Urinary Bladder Flashcards by Iseoluwa Ojo

THE URINARY BLADDER
•Is a hollow viscus organ with strong muscular walls
T/F

THE URINARY BLADDER
•Is a hollow viscus organ with strong muscular walls
•It is highly distensible
•It is a temporary reservoir for urine
•It varies in size, shape, location and relations according to its content and the state of neighboring viscera

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THE URINARY BLADDER

•It is semi distensible
T/F

highly distensible

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THE URINARY BLADDER

•It is a (temporary or permanent ?) reservoir for _____

Temporary; urine

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The urinary bladder

When empty, the adult urinary bladder lies in the ______, (anterior or posterior ?) and slightly (superior or inferior?) to the pubic bones
It is separated from these bones by the potential ____ space and lies (superior or inferior?) to the peritoneum where it rests on the pelvic floor

lesser pelvis

Posterior

Inferior

retropubic

Inferior

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The urinary bladder is relatively free except the ____ which is held firmly by the ____ ligaments in males and the _____ ligament in females

neck

puboprostatic

pubovesical

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In infants and children, the urinary bladder is in the ______ (even or except ?) when empty

It enters the greater pelvis by the age of __ yrs
Lies in the lesser pelvis after ____

abdomen

Even

puberty

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In adults, as the urinary bladder fills, it (ascends or descends?) and enters the _____

Ascends

Greater pelvis

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A full bladder may ascend to the level of the _______

umbilicus

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When empty, the bladder is somewhat _____ in shape

tetrahedral

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Urinary bladder

Has 4 surfaces:
______ surface
2 _____ surfaces
________ surface

Superior

inferolateral

Posterior

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Parts of the urinary bladder

____
____
_____
____ and
____

Apex

Body
Fundus

Neck

Uvula

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Parts of the urinary bladder

•Apex
●_______ end
●Points towards the (superior or inferior?) edge of the _____

•The body
●Lies between the ______ and ______

•Fundus/Base
●Formed by ____ wall which is somewhat (concave or convex?)

Superior; pubic symphysis

apex and the fundus

posterior

Convex

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The fundus is related to:
●_____ in males
●(Anterior or Posterior?) wall of _____ in females

•Neck of bladder
●Where ______ and _____ surfaces meet

Rectum

Anterior; vagina

fundus and inferolateral

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The uvula

Is a slight _____ of the ____ of the bladder
Usually more prominent in ______ people

projection

trigone

older men

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Trigone of bladder

•The _______ and the _____ are at the angles of the trigone of the bladder

ureteric orifices

internal urethral orifice

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The ureters pass ______ through the bladder wall in an (superior or inferior?) (medial or lateral?) direction

obliquely

inferior
Medial

An increase in bladder pressure presses the walls of the ____ together

Therefore preventing the pressure in the bladder from forcing ___ up the ureters

ureter

urine

Muscle fibers of the urinary bladder

The bladder is enveloped by ________ fascia

loose CT- vesical

The wall of the bladder is composed chiefly of _____ muscle

detrusor

Urinary bladder

Towards the neck, the muscle fibers form the (voluntary or involuntary?) ______ sphincter

In males, the muscle fibers in the neck are continuous with the fibromuscular tissue of the —————
In females, these muscle fibers are continuous with muscle fibers in the wall of the _____

Involuntary

internal

prostate

urethra

The bladder bed is formed on:

–Each side by the:
•______ bones
•_________
•_________

–Posteriorly by the
•______ or ____

Pubic

Obturator internus

Levator ani

Rectum or vagina

The _______ pouch of peritoneum between the bladder and uterus, is empty except when the uterus is inclined (anteriorly or posteriorly ?) (___verted); in this case it may contain a __________

vesicouterine

posteriorly; retroverted

loop of intestine

Blood supply of the bladder
●Arterial supply- Branches of __________ artery

➢_________ artery

➢_______ (males);

➢_______ arteries (females)

➢__________ and _____ arteries

internal iliac

Superior vesical

Inferior vesical

Vagina

Obturator and inferior gluteal

Superior vesical artery
•_________ surface

➢Inferior vesical (males);
•_____ and ____

➢Vagina arteries (females)
•______,_____, and __________ parts

Anterosuperior

Neck and fundus

neck, fundus and posteroinferior

Venous drainage •In males, the ____ venous plexus combines with the _____ venous plexus and envelopes the : ●Fundus of the bladder and prostrate ●Seminal vesicles ●Ductus deferens ●Inferior ends of the ureters

vesical prostatic

The vesical venous plexus mainly drains through the ______ veins into the _______ veins; However, it may drain through the ____ veins into the _______ venous plexuses

inferior vesical internal iliac sacral internal vertebral

In females, the vesical venous plexus envelops the ____ part of the urethra and the ____ of the bladder and receives blood from the ____ vein of the _____ and communicates with the ___________ venous plexus

pelvic neck dorsal; clitoris vaginal or uterovaginal

Lymphatic drainage of bladder •In both sexes, lymphatic vessels from the: ●Superior surface of the bladder pass to the _________ lymph nodes ●Fundus of bladder pass to the ______ lymph nodes ●Neck of bladder pass into the ______ or _______ lymph nodes

external iliac internal iliac sacral or common iliac

Innervation of bladder •Parasympathetic fibers to the bladder are derived from the _______ nerves •They are _____ to the detrusor muscle and _____ to the internal sphincter •When the visceral afferent fibers are stimulated by ____, the bladder ____ reflexively the internal sphincter ______ and urine flows into the urethra

pelvic splanchnic motor inhibitory stretching Contracts relaxes

Sympathetic fibers of the bladder * Sympathetic fibers to the bladder are derived from ____ through ___ nerves. * The nerves supplying the bladder form the vesical nerve plexus which consists of both sympathetic and parasympathetic fibers * This plexus is continuous with the ___________ plexus

T11; L2 inferior hypogastric

The urethra is a tube that carries the urine from the _____ to the exterior

bladder

Male urethra •Is a muscular tube •Measures about _____ cm long •Conveys urine from the ________ of the urinary bladder to the ________ at the tip of the ________

18 – 20 internal urethral orifice external urethral orifice glans penis

The urethra also provides exit for _____ besides urine

semen

Male urethra •It is divided into 4 parts for descriptive purposes: 1. _____ urethra 2. ______ urethra 3. ______ urethra 4. _____ urethra

Preprostatic Prostatic Membranous Spongy

Female urethra •Measures ___ in length and ____ in diameter •Extends from the _______ of the urinary bladder to the _____ in the _____ of the ____

4cm 6 mm internal urethral orifice external urethral orifice vestibule of the vagina

Female urethra Lies (anterior or posterior?) to the orifice of the vagina It passes with the vagina through the pelvic ______,_______ sphincter and ______

Anterior diaphragm external urethral perineal membrane

Blood supply of the male urethra ●Arterial supply –Proximal 2 parts→ Prostatic branches of _______ and ______ arteries –Distal 2 parts → branches of _________ artery •Lymphatic drainage –Proximal 3 parts →______ lymph nodes –Distal part →_______ lymph nodes

Inferior vesical and middle rectal internal pudendal internal iliac deep inguinal

Blood supply of the female urethra •Arterial supply→______ and ____ artery •Venous drainage→ veins accompany the arteries •Lymphatic drainage →_____ and _____; few drain into ____ lymph nodes

internal pudendal and vagina Sacral and internal iliac inguinal