Gross Anatomy (Perineum) Flashcards
______________ is a diamond shaped structure located between the thighs
Perineum
The anatomical region that makes up the inferior-most part of the pelvic outlet is called the _________________
Perineum
The pelvic cavity is separated from the perineum by the ______________
Pelvic floor
______________ and _______________ muscles make up the pelvic floor
Levator ani muscle
Coccygeus muscle
Functions of the perineum
Micturition
Defecation
Child birth
Sexual intercourse
__________________ makes up the anterior anatomical border of the perineum
The pubic symphysis
_______________ makes up the posterior anatomical border of the perineum
Tip of the coccyx
________________ makes up the lateral anatomical borders of the perineum
Sacrotuberous ligament
Ischiopubic ramii
___________________ makes up the anatomical roof of the perineum
The pelvic floor
The anatomical base of the perineum is _________________
Fascia and skin
The anterior surface border of the perineum in females is the ____________
Mons pubis
The anterior surface border of the perineum in males is the _________________
Base of the penis
The lateral surface borders of the perineum are _______________
Medial surface of the thighs
The posterior surface border of the perineum is the _____________
Superior end of the intergluteal cleft
The perineum is divided into two triangles by an imaginary line along the _________________
Ischial tuberosities
The perineum is divided into two triangles called ________________ and ________________
Urogenital triangle
Anal triangle
Outline the anterior, posterior and lateral boundaries of the anal triangle respectively
Anterior: Imaginary line along the ischial tuberosities
Posterior: Coccyx
Lateral: Sacrotuberous ligament
Which of the below mentioned is not a content of the anal triangle?
a. Anal aperture
b. External anal sphincter
c. Urethra
d. Pudendal nerve
C
Urethra
The pudendal nerve arises from what spinal roots?
S2-S4 spinal roots
Outline the anterior, posterior and lateral boundaries of the urogenital triangle respectively
Anterior: Lower margin of the pubic symphysis
Posterior: Imaginary line along the ischial tuberosities
Lateral: Lower margin of the ischiopubic ramii
Which of the following is a content of the urogenital triangle
a. External genitalia
b. Urethra
c. Perineal body
d. A and B
e. B and C
D
A and B
External genitalia and Urethra
The perineal membrane divides the urogenital triangle into a ____________ and _____________ pouch
Deep
Superior
The space between the pelvic floor and the perineal membrane is called the _____________
Deep perineal pouch
The space between the perineal membrane and the superficial perineal fascia is called _________________
Superficial perineal pouch
An irregular fibromuscular mass located at the center point of the perineum is called _________________
Perineal body
_____________ serves as a tear-resistant body between the vagina and the external anal sphincter
The perineal body
Name 3 muscles that attach to the perineal body
Levator ani muscle
Bulbospongiosus muscle
External anal sphincter
External urethral sphincter
Superficial transverse perineal muscle
Deep transverse perineal muscle
The bed of fat covering the pubic symphysis in females is called ___________
Mons pubis
______________ consists of two fleshy folds of skin that extend from the Mons pubis to the posterior commissures
Labia majora
The labia minora lies ____________ and ___________ to the labia majora
Medially and deep
Fourchettes are skin folds formed from the fusion of ___________ and ____________
Labia majora
Labia minora
____________ is the most sensitive part of the female body
The Clitoris
__________ is located at the upper end of the labia minora and consists of bundles of nerve endings
The clitoris
The area in-between the two labia minora where the urethral and vaginal openings are found is referred to as the _________________
Vestibule
A thin membrane of soft tissue that lies between the vaginal orifice is called _____________
Hymen
