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Descrição
Mapa Mental por Andrea Maya Orozco, atualizado more than 1 year ago
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Criado por Andrea Maya Orozco
mais de 9 anos atrás
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Human digestive system
- Digestion
- Many Stages
- Oral cavity
- Digestion involves breakdown of
food into smaller
- Can be absorbed
- and assimilated
into the body
- Can be absorbed
- Saliva
- The secretion of saliva
- Helps to produce a bolus
- can be swallowed to pass
down the esophagus and
into the stomach.
- can be swallowed to pass
down the esophagus and
into the stomach.
- Helps to produce a bolus
- contains a catalytic enzyme
- called amylase
- starts to act on food in the mouth
- starts to act on food in the mouth
- called amylase
- The secretion of saliva
- Digestion involves breakdown of
food into smaller
- Oral cavity
- helped
- by the
muscular
contractions
of peristalsis
- Peristalsis is the
rhythmic contraction of
muscles
- Begins In the esophagus
- and continues along
the wall of the stomach
- and the rest of the
gastrointestinal tract
- and continues along
the wall of the stomach
- This initially results in the production of chyme
which when fully broken down in the small intestine
is absorbed as chyle into the lymphatic system.
- Begins In the esophagus
- Peristalsis is the
rhythmic contraction of
muscles
- by the mastication of
food by the teeth
- by the
muscular
contractions
of peristalsis
- Gastric juice
in the stomach
is essential
- production of mucus in the stomach.
- production of mucus in the stomach.
- Many Stages
- Most of the digestion of
food takes place in the small
intestine
- Water and some minerals are reabsorbed
back into the blood, in the colon of the large
intestine.
- The waste products of
digestion are defecated
from the anus via the
rectum
- There are several organs and other components
involved in the digestion of food.
- The organs know as the accesory digestive glands
- Liver
- Gall bladder
- pancreas
- other components
- The mouth
- Teeth
- Epiglottis
- The mouth
- Liver
- The organs know as the accesory digestive glands
- The largest structure is
the gastrointestinal tract
(GI tract).
- This starts at the mouth and
ends at the anus
- covering a distance of
about nine (9) meters
- covering a distance of
about nine (9) meters
- The largest part of the
GI tract is the colon or
large intestine
- Water is absorbed here and
remaining waste matter is stored
prior to defecation.
- Water is absorbed here and
remaining waste matter is stored
prior to defecation.
- This starts at the mouth and
ends at the anus
- A major digestive organ is the stomach.
- Within its mucosa are millions of
embedded gastric glands.
- Their secretions are vital to the
functioning of the organ
- Their secretions are vital to the
functioning of the organ
- Within its mucosa are millions of
embedded gastric glands.
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