lesson plan 2 in science

8/20/2019 Lesson Plan 2 in science

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LESSON PLAN IN IMPORTANCE OF DIGESTIVE SYSTEM

I. Objectives

At the end of the lesson, the students will be able to:

1. Recall the functions of digestive system.2. Draw the parts of digestive system.3. Discuss the importance of the digestive system.

II. Subject Matter

A. opic: !uman Digestive "ystem

#. References:

#.1$ %&ploring 'ife hrough "cience: #iology

#y: Ramon, (.A.

pg: 2)*+ 2-

#.2$ odern #iology

#y: /campo, 0.#.

pg: **+ -1

. aterials:

or teachers: visual aids, laptop, proector

or students: noteboo4, paper, ballpen

D. eaching "trategies:

D.1$ Discussion ethod D.2$ 'ecture ethod

III. Proceure

Teac!er"s Activit#

A. Dai$# Routi%e

A.1. 0rayer

'et us pray first.

A.2. 5reetings5ood morning, class6

A.3. onditioning of the room

0ic4 up the pieces of paper.

A.). hec4ing of Attendance

"ay present as 7 call your name.

.

&. Reca$$

Stue%t"s Activit#

8one of the student will lead the prayer $

5ood morning, ma9am6

8"tudents will pic4 up the pieces of

paper$

8"tudents will say present as the

teacher call their names.$


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hat are the parts of digestive

system;

C. Motivatio%

8he teacher groups her students into

two groups.$

7 have ery good.

7t produces bile and processes

nutrients obtained from food.

orrect6

7t is a muscular tube down which

travels from the mouth to the stomach.

?ou9re answer is correct.

7t secretes uices that get digestion

underway.

orrect6

7t stores bile.

@ice Answer.

7t secretes enymes into the small

intestine.

>ery well sad

outh, esophagus, liver, stomach,

pancreas, gall bladder, rectum, anus,

small and large intestine

outh

'iver

%sophagus.

"tomach.

5all bladder.

0ancreas.


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>ery good.

7t is the main site where food is

digested.

@ice answer.

And last


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hat9s right.

he mouth contains many other

organs + such as the teeth, tongue,

and the ducts of the salivary glands +

that wor4 together to aid in the

ingestion and digestion of food. he

mouth also plays a maor role in the

production of speech through the

movements of the tongue, lips and

chee4s.

he liver is a large, meaty organ that

sits on the right side of the belly.

eighing about 3 pounds.

Do you thin4 what is the natural color

of a liver;

Right answer.

@ormally you can9t fell the liver,

because it9s protected by the rib cage.

hat are the two large sections of the

liver;

he liverCs main ob is to filter the

blood coming from the digestive tract,

before passing it to the rest of the

body. he liver also deto&ifies

chemicals and metabolies drugs. As

it does so, the liver secretes bile that

ends up bac4 in the intestines. he

liver also ma4es proteins important for

blood clotting and other functions.

hat is esophagus;

he liver is reddish+brown in color.

he right and left lobes.

%sophagus is a muscular tubeconnecting the throat 8pharyn&$ with the

stomach


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called mucosa. he esophagus runs

behind the windpipe 8trachea$ and

heart, and in front of the spine. (ust

before entering the stomach, the

esophagus passes through the

diaphragm.

hat do you call to the top and low

end of the esophagus;

ell said.

he upper esophageal sphincter

8E%"$ is a bundle of muscles at the

top of the esophagus. he muscles ofthe E%" are under conscious control,

used when breathing, eating,

belching, and vomiting. hey 4eep

food and secretions from going down

the windpipe.

he lower esophageal sphincter 8'%"$

is a bundle of muscles at the low end

of the esophagus, where it meets the

stomach. hen the '%" is closed, it

prevents acid and stomach contents

from traveling bac4wards from the

stomach. he '%" muscles are not

under voluntary control.

he stomach is the main food storage

tan4 of the body. 7f it were not for the

stomach9s storage capacity, we would

have to eat constantly instead of ust a

few times each day. he stomach also

secretes a mi&ture of acid, mucus,

and digestive enymes.

hat is the role of digestive enymes

in our body;

here we found stomach in our

Epper esophageal sphincter 8E%"$ and

lower esophageal sphincter 8'%"$.

7t helps to digest and sanitie our food

while it is being stored.

7t located ust inferior to the diaphragm


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>ery good6

he gallbladder is a pear+shaped,

hollow structure located under the

liver and on the right side of the

abdomen. 7t serves as a reservoir for

bile while it9s not being used for

digestion. he gallbladderCs absorbent

lining concentrates the stored bile.

!ow do bile helps the digestive

process;

@ice answer.

o identify the pancreas, what is the

shape of it;

hat9s right.

he pancreas aids in digestion by

producing enymes that digest several

types of nutrients, including proteins,

fats, carbohydrates, and nucleic acid,

a common acid that acts as building

bloc4 in D@A and is essential for all

living things.

hat are the

important hormones that help regulate

the level of sugar in the blood;

orrect.

he bile helps the digestive process by

brea4ing up fats. 7t also drains waste

products from the liver into the

duodenum, a part of the small intestine.

he pancreas is a wing+shaped gland

that e&tends from the duodenum 8the

upper portion of the small intestine$ to

the spleen.

7nsulin and glucagon.


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pancreases do not produce enough

insulin have a condition;

>ery well said.

he rectum is the concluding part of

the large intestine that terminates in

the anus. he average length of the

human rectum may range between 1F

and 1 cm. 7ts diameter can be

compared to that of the sigmoid colon8the part of the large intestine nearest

the rectum$ at its onset. !owever, it

becomes larger near the anus, where

it forms the rectal ampulla.

hat is the role of the rectal ampulla;

?ou9re right.

he e&pansion of the rectal walls

causes the stretch receptors within the

walls to stimulate the urge to defecate.

7f the defecation process is delayed, it

may result in constipation. hen the

storage site becomes full, the

intrarectal pressure causes the anal

canal walls to dilate and e&pand. his

results in the feces entering the canal.

he small intestine is made up of

the duodenum' eunum,

and ileum. ogether with the

esophagus, large intestine, and the

stomach, it forms the gastrointestinaltract. 7n the small intestine food that

has already been bro4en down by

diabetics have a pancreas that does not

produce any insulin, and they must

administer the hormone via inections

through their s4in. ype 2 diabetics

produce an insufficient amount of

insulin.

he 4ey role of the rectal ampulla is to

act as a temporary storehouse for

feces.


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second part of the alimentary canal.

he large intestine consists of the

cecum and colon. 7t begins at the right

iliac region of the pelvis 8the region

ust at or below the right waist$ where

is continues from the small intestine

and continues up the abdomen.

hereafter it traverses across the

width of the abdominal cavity, and

then it turns down, continuing to its

endpoint at the anus.

hat is the important role of the anus

in digestive system;

%. 5eneraliation

he human digestive system is a

comple& series of organs and glands

that processes food. 7n order to use

the food we eat, our body has to brea4

the food down into smaller molecules

that it can process= it also has to

e&crete waste.

ost of the digestive organs 8li4e the

stomach and intestines$ are tube+li4e

and contain the food as it ma4es itsway through the body. he digestive

system is essentially a long, twisting

tube that runs from the mouth to the

anus, plus a few other organs 8li4e the

liver and pancreas$ that produce or

store digestive chemicals.

. Application

Draw and label the digestive

system.

5. >aluing

Digestion is important for brea4ing

down food into nutrients, which the

body uses for energy, growth, and cellrepair. ood and drin4 must be

changed into smaller molecules of

7t e&cretes the digestive wastes.

8"tudents draw the digestive system.$


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IV. Eva$uatio%(

atch column A with those column #. rite your answer before each number.

olumn A

GGGGGG1. outh a. he hollow cavity that allows food and air

the enter the body.

GGGGGG2. 'iver b. a muscular tube connecting the throat

8pharyn&$ with the stomach.

GGGGGG3. 'arge intestine c. 7t is the main food storage tan4 of the body.

GGGGGG). "mall intestine d. made up of the duodenum' eunum, and ileum.

GGGGGG. Anus e. 7ntestine consists of the cecum and colon.

GGGGGG-. "tomach f. concluding part of the large intestine that

terminates in the anus.

GGGGGGH. Rectum g. a wing+shaped gland that e&tends from

the duodenum 8the upper portion of the

small intestine$ to the spleen.

GGGGGG. 5all bladder h. 7t e&cretes the digestive wastes.

GGGGGG*. %sophagus i. a large, meaty organ that sits on the right side

of the belly.

GGGGGG1F. 0ancreas . a pear+shaped, hollow structure located

under the liver and on the right side of the abdomen.

4. digestive process by brea4ing up fats.

V. Assi)%*e%t(

1. Discuss the function of the e&cretory system.2. %numerate the organs in the e&cretory system of human body and give their function.

Reference: odern #iology

#y: /campo, 0.#.0age: -3F+ -3)


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Mar# ,o# V. Mo%sa%to

Fre%)e$#% e$a Cru+

"ubmitted to: -erbert M. e ,esus.


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lesson plan 2 in science

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