Renal 2 Flashcards
(15 cards)
What are the parts of the male urethra?
- Preprostatic
- Prostatic (widest & most dilatable part)
- Membranous (narrowest part)
- Penile (Spongy)
The prostatic urethra is the widest and most dilatable part, while the membranous urethra is the narrowest part.
What is the narrowest point of the male urethra?
The external urethral meatus
The external urethral meatus is the point where the urethra opens to the outside of the body.
What is the function of the internal urethral sphincter?
Prevents the retrograde flow of ejaculate into the bladder
The internal urethral sphincter surrounds the bladder neck and is important for maintaining urinary continence.
What type of muscle fibers form the external urethral sphincter?
Striated muscle fibers
The external urethral sphincter is responsible for the voluntary control of urination.
How does the female urethra compare to the male urethra?
Wider & more dilatable
The female urethra begins at the internal urethral meatus and ends at the external urethral meatus.
Where does the prostate lie in relation to the bladder?
Below the neck of the bladder
The prostate is a firm fibro-muscular glandular organ with various surfaces and relations.
What are the two types of capsules surrounding the prostate?
- Outer false capsule (Prostatic sheath)
- Inner true capsule
The outer capsule is avascular posteriorly and connects to the pubis, while the inner capsule is a fibromuscular sheath.
What are the lobes of the prostate?
- Anterior lobe
- Posterior lobe
- Median lobe
- Right & Left lateral lobes
These lobes have distinct anatomical and functional characteristics.
What is the primary blood supply of the urinary bladder?
- Inferior vesical artery
- Middle rectal artery
- Internal pudendal arteries
These arteries provide the necessary blood flow to the bladder.
What separates the posterior surface of the male urinary bladder from the rectum?
Rectovesical pouch
The rectovesical pouch is a peritoneal recess that plays a role in the anatomy of the male pelvis.
What ligaments are classified as true ligaments of the bladder?
- Median umbilical ligament
- Puboprostatic ligaments (Pubo-vesical)
- Posterior ligament
- Lateral ligament
True ligaments are involved in supporting the bladder’s position.
What is the trigone of the bladder?
Triangular area on the inner aspect of the posterior bladder wall
The trigone is defined by the ureteric orifices and the internal urethral meatus.
What is the venous drainage of the urinary bladder?
Internal iliac veins
Proper venous drainage is crucial for maintaining bladder health and function.
Fill in the blank: The female urethra begins at the _______ and ends at the external urethral meatus.
internal urethral meatus
This anatomical detail is important for understanding female urinary anatomy.
True or False: The internal urethral sphincter in females is stronger than in males.
False
The internal urethral sphincter in females is weaker than that of males.
