RETROPERITONEAL
ANTERIOR TO PSOAS MUSCLE
VALVES OF URETERS
NO ANATOMICAL VALVE
NORMAL CONSTRICTIONS OF THE URETERS
- URETROPELVIC JUNCTION
- BRIM OF PELVIS
- URETEROVESICAL JUNCTION
Constriction of the ureter at which the renal pelvis funnels down into the small ureter
URETROPELVIC JUNCTION
Constriction of the ureter where the iliac blood vessels cross over the ureters
PELVIC BRIM (BRIM OF PELVIS)
Constriction of the ureter where the ureter joins the bladder
URETEROVESICAL JUNCTION
LAYERS OF THE URETERS
MUCOSA
MUSCULARIS
ADVENTITIA
Layer of the ureter close to the lumen
Mucosa
URETER MUSCOSA IS A MUCOUS MEMBRANE WITH
- TRANSITIONAL EPITHELIUM
- LAMINA PROPIA of areolar connective tissue with considerable collagen, elastic fibers, and lymphatic tissue
Steetches to accomodate the variable amount of fluid
TRANSITIONAL EPITHELIUM
INTERMEDIATE COAT OF THE URETERS
MUSCULARIS
MAIN FUNCTION OF THE MUSCULARIS OF THE URETERS
PERISTALSIS
MUSCULARIS OF THE URETERS IS COMPOSED OF
- INNER LONGITUDINAL SMOOTH MUSCLE
- OUTER CIRCULAR SMOOTH MUSCLE
- DISTAL THIRD CONTAINS
3. ADDITIONAL OUTER LONGITUDINAL
SUPERFICIAL COAT OF THE URETERS
ADVENTITA
ADVENTITA is a layer of (1) containing (2), (3), and (4)
- areolar connective tissue
- blood vessels
- lymphatic vessels
- nerves
Storage organ that temporarily stores urine until convenient to discharge from body
URINARY BLADDER
AVERAGE CAPACITY OF THE URINARY BLADDER
300-500mL (Bontrager)
700-800mL (Tortora)
SHAPE OF URINARY BLADDER
PEAR-SHAPED: distended
TETRAHEDRAL: empty
LOCATION OF URINARY BLADDER
In the pelvic cavity
Posterior to pubic symphysis
How do you locate the pubic smphysis without palpation?
Locate the midline of the anterior superior iliac spine (ASIS)
LOCATION OF URINARY BLADDER (MALE)
ANTERIOR TO RECTUM