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Ureter vs. Urethra — What's the Difference?

Edited by Tayyaba Rehman — By Fiza Rafique — Updated on September 26, 2023
Ureter is a tube connecting kidneys to the bladder for urine transport. Urethra is a canal leading from the bladder, discharging urine outside the body.
Ureter vs. Urethra — What's the Difference?

Difference Between Ureter and Urethra

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Key Differences

The Ureter and Urethra are both crucial components of the urinary system but serve different functions. The Ureter's main role is to transport urine from the kidneys to the bladder.
Once urine reaches the bladder and needs to be excreted from the body, it passes through the Urethra. In contrast to the Ureter, the Urethra acts as the final conduit for urine's expulsion.
While there are two Ureters, one connected to each kidney, there's only one Urethra in the human body, leading out from the bladder.

Comparison Chart

Unction

Transports urine from kidneys to bladder
Expels urine from the bladder to outside

Number in the body

Two (one from each kidney)
One
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Relation to Gender

Same structure in males and females
Different lengths in males and females

Additional Functions (Male)

None
Also transports semen

Common Complications

Stones, obstructions
Infections, strictures

Compare with Definitions

Ureter

The duct through which urine travels from the kidneys to the bladder.
The scan revealed a stone lodged in the Ureter.

Urethra

The canal through which urine is expelled from the bladder.
The infection was traced back to the Urethra.

Ureter

Part of the urinary system responsible for urine transport.
The surgeon repaired the damaged Ureter successfully.

Urethra

Its length varies between males and females.
The female Urethra is typically shorter than its male counterpart.

Ureter

A paired structure with each connecting to a kidney.
Both Ureters seemed healthy in the ultrasound.

Urethra

Prone to infections, especially in females.
The frequent UTIs were linked to the Urethra.

Ureter

A muscular tube connecting the kidneys to the bladder.
The obstruction in the Ureter caused him severe pain.

Urethra

In males, it also serves as a conduit for semen.
The male Urethra has a dual function in reproductive and urinary systems.

Ureter

Can become blocked by stones or tumors.
The Ureter obstruction required immediate medical attention.

Urethra

Can develop strictures or narrowing.
The stricture in the Urethra was causing urinary retention.

Ureter

The ureters are tubes made of smooth muscle that propel urine from the kidneys to the urinary bladder. In a human adult, the ureters are usually 20–30 cm (8–12 in) long and around 3–4 mm (0.12–0.16 in) in diameter.

Urethra

The urethra (from Greek οὐρήθρα – ourḗthrā) is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males. In human females and other primates, the urethra connects to the urinary meatus above the vagina, whereas in marsupials, the female's urethra empties into the urogenital sinus.Females use their urethra only for urinating, but males use their urethra for both urination and ejaculation.

Ureter

The long, narrow duct that conveys urine from the kidney to the urinary bladder or cloaca.

Urethra

The canal through which urine is discharged from the bladder in most mammals and through which semen is discharged in the male.

Ureter

(anatomy) Either of the two long, narrow ducts that carry urine from the kidneys to the urinary bladder.

Urethra

(anatomy) The tube through which urine exits the body and, in penises, through which semen is ejaculated.

Ureter

The duct which conveys the urine from the kidney to the bladder or cloaca. There are two ureters, one for each kidney.

Urethra

The canal by which the urine is conducted from the bladder and discharged.

Ureter

Either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder

Urethra

Duct through which urine is discharged in most mammals and which serves as the male genital duct

Common Curiosities

Is the Urethra's length the same in males and females?

No, the male Urethra is generally longer than the female Urethra.

How does the Urethra function in the urinary system?

The Urethra serves as the canal for expelling urine from the bladder to the outside.

Can the Ureter get blocked?

Yes, Ureters can be obstructed by stones, tumors, or other conditions.

What additional function does the male Urethra have?

In males, the Urethra also transports semen.

Which is longer, the Ureter or Urethra?

In females, the Ureter is typically longer than the Urethra; in males, the Urethra is longer.

Do both the Ureter and Urethra belong to the urinary system?

Yes, both are integral parts of the urinary system.

What is a Urethra stricture?

A Urethra stricture is a narrowing or closure of the Urethra.

How many Ureters does a person have?

A person has two Ureters, one for each kidney.

Can you have an infection in both the Ureter and Urethra?

Yes, though they would typically be treated as separate issues.

Are there specific diseases associated with the Ureter?

Yes, including Ureteral stones, tumors, and congenital abnormalities.

Can damage to the Urethra affect urination?

Yes, damage or strictures in the Urethra can impede the flow of urine.

Are infections common in the Urethra?

Yes, especially in females due to the Urethra's shorter length and proximity to bacteria.

Is the Urethra involved in reproduction for males?

Yes, in males, the Urethra also serves to transport semen.

How can Ureter obstructions be treated?

Ureter obstructions can be treated with medication, surgery, or lithotripsy.

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Author Spotlight

Written by
Fiza Rafique
Fiza Rafique is a skilled content writer at AskDifference.com, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.

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