A&P Urinary System Vocab

glomerulus

small network of capillaries encased in the upper end of a nephron; where the filtration of blood takes place

Hilum

entrance to renal sinus which blood vessels, nerves, lymphatic vessels, and the ureter pass through

urethra

tube that conveys urine outside the body

urinary bladder

serves as a urine reservoir

detrusor muscle

interlaced muscle which forms the bladder wall

Trigone

triangular internal floor of the bladder which has an opening at each of the 3 corners

Bowman's capsule

cup-shaped structure of the nephron of a kidney which encloses the glomerulus and which filtration takes place

afferent arteriole

the small artery that carries blood toward the capillaries of the glomerulus

efferent arteriole

the small artery that carries blood away from the capillaries of the glomerulus

ureters

The tubes that carry urine from the kidneys to the bladder.

urine

substance secreted from body; made up of 95% water, urea, uric acid, & trace amounts of amino acids & electrolytes

Glomerular Filtration

1st step of urine formation which contains water & various substances dissolving and filtered out of blood between Glomerulus & Bowman’s Capsule

Filtration Pressure

net pressure acting to force substances out of the glomerulus

Ureter

What does the renal pelvis drain into?

Renal cortex

What region of the kidney is mainly composed of blood capillaries?

Bowman’s capsule

What part of the nephron that is most closely related to the glomerulus?

Urethra

What structure carries urine from the bladder to the outside of the body?

Metanephridium

Which structure is not part of the urinary system?

Renal tubules

Reabsorption and concentration of substances by the kidney occur in what structure?

Urinary bladder

In the urinary system what structure stores urine?

Transitional

What type of epithelium lines your bladder?

Micturition

The elimination of urine is _______?

Protein

In the kidneys blood doesn’t lose much _____?

Glomerular filtration, tubular reabsorption, tubular secretion

Name the 3 processes in urine formation?

Peritubular capillary network

Once the blood comes out of the efferent arteriole, what blood vessel does it go into next?

2 gallons

Between both kidneys how much filtrate is produced in an hour?

150 ml

What’s the average amount of urine excreted from the bladder at one time?

Blood

Which of these substances will you find in filtrate that wouldn’t be found in urine?

30 cc

Urine output less than how many cc’s an hour is a sign of kidney failure?

peristalsis

Which of these is the main force that causes urine to move through the ureters to the bladder?

Potassium

Which substance enters the urine via tubular secretion?

**Uvula**

**Which of these is not part of the urinary system?**