• The large intestine produces hormones that send messages to the other parts of the body.

2.The small intestine is not flat or smooth.

It has mucosal folds — intricate folds on the intestine’s surface,villi — tiny, finger-like projections that line the inner wall of the intestine and microvilli — even smaller, hair-like projections on the villi.

•The lining of the stomach can change colour in response to emotions, similar to blushing.

•The stomach has gastric acid so strong that it can dissolve metal so that it can kill harmful microorganisms within food and drinks.

2)The small intestine is also super thin, just one and 1/2 to two inches around, almost the diameter of a golf ball, yet its surface is massive.

3)Over 90% of all nutrient absorption takes place in the small intestine.

•You can swallow stuff upside down.

•It contains nerves that coordinates swallowing

•If the lower part doesn’t work, it will have acid that rises up and is really painful.

•The surface of the tongue is covered in bumps called papillae, which house taste buds.

Size & Location 📏

About 1.5 meters (5 feet) long and 7 cm (2.8 inches) wide.

Surrounds the small intestine like a frame, starting at the cecum and ending at the anus.

The intestine ABSORBS not DIGESTS

The large intestine absorbs water and electrolytes from undigested food, making it more solid.

It also absorbs vitamins like Vitamin K and biotin.

•The normal colour of the tongue is pink.If it’s another colour,and u didn’t eat anything,it means that u might have a disease.Or u may be sick

• duodenum

• Jejunum

• Ileum

• Unique print:

  Just like a fingerprint, your tongue has a unique print, shaped by its texture and taste bud distribution. 

• Eight muscles:

  The tongue is composed of eight muscles that work together, making it the most flexible muscle in the body. 

  
  

2)The small intestine is also super thin, just one and 1/2 to two inches around, almost the diameter of a golf ball, yet its surface is massive. If you flattened it out, it would be about the size of a tennis court.

-Streptococcus

- Neisseria

- Prevotella

-Veillonella

(The picture is how the bacteria prevotella looks like under a microscope)

It’s surface area is not smooth

2.Has Its Own Nervous System 🧠

It can feel

3.Absorbs Different Nutrients Simultaneously 🍎🥩🥑

It absorbs nutrients

4.Length Varies Between People 📏

It is very long

5.Produces Important Hormones 💉

It produces these chemical substance is our body that protect us.

6.Immune System Hotspot 🛡️

It can protect us from virus

7.Quickly Regenerates 🔄

It builds a new lining every 2 to 5 days to protect itself

Saliva contains antibacterial and antifungal proteins that aid in the healing and repair of injuries within the mouth.

• Saliva is a tooth protector

Saliva contains sodium bicarbonate that neutralises acids that cause tooth decay and acts as a buffer against decay-causing bacteria, helping to rebuild tooth enamel.

•The gullet also known as the esophagus, is a muscular tube that connects the throat to the stomach.It plays a key role in the digestive system by transporting food and liquid from the mouth to the  stomach.

• The length of the gullet is about 25 cm for and adult.

• The main function is to transport swallowed food and drink from the mouth to the stomach.

• The gullet dose not digest food.

• At the lower end of the gullet is a ring of muscle called the lower gullet sphincter.

2. The tongue can detect 5 types of taste which are sweet , sour , salty, umami ( savoury , meaty flavour 🥩)and bitter ! 🍬🧂🤮

3. Taste buds need saliva to dissolve food particles, allowing the taste cells to detect flavours. 🔎

4. The colour of your tongue can signal your overall health; a healthy tongue is typically pink. 🥗

5. The tongue heals quickly; if you burn your tongue, the taste buds will regenerate within about two weeks. 👅

6. Men's tongues are actually longer than women's tongues. 🙋‍♂️👅
   

7. A single milliliter of saliva can contain over a million bacteria! 🦠💧

•Esophageal cancer is a disease in the tube that brings food to your stomach. It’s hard to notice at first, you might have trouble swallowing or chest pain. It spreads fast and is tough to treat, especially if it's found late.

•Esophageal perforation is when your food tube gets a hole or tear. It can happen if you swallow something sharp. It causes really bad chest pain and can make you sick.

• Lysozyme is an enzyme in your saliva that disintegrates many bacteria and prevents the overgrowth of oral microbial populations in your mouth.

• Saliva also contains an enzyme called amylase,which helps your stomach break down starches in food and protects against infection.

This is what the large intestines look like from the inside

An adult's gullet is typically around 25 to 30 cm

child's gullet length : starting at 8-10 cm at birth and reaching approximately 16.8 cm around 6 years old

The largest human tooth ever recorded was extracted in Germany by Dr. Max Lukas in 2018 measuring 37.2mm (3.72cm) with most of its length being its root below the gum line.

1.only being able to eat small meals as the main purpose of the stomach is to hold food

2.you might get sick more easily as the acid in the stomach is meant to sterilise dirty food

3.you might need to take supplements as the stomach helps with absorption of iron and B12.

To sum up though it is possible to survive without a stomach we should be grateful that we have one .

•muscles must contract and relax to move food down properly

The large intestine makes the gas.

Birds do not have a large intestine.

Most people can live without a large intestine! (But the functions of the large intestine must be compensated)