The most vital organs are as follows.
Skin:
The skin is the largest organ in the human body.
Its main job is to maintain the body's temperature.
The skin contains sweat glands and oil glands. Oil released
by the skin releases helps keep the skin from drying out and the hair from
becoming brittle.
The skin also regularly sheds cells to maintain its
effectiveness.
Brain
The brain stores information, allows you to think and learn
and controls vital daily functions (such as digestion, heart rate and
breathing).
The brain receives impulses from nerves, which are located
throughout the body, and responds to pain and other stimulation.
Even though the brain is so important, it is also very
delicate. The brain is made of soft tissue and is protected only by the skull,
therefore head injuries can be serious.
Heart:
The heart is another vital organ. In an average lifetime,
the heart beats more than 2.5 million times.
The heart's job is to pump oxygenated blood throughout the
body and receive deoxygenated blood in return.
Kidneys:
The kidneys are located under the rib cage in the lower
back.
The kidneys filter things, such as water and salts, out of
the blood and produce urine.
The kidneys also produce an enzyme called rennin. This
enzyme plays a big role in regulating blood pressure.
Liver
The liver is in the upper abdomen, slightly to the left.
The main job of the liver is to produce bile, which it sends
to the stomach for digestion.
The liver also filters out toxins and regulates blood sugar.
Blood sugar is regulated by the liver, which converts and
stores sugar and releases it as needed into the bloodstream.
The liver is also in charge of releasing cholesterol,
breaking down fats and producing blood proteins. It is the largest internal
organ.
Pancreas
The pancreas is located behind the stomach.
The job of the pancreas is to produce enzymes necessary for
digestion and send them to the stomach.
The pancreas also regulates blood sugar by producing
insulin.
The pancreas also creates glucagon that has the opposite
effect of insulin and helps to maintain blood sugar levels.
Stomach
The stomach receives food from the esophagus and sends it
into the small intestine.
The stomach's role in digestion is to break down food and
mix it with digestive enzymes.
Small intestine
The job of the small intestine is to digest food.
It does this by using chemicals, such as enzymes.
The small intestine also absorbs nutrients and transfers
them to the blood.
The small intestine is five meters long. The food moves from
the small intestine to the large intestine with a series of muscle
contractions.
Large intestine
The large intestine is located in the abdomen and is 1.5
meters in length.
The large intestine is involved in digestion. It receives
undigested food from the small intestine.
The large intestine absorbs as much water as possible from
the food and then expels the waste and any excess fiber.
Lungs
The lungs are located in the chest and are protected by the
rib cage.
The lungs take in oxygen and they expel carbon dioxide. The
lungs deliver oxygenated blood to the heart where it is pumped throughout the
body and they receive deoxygenated blood from the heart after blood travels
throughout the body.
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The brain is the control centre of the nervous system and is
located within the skull. Its functions include muscle control and
coordination, sensory reception and integration, speech production, memory
storage, and the elaboration of thought and emotion.
The lungs
The lungs are two sponge-like, cone-shaped structures that
fill most of the chest cavity. Their essential function is to provide oxygen
from inhaled air to the bloodstream and to exhale carbon dioxide.
The liver
The liver lies on the right side of the abdominal cavity
beneath the diaphragm. Its main function is to process the contents of the
blood to ensure composition remains the same. This process involves breaking
down fats, producing urea, filtering harmful substances and maintaining a proper
level of glucose in the blood.
The bladder
The bladder is a muscular organ located in the pelvic
cavity. It stretches to store urine and contracts to release urine.
The kidneys
The kidneys are two bean-shaped organs located at the back
of the abdominal cavity, one on each side of the spinal column. Their function
is to maintain the body’s chemical balance by excreting waste products and
excess fluid in the form of urine.
The heart
The heart is a hollow, muscular organ that pumps blood
through the blood vessels by repeated, rhythmic contractions.
The stomach
The stomach is a muscular, elastic, pear-shaped bag, lying
crosswise in the abdominal cavity beneath the diaphragm. Its main purpose is
digestion of food through production of gastric juices which break down, mix
and churn the food into a thin liquid.
The intestines
The intestines are located between the stomach and the anus
and are divided into two major sections: the small intestine and the large
intestine. The function of the small intestine is to absorb most ingested food.
The large intestine is responsible for absorption of water and excretion of
solid waste material.
The brain
The brain is the control centre of the nervous system and is
located within the skull. Its functions include muscle control and
coordination, sensory reception and integration, speech production, memory
storage, and the elaboration of thought and emotion.
The lungs
The lungs are two sponge-like, cone-shaped structures that
fill most of the chest cavity. Their essential function is to provide oxygen
from inhaled air to the bloodstream and to exhale carbon dioxide.
The liver
The liver lies on the right side of the abdominal cavity
beneath the diaphragm. Its main function is to process the contents of the
blood to ensure composition remains the same. This process involves breaking
down fats, producing urea, filtering harmful substances and maintaining a proper
level of glucose in the blood.
The bladder
The bladder is a muscular organ located in the pelvic
cavity. It stretches to store urine and contracts to release urine.
The kidneys
The kidneys are two bean-shaped organs located at the back
of the abdominal cavity, one on each side of the spinal column. Their function
is to maintain the body’s chemical balance by excreting waste products and
excess fluid in the form of urine.
The heart
The heart is a hollow, muscular organ that pumps blood
through the blood vessels by repeated, rhythmic contractions.
The stomach
The stomach is a muscular, elastic, pear-shaped bag, lying
crosswise in the abdominal cavity beneath the diaphragm. Its main purpose is
digestion of food through production of gastric juices which break down, mix
and churn the food into a thin liquid.
The intestines
The intestines are located between the stomach and the anus
and are divided into two major sections: the small intestine and the large
intestine. The function of the small intestine is to absorb most ingested food.
The large intestine is responsible for absorption of water and excretion of
solid waste material.
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