25 Questions
What is the function of the renal hilum in the kidney?
The entry and exit site for vessels, nerves, lymphatics, and ureters
What are the extensions of the renal pelvis called?
Major calyces
Where is the third opening located?
At the apex of the trigone
What is the purpose of the ureters in the renal hilum?
To transport urine away from the kidney
What is the name of the muscle band that forms the internal urethral sphincter?
Detrusor muscle
What is the site where the ureters exit the kidney?
Renal hilum
What branches out of the renal pelvis?
The major calyces
What is the function of the internal urethral sphincter?
To close the urethra
What is the urethra?
A tube that carries urine out of the body
Where does the third opening lead to?
The urethra
What type of muscle is the internal urethral sphincter?
Smooth muscle
What type of muscle is the external urethral sphincter?
Skeletal muscle
Where is the external urethral sphincter located?
Where the urethra goes through the pelvic floor
What type of control does the external urethral sphincter have?
Voluntary control
What is a characteristic of the internal urethral sphincter?
It is a smooth muscle
What is the external opening of the urethra?
External urethral orifice
What type of epithelium lines the mucosa of the urethra?
Transitional epithelium
What is the location of the external urethral orifice?
Outside the body
What is the characteristic of the epithelium lining the urethra?
Transitional and adaptable
What is the purpose of the mucosal lining of the urethra?
To protect the urethra from infection
What is the name of the region that penetrates the pelvic floor and enters the penis?
Membranous urethra
Which part of the urethra is the longest?
Spongy urethra
What is the pelvic floor penetrated by?
Membranous urethra
How many regions of the urethra are mentioned in the content?
3
What is the relationship between the membranous urethra and the penis?
The membranous urethra enters the penis
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.
This quiz covers the structure and components of the kidneys and urethra, including the renal pelvis, calyces, renal hilum, and urethral openings.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
