Maintenance of the Body
, also called the
or gut, is the continuous muscular tube that winds through
the body from the mouth to the anus. It
down into smaller fragments (
the digested fragments through its lining into the blood.
Te organs of the alimentary canal are the
. Te large
intestine leads to the terminal opening, or
. In a cadaver, the
alimentary canal is approximately 9 m (about 30 F) long, but in a
living person, it is considerably shorter because of its muscle tone.
±ood material in this tube is technically outside the body because
the canal is open to the external environment at both ends.
Overview of the Digestive
Describe the function of the digestive system, and
differentiate between organs of the alimentary canal and
accessory digestive organs.
Te organs of the digestive system fall into two main groups: (1)
those of the
ish) and (2)
accessory digestive organs
Mouth (oral cavity)
Alimentary canal and related accessory digestive organs.
asterisks are accessory organs. Those without asterisks are alimentary canal organs (except the
spleen, a part of the lymphatic system). (For a related image, see
A Brief Atlas of the Human
, Figure 64a.)