How to draw human digestive system


The human digestive system starts with mouth and ends with anus. Intake of food into to mouth is called Ingestion.Mouth encloses a cavity within called Buccal cavity or Oral cavity. Three pairs of salivary glands pour their secretions called saliva in to this cavity. The muscular tongue pushes the food under grinding teeth as it mixes with saliva, this process is called "Mastication". Mastication makes the food into ball of paste. Salivary amylase" an enzyme in saliva starts the digestion of starch right away from mouth. As soft ball of food enters Oesophagus, the wavy movements (Peristaltic movements) drive the bolus into stomach. Oxyntic cells present in inner lining of stomach secrete Hcl acid which has killing action on Microbes and partially denatures the proteins in food.Slimy mucous secreted my mucous glands of stomach protect inner lining from self destruction due to acid. Gastric juices of stomach starts digestion of Proteins, lipids but not carbohydrates.



Human digestive system mainly have three parts to be drawn in proportion they are the Stomach, Liver and Intestines.Students feel difficult while drawing the duodenum, bile duct, Gall bladder and Pancreas in  a narrow space. Even the coiled small intestines look complicated.Now, lets start drawing in easy steps.

Step 1:

Draw two parallel lines horizontally and two vertically as shown.
The middle box is for Stomach.

 Step 2:

Draw Stomach as shown, ensure left side of stomach touches the left line. Accommodate  Liver too as shown.

 Step 3:

Draw bile duct opening into duodenum, represent overlapped part of liver on stomach with dotted lines

Draw pancreas below stomach as shown.

Step 4:

Draw large intestine along the guide lines as shown.



Step 5:

Draw folded patterns in large intestine as shown.

Step 6:

Draw a curve in the middle of large intestine.


Complete the man's face and now label the parts neatly.






28 comments:

Chiki said...

Just awesome:) ..helped me a ton.. thank U site makers :) . Hope to get more n more such neat ways

Anonymous said...

Simply simple ans superb!!!! I am sharing this on facebook with my friends. Its very useful thanks!!!!

Unknown said...

if you draw body also it will be awesome.......

kiran said...

Sure sai Naveen I will add it

kiran said...

Hi body version is now available.

Unknown said...

Thanks sir

Anonymous said...

man u r a god for me it helped a lot dude u saved my marks !!

Winged Pen said...

Thank you. It helped me a lot

Anonymous said...

This helped me with my sister project so I am very thankful for it. Now she will get a very good grade and be happy.

kiran said...

A little Donation from you will make us happy. So do donate.

PROBLEM DOC said...

this helped I and my friend alot
THANK U

Anonymous said...

Helped me a lot. Thank you so much

Unknown said...

Thanks a ton.May Allah bless you.

Makingmillionaires said...

helped us a lot to the extent of getting 100/100 in biology

Unknown said...

Thx d drawing helped me alot

Dongodstime said...

Thanks thats Was Neat Drawing

Unknown said...

nice and useful diagram

Just an Instrument of GMCKS said...

I LEARNT ABOUT DIGESTIVE SYSTEM EASILY THROUGH THIS PICTURE ..THANKS ALOT FOR THE SITE MAKERS ...

Unknown said...

Thanks ๐Ÿ˜Š

Anonymous said...

Very neat and EASY STYLE to draw a diagram.It is very useful and i liked it.Thanks.


Unknown said...

really hard and complicated average

qwe said...

waste

Anonymous said...

OMG THANKS A LOT HELPED A LOT

Anonymous said...

Nice

Art is Fun said...

It is super easy. I am glad to find such a easy and beautiful diagram for digestive system

Amrit Raj said...

Thanks man

Unknown said...

ssalon ne scam kara hai, pehle kehte hain simple sa intestine banao, fir line kheechne ko kehte hain, aur ek hi step mein small intestine aur body banwa di inhone

Anonymous said...

Thank you so much my anatomy exams is days near I needed this๐Ÿ˜