Urinary System Anatomy Quiz

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the function of the renal hilum in the kidney?

Where the renal pelvis branches out

The entry and exit site for vessels, nerves, lymphatics, and ureters (correct)

The site of urine production

Where the minor calyces merge

What are the extensions of the renal pelvis called?

Major calyces (correct)

Nephrons

Minor calyces

Renal pyramids

Where is the third opening located?

At the midpoint of the trigone

At the apex of the trigone (correct)

At the side of the trigone

At the base of the trigone

What is the purpose of the ureters in the renal hilum?

To transport urine away from the kidney Signup and view all the answers

What is the name of the muscle band that forms the internal urethral sphincter?

Detrusor muscle Signup and view all the answers

What is the site where the ureters exit the kidney?

Renal hilum Signup and view all the answers

What branches out of the renal pelvis?

The major calyces Signup and view all the answers

What is the function of the internal urethral sphincter?

To close the urethra Signup and view all the answers

What is the urethra?

A tube that carries urine out of the body Signup and view all the answers

Where does the third opening lead to?

The urethra Signup and view all the answers

What type of muscle is the internal urethral sphincter?

Smooth muscle Signup and view all the answers

What type of muscle is the external urethral sphincter?

Skeletal muscle Signup and view all the answers

Where is the external urethral sphincter located?

Where the urethra goes through the pelvic floor Signup and view all the answers

What type of control does the external urethral sphincter have?

Voluntary control Signup and view all the answers

What is a characteristic of the internal urethral sphincter?

It is a smooth muscle Signup and view all the answers

What is the external opening of the urethra?

External urethral orifice Signup and view all the answers

What type of epithelium lines the mucosa of the urethra?

Transitional epithelium Signup and view all the answers

What is the location of the external urethral orifice?

Outside the body Signup and view all the answers

What is the characteristic of the epithelium lining the urethra?

Transitional and adaptable Signup and view all the answers

What is the purpose of the mucosal lining of the urethra?

To protect the urethra from infection Signup and view all the answers

What is the name of the region that penetrates the pelvic floor and enters the penis?

Membranous urethra Signup and view all the answers

Which part of the urethra is the longest?

Spongy urethra Signup and view all the answers

What is the pelvic floor penetrated by?

Membranous urethra Signup and view all the answers

How many regions of the urethra are mentioned in the content?

3 Signup and view all the answers

What is the relationship between the membranous urethra and the penis?

The membranous urethra enters the penis Signup and view all the answers

Study Notes

Kidney Structure

The renal pelvis branches out into two or three extensions called the major calyces, which further branch into the minor calyces.
The renal hilum is the entry and exit site for structures of the kidneys: vessels, nerves, lymphatics, and ureters.

Urethra Structure

The urethra has three openings: the opening into the urethra at the apex of the trigone, the internal urethral orifice, and the external urethral orifice.
The mucosal lining of the urethra is transitional epithelium.

Urethral Sphincters

The internal urethral sphincter is a band of smooth (involuntary) muscle that encircles the opening into the urethra.
The external urethral sphincter is a ring of skeletal (voluntary) muscle that encircles the urethra where it goes through the pelvic floor.

Urethral Regions

The membranous urethra is a short region that penetrates the pelvic floor and enters the penis.
The spongy urethra is the longest region of the urethra.