Torso
From Wikipedia, the free encyclopedia
Torso is an anatomical term for the central part of the many animal bodies (including that of the human) from which extend the neck and limbs. It is sometimes referred to as the trunk. The torso includes the thorax and abdomen.
[edit] Anatomy
[edit] Major organs
Most critical organs are housed within the torso. In the upper chest, the heart and lungs are protected by the rib cage, and the abdomen contains the majority of organs responsible for digestion: the liver, which respectively produces bile necessary for digestion; the large and small intestines, which extract nutrients from food; the anus, from which fecal wastes are excreted; the rectum, which stores feces; the gallbladder, which stores and concentrates bile and produces chyme; the ureters, which passes urine to the bladder; the bladder, which stores urine; and the urethra, which excretes urine and passes sperm through the seminal vesicles. Finally, the pelvic region houses both the male and female reproductive organs.
[edit] Major muscle groups
The torso also harbours many of the main muscle groups of the body, including the:
[edit] Innervation
The organs and muscles etc. are innervated by various nerves, mainly originating from thoracic vertebral segments. For instance, the cutaneous innervation is provided by:
[edit] References
Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. (July 2007)
[edit] See also
articulations of vertebral arches : ligamenta flava - supraspinous ligament (nuchal ligament) - interspinal ligament - intertransverse ligament
zygapophysial jointsacroiliac: anterior sacroiliac ligament - posterior sacroiliac ligament - interosseous sacroiliac ligament
ligaments connecting the sacrum and ischium: sacrotuberous ligament - sacrospinous ligament
sacrococcygeal symphysis: anterior sacrococcygeal ligament - posterior sacrococcygeal ligament
pubic symphysis: superior pubic ligament - inferior pubic ligamentposterior wall: quadratus lumborum - psoas major/psoas minor - iliacus
cremasterborders (anterior, posterior, inferior)
surfaces (costal, mediastinal, diaphragmatic)
fissures (oblique, horizontal)trachea (tracheal rings, carina) • bronchi • main bronchus (right, left) • lobar/secondary bronchi (eparterial bronchus) • segmental/tertiary bronchi (bronchopulmonary segment) • bronchiole • terminal bronchiole
parietal pleura (cervical, costal, mediastinal, diaphragmatic) • visceral pleura • pulmonary ligament • recesses (costomediastinal, costodiaphragmatic) • pleural cavity
Anterior
inferior pancreaticoduodenal – intestinal (jejunal, ileal, arcades, vasa recta) – ileocolic (colic, anterior cecal, posterior cecal, ileal branch, appendicular) – right colic – middle colic
left colic – sigmoid – superior rectal – marginal
Posterior
visceral: middle suprarenal – renal (inferior suprarenal, ureteral) – gonadal (testicular ♂ / ovarian ♀)
parietal: inferior phrenic (superior suprarenal) – lumbar – median sacral
terminal: common iliac (IIA, EIA)
Anterior
umbilical (superior vesical, to ductus deferens) – middle rectal – obturator (anterior branch, posterior branch) – inferior gluteal (accompanying of ischiadic nerve, crucial anastomosis)
uterine ♀ (helicine, vaginal of uterine, ovarian of uterine, tubal of uterine) – vaginal ♀ / inferior vesical ♂
internal pudendal: inferior rectal – perineal (urethral) – posterior scrotal ♂ / labial ♀ – bulb of penis ♂ / vestibule ♀ – deep artery of the penis ♂ (helicine) / clitoris ♀ – dorsal of the penis ♂ / clitoris ♀
Posterior
iliolumbar (lumbar, iliac) – lateral sacral – superior gluteal
anterior: inferior gluteal - obturator - uterine ♀ (uterine plexus ♀) - vesical (vesical plexus, prostatic plexus ♂, deep of penis ♂/clitoris ♀, posterior scrotal ♂/labial ♀) - vaginal plexus/vein ♀ - middle rectal - internal pudendal (inferior rectal, bulb of penis ♂/vestibule ♀) - rectal plexus
portal vein
ilioinguinal: anterior scrotal ♂/labial ♀
genitofemoral: femoral branch/lumboinguinal - genital branch
lateral cutaneous of thigh: patellar
obturator: anterior (cutaneous) - posterior - accessory
femoral: anterior cutaneous branches - saphenous (infrapatellar, medial crural cutaneous)tibial: medial sural cutaneous - medial calcaneal - medial plantar (common plantar digital nerves, proper plantar digital) - lateral plantar (deep branch, superficial branch, common plantar digital, proper plantar digital)
sural: lateral dorsal cutaneous - lateral calcaneal