This document provides a summary of the gross anatomy of the male and female external genitalia. It describes the structures of the scrotum, penis, testes, and male internal genitalia. It then discusses the female external genitalia including the labia majora, labia minora, clitoris, vestibule, and bulbs of the vestibule. The blood supply, nerve supply, and lymphatic drainage are also summarized for the male and female external genitalia. Finally, the gross anatomy of the ovary including its location, structure, blood supply, nerve supply, and lymphatic drainage is described.

1. GROSS ANATOMY OF THE
OVARY,FEMALE EXTERNAL
GENITALIA AND MALE EXTERNAL
GENITALIA
BY
DR KELECHI DURUH
DEPARTMENT OF ANATOMY
UNEC
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2. MALE EXTERNAL GENITALIA
• Includes scrotum and the penis
SCROTUM
• Scrotum is an outpouching of the lower
abdominal wall
• Sparse hair, no fat
• Contains the testes , it’s coverings, epididymis
and spermatic cords
• Has thin muscular layer , dartos muscle
• Contracted when cold, causing wrinkling
• Spermatic cord has cremaster muscle
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4.  Blood supply
Superficial and deep external pudendal vessels
Perineal vessels
 Nerve supply
 Anterior one third by ilioinguinal nerve (L1) and
the genital branch of the genitofemoral(L1)
 Posterior two third by scrotal branch of perineal
nerve(S3) supported by perineal branch of
posterior femoral cutaneous nerve(S2)
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5. PENIS
• Has a root , body and cap
• Bulb of the root attached to the inferior
surface of perineal membrane
• Crus attached to the margin of the ischiopubic
ramus on each side
• Bulb continues forward as corpus spongiosum,
rounding up at the tip as glans penis
• Glans penis overlaps the distal ends of the
corpora carvernosa
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6. 6

7. • The crus extends on each side as corpus
carvenosum
• Ventral to the root, the corpora carvenosa and
the corpus spongiosum are bound together to
form the body
• Penile urethra runs through the length of the
corpus spongiosum
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8. 8

9. • Each corpus is bound by a tough fibrous sheath
,the tunica albuginea
• Tunica albuginea of spongiosum enlarges
distally to sheath the glans
• The corpora in their fibrous sheath are
encircled by the deep fascia of the penis
• The deep fascia is attached to the front of the
pubic symphysis by the suspensary ligament of
the penis
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10. • The midline deep dorsal vein , with a dorsal
artery on each side and more laterally a dorsal
nerve lies deep in the deep fascia
• The skin is hairless and prolonged forwards to
form prepuce
• Beneath the skin ,is the superficial fascia
• In the midline is the superficial dorsal vein
accompanied by lymphatics
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11. Blood supply
• Three pairs from internal pudendal
 Artery to the bulb. Supplies corpus
spongiosum and the glans
 Deep artery of the penis. Supplies the
corpus carvenosum.
 The dorsal artery of the penis. Supplies
the skin , fascia and glans
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12. • The skin also receives branches from
superficial external pudendal
• Anastomosis between artery of the bulb and
dorsal artery
• Venous return by veins accompanying arteries
• Lymphatic drainage of penile skin is to
superficial inguinal nodes, corpora and glans
to deep inguinal nodes
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13. Nerve supply
• Pudendal ,mainly S2 dermatome.
• Small portion of proximal dorsum supplied by
L1—ilioinguinal nerve
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14. OVARY
• Ovary is a paired pelvic organ.
• Ovoid shaped
• About 3cm long,2cm wide and 1cm thick
• Smaller before menarche and after
menopause
• Attached to the cornu of the uterus by
ligament of the ovary
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15. 15

16. • Anterior border attached to the posterior leaf
of the broad ligament by mesovarum
• Rest of surface covered by cuboidal
epithelium
• Lateral surface lies in the angle between the
internal and external iliac vessels
• Medial surface is mainly related to the uterine
tube
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17. Blood supply to the ovary
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18. Blood supply
• Ovarian artery,branch of abdominal aorta
• Ovarian veins form a plexus in the
mesovarium and the suspensary
ligament(pampiniform plexus)
• The plexus drain into a pair of ovarian veins
that accompany the ovarian artery
• Right ovarian vein joins the IVC
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19. • Left ovarian vein joins the left renal vein
• Lymphatics of the ovary drain to para-aortic
nodes along L2
• Some lymphatic drainage through round
ligament to inguinal nodes and canal
• Few lymphatics pass to opposite ovary across
the fundus of uterus
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20. NERVE SUPPLY
• Sympathetic fibers from aortic
plexus,accompanied by sensory fibers
• Parasympathetic from hypogastric plexus via
uterine artery
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21. FEMALE EXTERNAL
GENITALIA
• Mons pubis, labia majora, labia minora, clitoris,
vestibule, bulbs of the vestibule and the greater
vestibular glands
• Also known as vulva
• Labia majoratwo folds of hairy skin with
underlying fat pads.
Joined anteriorly as anterior commissure
Linked by a connecting skin posteriorly , posterior
commissure
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22. FEMALE EXTERNAL GENITALIA
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23. • Labia minoratwo folds hairless skin located
medial to the majora.
 Forms the boundary of the vestibule
Anteriorly, it splits into upper(lateral)part
which forms the prepuce and a
lower(medial)part which form the frenulum of
the clitoris
Posteriorly,they are united by a small skin fold
,the frenulum of the labia
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24. • Clitoris lies at the anterior ends of the labia
minora
Homologous with the penis
Does not transmit urethra
Formed by two miniature corpora cavernosa
and anterior ends of the bulbs of the
vestibule.
It’s tip is the glans
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25. • Vestibule bounded by the labia minora.
Contains the external urethral meatus,the
vaginal orifice, the ducts of the greater
vestibular glands(bartolin),lesser vestibular
glands,paraurethral glands(skene) and hymen
Bulb of the vestibule a paired mass of
erectile tissue on each of the vaginal orifice.
Covered by bulbospongiosus muscle
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26. Blood supply
From internal pudendal
• Posterior labia branch from perineal artery
• Arteries of the bulb
• Deep arteries of the clitoris
• Dorsal arteries of the clitoris
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27. Superficial external pudendal
• Branches to the skin of mons pubis and labia
majora
Veins accompany the arteries
Lymphatic drainage
• Labia majora,mons pubissuperficial
inguinalexternal iliac nodeslumbar nodes
• Clitoris,labia minoradeep inguinalexternal
iliac nodeslumbar nodes
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28. THANK YOU