Torso

The torso or trunk 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. The torso includes the thorax and theabdomen.

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 most of the organs responsible fordigestion: 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; therectum, which stores feces; the gallbladder, which stores and concentrates bile; the kidneys, which produce urine, the ureters, which pass it to the bladder for storage; and the urethra, whichexcretes urine and passes sperm through the seminal vesicles. Finally, the pelvic region houses both the male and female reproductive organs.

Major muscle groups

The torso also harbours many of the maingroups of muscles in the body, including the:

➫pectoral muscles
➬Pectoralis major muscle
➬Pectoralis minor muscle
➬subclavius
➬serratus anterior

➫abdominal muscles
➬rectusabdominis
➬internal oblique
➬external oblique
➬erector spinae
➬iliocostalis lumborum
➬longissimus
➬spinalis
➬tensor fasciae latae
➬deep gluteal muscles
➬adductor muscles ofthe hip
➬Serratus anterior
➬Psoas major

➫lateral muscle
➬latissimus dorsi

Innervation

The organs and muscles etc. are innervated by various nerves, mainly originating from thoracicvertebrae segments. For instance, the cutaneous innervation is provided by:

➫Ventral cutaneous branches
➫Lateral cutaneous branches of torso|Lateral cutaneous branches
➫Dorsal cutaneous branches

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El torso o tronco es un término anatómico de la parte central de los muchos cuerpos de los animales (incluido el de los humanos) que se extienden...