Ch 33- urinary system

What is the urinary system of the body responsible?

Production and elimination of urine

What are the four organs that constitute the urinary system?

1. Kidney

2. Ureter

3. Urinary bladder

4. Urethra

What happens in the kidney?

Urine production

What is the ureter?

Tube conveying urine from kidney to the bladder

What is the function of the urinary bladder?

Storage of urine

What is the urethra?

Tube conveys urine from the urinary bladder to the outside of the body

What shape is the kidney?

Bean shaped

Where is the kidney located ?

Posterior portion of the abdominal cavity on either side of vertebral column

How many kidneys are there? What are they?

2: right and left kidneys

The right kidney is usually_______ to the left kidney bc?

Slightly lower bc of the mass of the liver above it

Is the lateral border convex or concave?

Convex

Is the medial border convex or concave?

Concave

Where does the medial border present? What is this location called?

A point in which all the structures that leave or enter the kidney Pass; HILUS

What does does the hilus mark?

The entrance into a cavity called RENAL SINUS

What are the upper and lower end of kidney referred to as?

Superior pole and inferior pole

What Lies on the superior pole?

Adrenal or suprarenal gland

What are the suprarenal glands supplied by?

Suprarenal arteries

Where does the cortex lie internally? Where does the medulla lie?

Periphery ; medulla lies internal to the cortex

What does this medulla contain?

Medullary pyramids

What supplies the kidneys?

Renal arteries

Which renal artery is longer?

Right renal artery is longer than the left

What drains the kidney?

Renal veins

Which renal vein is longer?

Left renal vein

What does the left renal vein receive?

Tributaries from the : left suprarenal vein, left gonadal vein, and left ascending lumbar vein GAS

What is the ureter?

Muscular tube that conveys urine from the renal pelvis to the urinary bladder

How many ureters are there.? How long?

2 ureters- one draining each kidney; approx. 25 cm in length

Where do the ureters descend? Where do they then cross? Where do they then turn?

1. Along the posterior abdominal wall

2. Cross the bifurcation of the common iliac artery at the pelvic brim

3. Turn medically toward the bladder

Where does the ureter course?

Through the muscular wall of the urinary bladder and opens into the cavity of the urinary bladder

How many constriction of the ureter? Where are they located?

3 constriction located at the ureteropelvic junction, pelvic brim, and entrance to bladder

Arterial supply from the ureter is what? Where does it arise from?

Longitudinal; arises from the renal, gonadal, common iliac, and internal iliac arteries

What is the urinary bladder ?

A musculomembranous sac that acts as a reservoir for urine

Where is the urinary bladder located ?

In the pelvis. Resting upon the pubis

What is the the urinary bladder muscular wall divided into?

Trigone and detrusor

What is the trigone?

The part located between 2 openings of ureter and internal urethral orifice

What is the detrusor?

Remainder of urinary bladder

What is the urinary bladder drained by?

Urethra

What is the urethra?

Fibromuscular tube that extends from the internal urethral orifice to the outside of the body

Blood supply to the bladder is primarily from?

Superior and inferior vesicular arteries, which are indirect branches off the internal iliac artery