Educational Blogging

           Blogging is one of the eventual realization of web 2.0 technologies. It is the driving engine behind this online information revolution. Thousands of blogs are created everyday and for different purposes. Some people blog to make money, some to share their voice with the world, some to immortalize their life events and diaries.In my blog, each post usually is written quite quickly, and I publish each post immediately. Rather than drafting and revising until each piece of writing is perfect, I tend to publish more frequently and with less perfectionism. I blog my immediate impressions and my first responses to ideas I have read about, or I blog about my experiences or about discussions that are going on in other blogs.

           When I blog, I’m always aware that I have an audience. And so I write out my thoughts just a little more clearly than I might have in a journal. Most blogs are not read by many people –maybe I have a dozen readers or so. A very few blogs are read by hundreds of thousands of people. Andy Warhol said that everyone has 15 minutes of fame. That’s changed today: on the internet, everyone is famous to 15 people. And 15 people can be just about the perfect size for a group of learners and thinkers. I started blogging when I was in 2^nd year college and I continue it because of our subject, and it helped me immensely. I rapidly found that the blogs I posted was helping me become more confident and that I was developing a clearer voice of my own – and that increased confidence carried through into my blog posts. I enjoy my blog experience, I also gained friends who follow and visit my blog site.

              Blogging really help, especially students to gain confidence,to voice out their thoughts. Blogging enhances literacy skills of students and also it gets students engaged and boost their motivation. Nowadays blogging is a good way to develop students like me in all aspects of learning.. and that is Educational Blogging!

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Evaluation : Write your answer as a comment into the questions below

1.

In which organ does digestion begin?

A.

Mouth

B.

Stomach

C.	Small Intestine

D.	Large Intestine

E.	Stomach and small intestine

2.	What is the name of the stomach cell that secretes hydrochloric acid?

A.	Chrondocyte

B.	Chief cell

C.	Parietal cell

D.	Gastric cell

E.	Glial cell

3.	Which of the following is NOT part of the GI tract?

A.

Esophagus

B.

Stomach

C.	Small Intestine

D.	Large Intestine

E.

Pancreas

4.	Which of the following is NOT a phase of gastric secretion?

A.	Cephalic phase

B.	Gastric phase

C.	Duodenal phase

D.	Intestinal phase

E.	All of these are phase of gastric secretion

5.	Which of the following macromolecules is digested in the small intestine?

A.

Protein

B.

Lipids

C.	Carbohydrates

D.	Nucleic acids

E.	All of the above

6.	The enzyme amylase is secreted into the

A.

mouth.

B.

stomach.

C.	small intestine.

D.	mouth and small intestine.

E.	mouth and pancreas

7.	The major movement of food through the GI tract is called

A.	peristalsis

B.	Segmentation

C.	Hostile churning

D.	Chyme propulsion

E.	Swallowing

8.	Which of the following enzymes digests protein?

A.

Pepsin

B.

Lipase

C.

Amylase

D.

Trypsin

E.	Pepsin and Trypsin

9.	In which gastrointestinal organ does the majority of digestion and absorption occur?

10.	Which two secretions need to be present for lipid digestion?

A.	Amylase and lipase

B.	Bile and pepsin

C.	Bile and lipase

D.	Pepsin and lipase

E.	Pepsin and trypsin

11.	Which organ secretes the majority of digestive enzymes?

A.

Pancreas

B.

Mouth

C.	Small intestine

D.

Liver

E.

Stomach

12.	What is the major cause of duodenal and stomach ulcers?

A.	Acid reflux

B.	Helicobacter pylori

C.

Stress

D.

Alcohol

E.	Acid reflux and Helicobacter pylori

13.	What is the adult dental formula

A.

2:2:1:3

B.

2:1:3:2

C.

2:3:1:2

D.

2:1:3:3

E.

2:1:2:3

14.	In the mouth _______________ mechanically digest food.

15.	In the mouth ________________ chemically digests food.

16.	What important nutrient is made in the large intestine?

A.

Protein

B.

Calcium

C.

Vitamin A

D.

Vitamin K

E.

Vitamin C

17.	What is the hardest substance in the human body?

A.

Bone

B.

Dentin

C.

Enamel

D.	Fibrocartilage

E.	Hyaline cartilage

18.	In which digestive organ is chyme produced?

A.

Mouth

B.

Stomach

C.	Small intestine

D.	Large intestine

E.

Pancreas

19.	Villi and microvilli increase the surface area of the _________________________.

20.	What is the name of the epithelial tissue that lines the stomach and small intestine?  source: www.proprofs.com

Digestive System Facts

The digestive system of humans and other animals plays a vital role in how the body processes the food we eat. There are many components of the digestive system from saliva and chewing food through to the stomach and intestines. Read on to find out how the digestive system works, why we get that grumbling sound in the pit of our stomachs and many other interesting facts.

• ·         The digestive system is responsible for breaking down food we eat into smaller components so that nutrients can be easily absorbed by the body and the waste discarded.

• There are two types of digestion. Mechanical digestion is the physical breakdown of large pieces of food into smaller pieces through, chewing (mastication). While chemical digestion uses enzymes to break down this food mass further into small molecules which the body can separate and use. 
• Saliva in our mouths plays a key role in initial digestion by moistening the food to help with the mechanical chewing and swallowing process. Saliva also contains an enzyme which starts the chemical digestion of starchy foods.
• Our salivary glands produce around 1.5 litres of saliva each day!
• Bolus is the name of the small round slurry mass produced for swallowing as a result of chewing and starch digestion.
• The pharynx, at the back of the throat, has a flap of tissue called the epiglottis that closes during swallowing to prevent food going down the trachea (windpipe).
• Once swallowed, bolus (food) travels down through the esophagus to the stomach, taking about 7 seconds to get there.
• Muscles in the esophagus tighten and relax to create a wave-like process called peristalsis which pushes food down the small tube, which is why your food never falls back out if you happen to be eating and swallowing upside down!
• Enzymes called proteases break down proteins within the stomach and small intestine. While in saliva, amylases break down carbohydrates and lipases break down fats.
• The adult stomach has a very small volume when empty but can expand to hold up to 1.5 litres of food when full.
• The inner wall of the stomach secretes hydrochloric acid to help kill bacteria and, along with proteases enzymes, aids in the digestion of food. To protect itself from the corrosive acid, the stomach lining must create a thick coating of mucus.
• Stomach rumblings (borborygmi) are caused by wave-like muscular contractions (peristalsis) at the walls of the stomach and small intestine. These are normal digestion movements, however the process is louder and more noticeable when the stomach is empty as the sound is not muffled.
• Some animals such as cows, giraffes and deer have stomachs with multiple compartments (not multiple stomachs as is commonly believed). While others like seahorses, lungfishes and platypuses have no stomachs at all.
• The small intestine is composed of a duodenum, jejunum, and ileum.
• Most of the digestion and absorption of food nutrients actually takes place in the small intestine. The stomach passes on a thick liquid called chyme and enzymes continue to break this down in the small intestine which absorbs the nutrients into the bloodstream.
• The pancreas secretes enzymes for use by the small intestine.
• On average, the human adult male's small intestine is 6.9 m (22 ft 6 in) long, and the female's 7.1 m (23 ft 4 in).
• The large intestine includes the cecum, appendix, colon, and rectum. It is the final part of the digestive system. It absorbs water from the remaining indigestible food matter, and passes any un-needed waste from the body.
• The large intestine is approximately 1.5 m (4.9 ft) long.
• The liver produces bile for the digestive system and processes the nutrients.
• The gall bladder stores the bile used to break down dietary fat.

source: www.sciencekids.co.nz

Lesson Plan in Biology

I.OBJECTIVES

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

a. Identify the parts and function of Digestive System

b. Study the importance of Digestive System

c. Locate the parts of the Digestive System

II.SUBJECT MATTER

TOPIC  : Digestive System

REFERENCES  : Science & Tech. II e-Biology pp. 159-164

MATERIALS  : Cut-pictures, flash card, picture of Digestive System

VALUES  : Cooperation and Sportsmanship

III.PROCEDURE

TEACHER’S ACTIVITY	STUDENT’S ACTIVITY
A. Preparatory Activity
1.Prayer	One student will lead the class Redly… “Let us pray…In the name of the Father, and of the Son and of the Holy Spirit
2.Greetings	Good Morning Tr. Precious Good Morning Tr. Baby Good Morning Sir Louie Good Morning Sir Sam Good Morning Madam Cantos Good Morning Classmates

3.Warm Up Song	Good morning Classmates now let us welcome our practice  Teacher, Tr. Precious Tañoan
4.Drill (The teacher will flash pictures of Mitosis) What phase does the following event occur?	-Anaphase -Metaphase
Review (The teacher will show some words) I have here words …Read it first then find the corresponding meaning on the board.

B. Lesson Proper
1.Motivation PUZZLE OK class proceed to your respective group and area. DIRECTIONS: Inside the envelop are cut pictures… Reform the pictures *After solving the puzzle… What is your idea about the picture that you come up with?	(the student will proceed to their group) (Students will start solving the puzzle.) *It’s Digestive System
2.Presentation
Do you have any knowledge about the Digestive System?	*It breaks down food

3.Discussion
*Digestive system takes food into the body. Who can explain which means… *It breaks down food into bits, small enough to pass through the cell membrane *What do you call the process of breaking down foods? After that process the food is now put into the blood. *Do you have any idea on the different parts of Digestive System? Can you give one Redly?	The system responsible for food after we eat is Digestive System. *Digestion *mouth *esophagus *small and large intestine

*And now let’s follow the food as it passes the digestive system. First food enters the mouth where it is chewed by our teeth, wets by our saliva a fluid produced by salivary gland that contains PYTALIN an enzyme that speeds up break down of starch into sugar. From the mouth food pass through the ESOPHAGUS which transact food from the mouth to the stomach by a movement called PERISTALSIS.

*From the esophagus food enters to the STOMACH through a ring shaped muscle called CARDIAC sphincter. Peristalsis mixed food with gastric juices that will result in the churned semi liquid called CHYME. The chime leaves the stomach through pyloric sphincter and enters SMALL INTESTINE. The small intestine signal the pancreas to produce pancreatic juices and gall bladder to release bile.

Pancreatic juices aids in digestion of protein, carbohydrates and fats. Bile is produced in the liver and stored in the GALL BLADDER. It break down fats into smaller droplets. What organ produces bile? How about the one that stores bile? After digestion absorption will take place. What are the substance that was absorbed by small intestine?

*liver *gall bladder *Nutrients

Small intestines the remains of the digestion and absorption are now enters the LARGE INTESTINE where absorption of water occurs. The remains after water has been absorbed are now called STOOL or FECES then it will be stored in the rectum then excrete to the anus.
4.Generalization
Form your group again… Study the picture or puzzle that you’ve solve earlier. Trace the flow of food in the Digestive System and give its importance then discuss it in front. The leader will be the one to discuss.	Students will proceed to their group… Discuss the process with their group mates Present the flow of Digestive System in front

5.Application
Identify the organ that is being described then point the specific organ on the chart.
6.Evaluation
Identification: Identify the following statement. Write your answer on your paper. 1.It is the enzyme that is present in our saliva. 2.It produces the bile. 3.It stores the bile. 4.It is the remains of Digestion after absorption of water. 5.It is the absorption of water takes place.

IV. Agreement

Make a research about the different Digestive disorders. Write it your assignment notebook.