Pelvis and Perineum Session 4 Flashcards

1
Q

Name the 2 triangles the perineum divided into

A

Anterior urogenital triangle

Posterior anal triangle

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2
Q

Which bony prominences separate each of the triangles

A

Ischial tuberosities

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3
Q

What is the main action of the external anal sphincter

A

Constricts anal canal

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4
Q

What is the main action of the superficial transverse perineal

A

Support and fix perineal body

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5
Q

What is the main action of the deep transverse perineal

A

Support and fix perineal body

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6
Q

What is the function of the external urethral sphincter

A

Compress urethra to maintain urinary continence

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7
Q

What is the function of the Bulbospongious in males

A

Compress bulb of penis to expel last drops of urine and semen

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8
Q

What is the function of the Bulbospongiosus in female

A

Assists in erection of clitoris

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9
Q

What is the function of Ischiocavernous in males

A

Maintains erection of penis by compressing outflow veins

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10
Q

What is the function of the ischiocavernous in females

A

Maintains erection of clitoris by compressing outflow veins and pushing blood from root of clitoris into body

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11
Q

What strutures pierce through the pelvic diaphragm

A

Urethra

Vagina (female)

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12
Q

Describe the parts of the urethra in males

A

Prostatic
Membranous
Spongey

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13
Q

What is the widest part of the urethra

A

Prostatic

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14
Q

What is the narrowest part of the urethra

A

Membranous

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15
Q

The corpus cavernous is covered by a fascial layer called the ____

A

External fascia of Colles

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16
Q

The urethra is transmitted through the____

A

Corpus spongiosum

17
Q

The majority of the erectile tissue in the penis is in the ___

A

corpus cavernous

18
Q

Where is the internal/vesical urethral sphincter located?

A

the internal urethral orifice in the trigone of the bladder to the external urethral orifice in the middle of the vulva

19
Q

Is the internal/vesical urethral sphincter voluntary or involuntary

A

Involuntary smooth muscle

20
Q

What is the innervation of the internal/vesical urethral sphincter

A

T11-L2 (Autonomic)

S2-S4 (parasympathetic)

21
Q

Where is the external urethral sphincter found in females

A

Located distally and inferiorly to the bladder neck in women between the vaginal orifice and clitoris

22
Q

Where is the external urethral sphincter found in males

A

Inferior to the prostate

23
Q

Is the external urethral sphincter voluntary or involuntary

A

Voluntary skeletal muscle

24
Q

What is the innervation of the external urethral sphincter

A

Pudendal nerve S2-S4

25
Name the 6 contents of the vulva
``` Mons pubis Labia majora Labia minora Vestibule Bartholins gland Clitoris ```
26
The structures of the vulva are innervated by which nerve
Pudendal nerve
27
What artery supplies the structures of the vulva
Internal pudendal artery
28
What 2 structures does the vestibule contain
Terminal aspects of the vagina and urethra
29
What is the anal triangle
Area between the ischial spines and coccyx
30
What structures do the pudendal nerve, artery and veins supply
Bulb of penis Bulb of vestibule Greater vestibular gland