The human ear is a hearing organ designed to collect sound vibrations, and then pass those vibrations to the brain through auditory nerves. The main part of the ear is located inside the skull. The ear has a complex structure; it has several small bones intricately arranged inside it. It has the smallest bone of […]
Benny goes to the park. He rides on a merry-go-round. He swings on a swing. He sits on a see-saw. But it does not go up and down! Benny builds a castle in the sand-pit. But it is no fun! He looks at the birds in the bird-bath. The birds are drinking water happily. He
The olfactory portion of the nose is exclusively involved in the sensation of smell. The olfactory portion of the nose consists of: the olfactory epithelium, olfactory nerves and olfactory bulb. The olfactory epithelium is a soft patch on the roof of the nasal cavity. This epithelium has several olfactory hair cells connected to the olfactory
The nose has an internal air-filled chamber called the nasal cavity. Septum divides the nasal cavity into two sections. The septum walls consist of two skull bones: the ethmoid above and the nasal concha (below). Nasal cavity is connected with the throat. On the upper wall or the roof of the nasal cavity, the olfactory
The nose is the sense organ for smell. It is connected with the olfactory nerves of the brain. The nose helps a person to smell and carry out one of the most important functions called the respiration. It works in coordination with the sense of taste. The main parts of the nose are: the two
Looking for the best children’s activity books to scale up their academic skills? You’ve opted to the exact palace you ought to be. Many parents are worried about whether their child is acquiring all the necessary knowledge. But, on the other hand, children find it boring and exhausting to read books and study. And that’s
It is a sunny day. Benny’s mother prepares the picnic basket. What has she put in it? Sandwiches, fruit, doughnuts, orange juice and water. A mat, plates, glasses and napkins as well. Has she missed out on anything? A ball to play with. A book to read. A fishing rod and some worms. A big
Hypermetropia is another visual disorder. It is also known as long-sightedness or far- sightedness. In this condition, the eye focuses better on distant objects than nearby objects, hence nearby objects appear blurred (this is just opposite to myopia). Physiologically, a person presenting this disorder has smaller eyeballs than the normal size or cornea with smaller
Myopia is a common visual deformity. It is also known as nearsightedness or short sightedness. In myopia, the eye focuses better on the objects that are nearer than the objects which are at a farther distance. In this visual disorder, a person has enlarged eyeballs or excessively curved cornea. This physiological defect alters the image
Image formation by an eye is based on the passage of light in the eye. It is an instant process. 1. Firstly, the light enters the eye and passes through the transparent cornea to the pupil in the centre of the iris. 2. Then, the adjustable lens and the fixed cornea focus the light rays
Pupil Both the eyes and the camera have a black dot in the centre. This black dot helps capture an image. In case of the eye, it is called the pupil which is an opening on the iris. It lets the light fall on the retina and acts as a regulator, i.e. it regulates the
Choroid is the middle layer located just after the sclera. Choroid is supplied with blood vessels and it forms the iris. There is a central opening in the choroid layer, the pupil. The main function of the choroid is to supply nutrients and oxygen to the sclera and the retina. The iris is a thin,
Benny goes to school every morning. He packs his school bag. He puts his books in it. Benny also puts in a pencil-box. The pencil-box has pencils and an eraser in it. He packs his box of colours too. Benny’s mother packs food in a tiffin for him. Benny’s father drops him at the bus-stop.
Benny is bored. His dad is busy with office work. His mom has to cook food for a family party. She has to clean the house too. Benny has no homework to do. He cannot watch television as there is no electricity. He stamps his foot in anger and says, “I am bored.” But no
Benny is very angry. In the morning, his baby brother tears his book. He clenches his fists. It is his favourite book. In school, his friend does not share his crayons. Benny gets angry again. In the bus, there is no seat for him to sit on. His face becomes red with anger. At the