External genitalia of males and females

Question 1

What is glans penis

Answer 1

Rounded head/tip of penis

Question 2

What is corona of glans

Answer 2

Rounded border under glans penis

Question 3

What is the frenulum which connects foreskin and shaft of penis

Answer 3

Frenulum of prepuce

Question 4

What is the line behind the penis called which spans down to anus

Answer 4

Penile raphe

Question 5

What is the penile raphe called once it is by the scrotum

Answer 5

Scrotal raphe

Question 6

What are the different parts of the penis called

Answer 6

Root of penis –> dorsal of penis –> body of penis

Question 7

What are the different parts of the clitoris from top to bottom

Answer 7

Prepuce
Glans
Frenulum

The glans of the clitoris is covered by prepuce.

Question 8

What is the vestibule of the female external genitalia

Answer 8

Skin that surrounds the clitoris and vagina

Question 9

What is the frenulum of labia minora

Answer 9

Under the vaginal orifice

Question 10

What are the greater vestibular glands and where are they found

Answer 10

Each side of the vestibule, postolateral to the vaginal orifice. They secrete mucus into the vestibule during sexual arousal

Question 11

What laminae does the labian minora form anteriorly

Answer 11

Frenulum of clitoris

Prepuce of clitoris

Question 12

Where are the labia minora connected posteriorly

Answer 12

Via the frenulum of the labia minora

Question 13

What is arterial supply to the vulva from

Answer 13

External and internal pudendal arteries

Internal pudendal supplies most of the skink external genitalia and perineal muscles

Question 14

What are labial arteries branches of

Answer 14

Internal pudendal artery

Question 15

What are labial veins tributaries of

Answer 15

Internal pudendal veins

Question 16

What is the mons pubis

Answer 16

Rounded fatty eminence anterior to the pubic symphysis , pubic tubercle and superior pubic rami

Question 17

What is the lymph drainage of the vulva

Answer 17

superficial inguinal lymph nodes

Question 18

What is the lymph drainage of the glans clitoris and anterior labia minora

Answer 18

Deep inguinal nodes or internal iliac nodes

Question 19

What is anterior aspect of vulva innervated by

Answer 19

Anterior labial nerves

Question 20

What is the posterior aspect of vulva innervated by

Answer 20

Perineal branch of the posterior cutaneous nerve of the thigh laterally and the pudendal nerve centrally

Question 21

What nerve is the main nerve of the perineum

Answer 21

Pudendal nerve

Question 22

Branches of the pudendal nerve and what they supply in the female

Answer 22

POsterior labial nerves: labia

Deep and muscular branches: orifice of vagina and superficial perineal muscles

Dorsal nerve of clitoris: deep perineal muscles and clitoral sensation

Question 23

Superficial perineal muscles of females

Answer 23

Superficial transverse perineal
ISchiocavernosus
Bulbospongiosus

Question 24

How is pain relieved during childbirth

How is pain abolished from anterior part of the perineum

Answer 24

PUdendal nerve block anaesthesia (does nit abolish sensation from anterior part of the perineum that is innervated by the ilii-inguinal nerve)

To abolish pain from anterior part of perineum- ilii-inguinal nerve block performed

Question 25

Arterial supply of the intermediate and stingy parts of the urethra

Answer 25

Branches of the dorsal artery of the penis

Question 26

Lymph vessels from intermediate part of the urethra drain into?

Answer 26

Internal iliac lymph nodes

Question 27

What is anterior aspect of the scrotum supplied by

Answer 27

Anterior scrotal arteries | Terminal branches of external pudendal arteries

Question 28

What is posterior aspect of the scrotum supplied by

Answer 28

Posterior scrotal arteries | Terminal branches of internal pudendal artery

Question 29

What do the veins that drain the scrotum drain into

Answer 29

External pudendal veins

Question 30

What do lymph vessels from the scrotum drain into

Answer 30

Superficial inguinal lymph nodes

Question 31

Innervation of scrotum

Answer 31

Anterior- anterior scrotal nerves POSterior- POSterior scrotal nerves

Question 32

What are the three cylindrical bodies of erectile cavernous tissue in penis What is each covered in

Answer 32

Paired corpora cavernosa Corpus spongiosum Fibrous outer covering: Tunica albuginea

Question 33

What is the suspensory ligament of the penis

Answer 33

Condensation of the deep fascia that arises from the anterior surface of the pubic symphysis and splits to form a sling that is attached to the deep fascia of the penis at the junction of its root and body

Question 34

What is the penis supplied by

Answer 34

branches of the internal pudendal arteries

Question 35

Where does blood from superficial coverings of penis drain into

Answer 35

Superficial dorsal vein

Question 36

Lymph drainage of the penis

Answer 36

Skin: superficial inguinal LN Glans and distal spongy urethra: deep inguinal and external iliac nodes Cavernous bodies and proximal spongy urethra: Internal iliac nodes

Question 37

Sensory and sympathetic innervation of penis

Answer 37

Dorsal nerve of the penis (S2-4)

Question 38

What causes an erection

Answer 38

Parasympathetic stimulation by cavernous nerves closes arteriovenous anastomoses Simultaneously, contraction of smooth muscle in fibrous trabeculae and coiled arteries is inhibited. As a result, the arteries straighten BUlbospongiosus and ischiocavernosus contract which compress veins of corpora cavernous and and impede venous return. Erection occurs as the corpora cavernosa and corpus spongiosum become engorged with blood at arterial pressure, causing erectile bodies to become turgid

Question 39

What does ejaculation result from

Answer 39

Closure of internal urethral sphincter at neck of urinary bladder Contraction of urethral muscle Contraction of bulbospongiosus muscles from pundendal nerves