A poem on Muscles.......

MUSCLES

We need them to get up and go to the mall
Without them we would slump like a rag doll
We need them for dancing,smiling and even frowning
They help us swim to shore when we are almost drowning
They are even used for breathing, walking and our vocal cords when we are singing
They make us stand up and go to pick up the phone when it is ringing
Some of them work according to you (voluntary)
Others work non-stop your whole life through
Voluntary muscles help us move our bones
They make our legs jump over stones
There are more than six hundred in our body, all told
The bones up, they hold
They make up forty percent of our body weight
They contract and relax to help us stand straight
The biggest is the Gluteus Maximus in the butt
An example of an involuntary muscle is the gut
Our heart is an involuntary muscle which we can not live without
Our tongue is a voluntary one, inside our mouth
Muscles show unity and work together
They are as strong as leather
One pulls, the other relaxes
The spinal cord sends signals to them, to show reflexes
They can anaerobically respire
Mostly those of sports stars that you aspire
When you are out of breath
They save you from Death

THANKYOU!!!

Respiration

You breathe in Oxygen and give CO2 out
Done by us with our Nose and by ant eaters with their snout
Respiration is not only about Inhalation and Exhalation
It's also about a process called Oxidation
Without Oxygen we can survive only for about a minute or two
It is the most essential thing required by you
Oxygen joins with Carbon in food when it is broken down
Be careful in the swimming pool otherwise you will drown
Then your brain cells will begin to die
and then to the world you will have to say good bye
The organ through which we breathe can also smell the pleasant smell of a rose
Yes! you guessed right it is our nose
Sometimes we breathe through our mouth
From where the air goes towards the south
Into a tube, in which, at the top is the pharynx
In the middle is the Larynx
And finally,the trachea at the bottom
Then finally your lungs come
The spongy, greyish pink bags in your chest
Filtering air they do the best
The tube like structure inside each of your lungs called the bronchus
Branches into smaller ones called bronchioles and the finally the Alveolus
From here the filtered oxygen goes to the Heart
And then the whole process begins again from the start!

My poem on Blood..........

Blood is a red substance 
In which Red blood cells ,white blood cells and platelets dance

It is a liquid,haemoglobin makes it red

It is most required by the brain in your head

Red blood cells,white blood cells'platelets amd plasma are the main components of blood

They come oozing out when you fall with a thud

Plasma is the yellowish,clear liquid

Red blood cells,white blood cells,platelets,salts ,fats and sugars float in this fluid (plasma)

The most numerous are the red blood cells,which carry oxygen and are shaped like a button

White blood cells kill germs and other foreign material, for which they are very glutton

Platelets are essetial for clotting of blood

In your cuts don't let in particles of mud

Your white blood cells will have to work harder for you to survive

Only then will you  be able to thrive!!!!!!!!!!!

HOPE YOU LIKED IT!!!!!

I drew it!!!!!!

I know this is the second time I am posting this but......I know i am boasting.....I love this drawing!!!!!!!!!!

What I think of the BRAIN.......

Brain

Here is what I think about the brain in the form of a poem.......

The brain is a little squishy blob in your head

It shows you dreams when you are in bed

The cerebrum is where you think

The medulla is which makes you blink

It controls all your senses

When attacked, thinks of many defences

The brain is a bundle of nerves

As a thinking device it serves

It is full of about 10 million nerve cells

The body what to do, it tells

The left side controls your right side

The rules of the right side the left side has to abide

The cerebrum helps you to read,write,solve maths problems and understand science

It also helps us to read traffic signs

The medulla controls the blinking and breathing 

And the pineal gland* helps us from too early teething

The cerebrum in the brain controls our imagination

It also helps the president control the whole nation

If we didn't have a cerebellum we wouldn't be able to balance on our bicycle

Nor could we do the moonwalk like Michael

If we didn't have a brain 

Our life would be in vain

We wouldn't be able to walk, talk , dance, sing, smell , hear or taste 

Our life would be a complete waste

I hoped you liked it.....

(Please do not copy)

I will be coming up with a new poem soon.......so to stay updated please follow the blog (you can also follow by e-mail)

I will also be awaiting for  some ideas from you.....so please comment your ideas.......

Thankyou,

The creator of the blog,

Yuts

(*at dark the pineal gland produces certain chemicals which prevent kids from becoming adults to soon)

Our heart....

 Human Heart

As I said I would tell you more about the heart in this post.....

I have lots to tell you in this....I even made a diagram myself of the heart (please don't see the neatness , I made it while watching T.V).

1. So lets start with, What the heart is and what it does.

• The HEART is the most important organ of the circulatory system. 
• It is a muscular organ located in the centre of the body,between the lungs, slightly tilted to the left.  (some people say the heart is at the left side of the body, I thought so too,but it isn't ,it is centrally located  and tilted towards the left).
• It weighs 200 to 350 grams.
• It pumps blood to all parts of the body. (nothing new,we all knew this since we were probably in the first grade) 

Heart Rate

• The number of times our heart beats (contraction and relaxation of the muscles in our heart) in a minute is called heart rate. (which is normally 80 to 100 times)
• A doctor uses a stethoscope to listen to our heartbeat.

Structure of the heart

• The heart is divided into 4 chambers.Two superior atria and two inferior ventricles. The atria (Plural : Atrium) are the receiving chambers and the ventricles are the discharging chambers.

                                 (it is a reflected image because i took it with my webcam) .

• The atrium has comparatively thinner walls.
• The walls of the ventricles are thicker.
• The right auricle receives carbon dioxide rich blood from various tissues from the body. The auricle then sends the carbon dioxide rich blood to the lungs through the pulmonary artery.
• The left auricle receives oxygen rich blood from the lungs through the pulmonary vein.The left auricle then pumps the blood to the other parts of the body with the help of the aorta.
• The right side of the heart is separated from the left side with the help of the septum,so that the pure and impure blood does not mix.
• The heart has a number of valves that allow the blood to flow in one direction only. 

Working of Heart

                                        (it is a reflected image because i took it with my webcam) 

• From lungs the oxygenated blood is taken to the left atrium through pulmonary vein.
• From the left atrium the oxygenated blood reaches the left ventricle through the valve.
• When the ventricle contracts, the oxygenated blood from the left ventricle passes through the aorta and reaches different parts of the body.
• From the tissues, the carbon dioxide rich bloodis taken to the right atrium,through venacava.
• When the atrium contracts, the carbon dioxide rich blood passes to the right ventricle through the valve.
• When the ventricle contracts , the carbon dioxide rich blood is taken to the lungs by the pulmonary artery.
• The purification of the blood takes place in the lungs and is then taken to the heart through the pulmonary vein.

Science rules!

A Poem on the heart....

Heart

This is a small poem on the heart written by me.....I hope you like it.. :

Heart is the organ the size of a fist, that does all the pumping

It works a little harder when we are jumping

It is the organ that pumps blood to all parts of our body

It gives a lup-dup melody

It is located in the centre 

God is the inventor

It is tilted to the left side

That is where it does reside

At the top there are the Auricles

And at the bottom are the ventricles

It beats  sixty to eighty times in a minute throughout our life

Don't try and cut it with a knife

If you do the pure and impure blood will mix

then you will be in a terrible fix

Our heart is supplied with many arteries

To all parts of the body blood it carries

That is it for now

But there are more interesting things on the heart that will make you say wow!!!

Check out the next post for more interesting information about the heart!

Nutrition in Humans

Nutrition in Humans

Nutrition (also called nourishment or aliment) is the provision, to cells and organisms, of the materials necessary (in the form of food) to support life.

All animals including humans need certain nutrients to stay alive and grow .These nutrients are obtained from food.
These nutrients are:

1. Carbohydrates
2. Fats
3. Proteins
4. Vitamins
5. Minerals

(we also require water and roughage)

• The food that we eat (feeding) is not in the form that can instantly provide you with nutrients.First it has to be broken down into small particles.
• These particles must be changed into simple,soluble,forms which our body cells can absorb.

Only then can food provide nutrients.

The various processes required for digestion of food are as follows:

1. Ingestion is the consumption of a substance by an organism. In animals, it normally is accomplished by taking in the substance through the mouth.
2. Digestion is the mechanical and chemical breakdown of food into smaller components that are more easily absorbed into a blood stream.
3. Absorption is the process by which the food in its soluble form passes through body fluids such as blood.
4. Egestion is the process of elimination of undigested solid parts of the food.

The Human Digestive System

The body performs the steps of nutrition inside a long tube ,coiled in some places called the gut or the alimentary canal.

It's main parts are :

1. The mouth or the Buccal cavity
2. food pipe or oesophagus
3. stomach
4. small intestine
5. large intestine
6. rectum
7. anus

DIGESTIVE JUICES

Salivary glands,liverlgall bladder and pancreas are organs that secrete digestive juices that convert complex substances in food into simpler ones.

digestive juices are also secreted by inner walls of the small intestine and the stomach.

Digestion in the Mouth

Food is taken in or ingested through the mouth.

When food enters the mouth, its digestion starts by the action of mastication, a form of mechanical digestion, and the contact of saliva. Saliva(watery substance located in the mouths of organisms), which is secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food. After undergoing mastication and starch digestion, the food will now be in the form of a small, round mass, called a bolus.

Saliva breaks down starch into sugars.

Mastication: Chewing food to break it into small pieces.

Tongue

The tongue is skeletal muscle on the floor of the mouth that manipulates food for chewing (mastication) and swallowing(deglutition). It is sensitive and kept moist by saliva. The underside of the tongue is covered with a smooth mucous membrane. The tongue also has a touch sense for locating and positioning food particles that require further chewing. The tongue is utilized to roll food particles into a bolus before being transported down the oesophagus through peristalsis.

The sublingual region underneath the front of the tongue is a location where the oral mucosa is very thin, and underlain by a plexus of veins. This is an ideal location for introducing certain medications to the body. The sublingual route takes advantage of the highly vascular quality of the oral cavity, and allows for the speedy application of medication into the cardiovascular system, bypassing the gastrointestinal tract.

Teeth

Teeth of humans are small, calcified, hard, whitish structures found in the mouth. They function in mechanically breaking downitems of food by cutting and crushing them in preparation for swallowing and digestion. The roots of teeth are embedded in themaxilla (upper jaw) or the mandible (lower jaw) and are covered by gums. Teeth are made of multiple tissues of varying density and hardness.

The first set of teeth (also called the "baby", "milk", "primary", and "deciduous" set) normally starts to appear at about six months of age.

Humans usually have 20 primary (deciduous or "baby") teeth and 32 permanent (adult) teeth. Teeth are classified as incisors, canines,premolars, and molars. Incisors are primarily used for biting pieces from foods such as raw carrots or apples and peeled but uncutbananas, while molars are used primarily for grinding foods after they are already in bite size pieces inside the mouth.

Journey through the food pipe or Oesophagus

 The oesophagus leads from our mouth to the stomach.It is made up of muscles.These muscles gently push food down to your stomach in a wave like action called peristalsis.This movement takes place throughout the alimentary canal to push the food forward.

Digestion in the stomach

Our stomach is a J shaped bag. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. As these two chemicals may damage the stomach wall, mucus is secreted by the stomach, providing a slimy layer that acts as a shield against the damaging effects of the chemicals. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which are waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes. After some time (typically an hour or two in humans, 4–6 hours in dogs, somewhat shorter duration in house cats), the resulting thick liquid is called chyme. When the pyloric sphincter valve opens, chyme enters theduodenum where it mixes with digestive enzymes from the pancreas, and then passes through the small intestine, in which digestion continues.

Digestion in the small intestine

The small intestine is a 7.5 metre long tube through  which most of the digestion occurs.The muscles in the small intestine mix food with more digestive juices.some juices are secreted by the cells of the small intestine itself.others come from the liver,which is the largest gland in the body and produces bile juice which is stored in the gall bladder a. The bile breaks down fats into tiny droplets that can be digested and absorbed more easily. The digestive juices then act on these tiny droplets to form simpler compounds known as fatty acids or glycerol.The pancreas secrete the pancreatic juice that changes starch into simple sugars and proteins into simpler compounds called amino acids.

Absorption in the Small intestine

The digested food is then absorbed through tiny finger like projections called villi (singular=villus).Villi increase the surface area of absorption of digested food. Each villus has a network of fine blood capillaries close to the surface.The food absorbed on the surface of the villus passes into the blood in the capillaries. 

Assimilation

The food absorbed in the blood is transported to different parts of the body.It is used to provide energy and materials for growth and repair of body tissues.

Glucose is broken down in the cells with the help of oxygen into carbon dioxide and water,to provide energy.Amino acids are used for buildings and repairing of body parts.Fatty acids and glycerol are stored under the skin and act as energy reserves.

Egestion

Not all the food you eat is digested and absorbed.The food cannot be digested moves from the small intestine into a wide tube called the large intestine.

Here,most of the water present in the waste is absorbed. The waste food which is now almost solid is stored in the last part of the small intestine called the rectum.It is the passed out through the anus.

Some questions asked by the smart students of the class:

Q.When there is a gall bladder stone and the gall bladder has to be removed, where does the bile go?

A.The bile directly goes to the small intestine and is not stored between meals.

Q.Sweet,salty, sour and bitter are all tastes recognized by the taste buds...then what about spicy?

A.Spicy taste is recognized by the pain sensors in our tongue.