EXPLORING THE BODY SYSTEM BY SYSTEM:
DIGESTIVE SYSTEM: (page 94, 127-130)
Name: __________________ 8___
LEARNING OUTCOME #3: INTERPRET THE HEALTHY FUNCTION OF HUMAN BODY SYSTEMS, AND ILLUSTRATE WAYS THE BODY
REACTS TO INTERNAL AND EXTERNAL STIMULI
3a) describe, in general terms, body systems for respiration, circulation, digestion, excretion and sensory awareness
3b) describe in general terms, the role of individual organs and tissues in supporting the healthy functioning of the human body
3c) describe ways in which various types of cells contribute to the healthy functioning of the human body
3d) describe changes in body functions in response to changing conditions
FUNCTION: break down food pieces into much ____________ particles so they can be
____________ and _____________________throughout the body. _______________ tissue
lines all the inner organs.
Work through the stations to complete the following stages and types of digestion.
1. You receive your energy from _____________
(sugars and starches), ____________ (fats
and oils) and ___________________.
2. Digestion can be broken down into two
different types.
a. ____________________ digestion
involves the physical breakdown of
food. It starts in your
___________________.
b. _____________________ digestion also
starts in your mouth but uses
___________________ to chemically
break food down.
c. __________________ digestion using
an enzyme called _________
(produced in 3 glands around your
mouth).
d. Salivary enzyme digests large
____________ molecules into smaller
______________ molecules.
4. Chyme is the partially digested food
that is found in the stomach.
5. The digestive system is actually a long tube with few attachments. Complete
the chart below describing the steps to the digestive system.
STRUCTURE
ESOPHAGUS
WHAT HAPPENS
-the esophagus is made up of __________ muscular tissue covered by
________________ tissue.
-swallowed food moves down the esophagus in wave-like movement
called _____________________ caused by the contraction of muscle
tissue.
STOMACH
-______________ digestion continues by the muscular walls of the
stomach churn the food.
- ______________ juices are secreted. Hydrochloric acid, mucus, water
and the enzymes chemically digest the _____________into smaller
pieces.
-mucus prevents the gastric juices from _______________ itself.
SMALL
-_____________________ digestion continues and the absorption of the
INTESTINE
tiny food molecules happens.
Draw and label a villi
-_________________ produces and sends enzymes into the small
intestine to continue break down of _____________________ and
_______________________ into small particles.
The pancreas also produces insulin, which regulates blood sugar.
-the liver produces _____________ that is stored in the _______
_________. When released into the small intestine it helps break up
the ________________ (fats and oils).
-surface area of the small intestine is increased by small, finger-like
projections called __________________. This helps in the absorption of
________________ into the ___________ tissue and then into the
_________________.
LARGE
-digestion is ___________________________.
INTESTINE
-absorption of __________________ along with some ____________ and
______________.
-undigested food is formed into ___________ and collected in the
_______________.