what organs are on the left side of body

The main organs on the left side of the body include parts of the chest, abdomen, and pelvis, with some slight “lean” of midline organs toward the left.

If you have sudden or severe chest, abdominal, or back pain, trouble breathing, dizziness, or fainting, seek emergency medical care immediately.

Major left-side organs

• Heart (mostly left of center)
  Sits in the middle of the chest but tilts so that much of it lies behind the left breastbone and ribs, especially the left ventricle.

• Left lung
  Has two lobes (upper and lower) and fills most of the left side of the chest, wrapping around the heart.

• Left diaphragm dome
  The left half of the diaphragm muscle sits under the left lung and separates chest from abdomen, helping with breathing.

Upper left abdomen

• Stomach (mainly left side)
  Located high in the upper left abdomen under the ribs; stores food and starts digestion with acid and enzymes.

• Spleen
  Sits high under the left ribs near the back; filters blood, helps fight infection, and recycles old red blood cells.

• Pancreas (body and tail)
  Runs horizontally across the upper abdomen; its body and tail extend toward the left side behind the stomach and near the spleen.

• Left lobe/tip of the liver
  Most liver is on the right, but a portion extends into the upper left abdomen above the stomach.

Mid and lower left abdomen

• Left kidney
  Lies toward the back of the upper/mid abdomen, just below the left rib cage; filters blood and makes urine.

• Left adrenal gland
  Small hormone‑producing gland that sits like a “cap” on top of the left kidney.

• Left ureter
  A narrow tube carrying urine from the left kidney down to the bladder, running along the left side of the abdomen and pelvis.

• Left colon (descending and part of sigmoid colon)
  The left portion of the large intestine runs down the left side of the abdomen, then curves toward the pelvis before joining the rectum.

Pelvis and reproductive organs (left side)

• In females

  • Left ovary
  • Left fallopian tube
    These lie low in the pelvis on the left, near the uterus.

• In males

  • Left testicle
    Located in the left side of the scrotum, connected via the spermatic cord into the lower abdomen.

Other left-sided structures

• Left side of the brain (left hemisphere)
  Located in the left half of the skull; in most people, strongly involved in language and analytic functions.

• Left eye and left ear
  Sensory organs on the left side of the head.

• Left side muscles and bones
  Includes left ribs, left side of the spine, left hip, and the muscles of the left chest, abdomen, and back that can also be sources of pain.

Quick health note

Because so many organs cluster on the left, left‑sided pain can come from many causes, some minor (muscle strain, gas, constipation) and some serious (heart attack, spleen problems, blood clots, kidney stones). New, severe, or unexplained pain—especially with shortness of breath, sweating, nausea, fever, or dizziness—should be evaluated urgently. Information gathered from public forums or data available on the internet and portrayed here.