(Netter Basic Science) Frank H. Netter - Atlas of Human Anatomy-Elsevier (2018)

Muscle Tables
MUSCLE
MUSCLE
GROUP
PROXIMAL
ATTACHMENT (ORIGIN)
Bulbospongiosus Perineal Male: median raphe, bulb
of penis, perineal body
Female: perineal body
Coccygeus Pelvic floor Ischial spine,
sacrospinous ligament
Compressor
urethrae (female
only)
Cremaster
Deep transverse
perineal
External anal
sphincter
DISTAL
ATTACHMENT
(INSERTION) INNERVATION BLOOD SUPPLY MAIN ACTIONS
Male: perineal
membrane, corpus
cavernosum, bulb
of penis
Female: dorsum of
clitoris, inferior
fascia of urogenital
diaphragm, bulb of
vestibule, pubic
arch
Inferior sacrum,
coccyx
Perineal Ischiopubic ramus Anterior aspect of
urethra
Spermatic
cord
Perineal
Perineal
Lower edge of internal
abdominal oblique and
middle of inguinal
ligament
Inner surface of inferior
ischial rami
Tip of coccyx,
anococcygeal ligament
Iliacus Anterior thigh Superior 2/3 of iliac
fossa, ala of sacrum,
anterior sacroiliac
ligaments
Ischiocavernosus Perineal Inferior internal surface of
ischiopubic ramus,
ischial tuberosity
Levator ani
(iliococcygeus,
pubococcygeus,
and puboanalis)
Pelvic floor
Body of pubis, tendinous
arch of obturator
fascia, ischial spine
Obturator internus Gluteal region Pelvic surface of
obturator membrane
and surrounding bone
Piriformis Gluteal region Anterior surface of sacral
segments 2–4,
sacrotuberous
ligament
Pubic tubercle, crest
of pubis
Male: medial
tendinous raphe
and perineal body
Female: sides of
vagina
Deeper fibers
surround anal canal,
attach posteriorly
to coccyx and
anteriorly to central
point of perineum
Lesser trochanter of
femur and body
inferior to it, to
psoas major tendon
Crus of penis or
clitoris
Perineal body, coccyx,
anococcygeal
raphe, walls of
prostate gland or
vagina, rectum,
anal canal
Medial surface of
greater trochanter
of femur
Superior border of
greater trochanter
of femur
Deep branch of
perineal nerve
from pudendal
nerve
Anterior rami of
lower sacral
nerves
Perineal branches
of pudendal
nerve
Genital branch of
genitofemoral
nerve
Perineal branches
of pudendal
nerve
Perineal and
inferior rectal
branches of
pudendal nerve
Femoral nerve
Deep branch of
perineal nerve
from pudendal
nerve
Anterior rami of
lower sacral
nerves, perineal
nerve
Nerve to obturator
internus muscle
Anterior rami of L5,
S1, S2
Internal pudendal artery
and its branch
(perineal artery)
Inferior gluteal artery
Perineal branch of
internal pudendal
artery
Cremasteric branch of
inferior epigastric
artery
Perineal branch of
internal pudendal
artery
Inferior rectal and
transverse perineal
artery
Iliac branches of
iliolumbar artery
Internal pudendal artery
and its branch
(perineal artery)
Inferior gluteal artery,
internal pudendal
artery and its
branches (inferior
rectal and perineal
arteries)
Internal pudendal and
obturator arteries
Superior and inferior
gluteal arteries,
internal pudendal
artery
Male: compresses
bulb of penis,
forces blood into
body of penis
during erection,
removes urine
from urethra and
semen during
ejaculation
Female: constricts
vaginal orifice,
assists in
expressing
secretions of
greater vestibular
gland, forces
blood into body
of clitoris
Supports pelvic
viscera, draws
coccyx forward
Sphincter of urethra
Retracts testicle
Stabilizes perineal
body, supports
prostate gland/
vagina
Closes anal orifice
Flexes thigh at hips
and stabilizes hip
joint, acts with
psoas major
Forces blood into
body of penis
and clitoris
during erection
Supports pelvic
viscera, raises
pelvic floor
Laterally rotates
extended thigh,
abducts flexed
thigh at hip
Laterally rotates
extended thigh,
abducts flexed
thigh at hip
Variations in spinal nerve contributions to the innervation of muscles, their arterial supply, their attachments, and their actions are common
themes in human anatomy. Therefore, expect differences between texts and realize that anatomical variation is normal.
Table 6.3
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Muscle Tables