Parts of the Ear ( Only fourth )

There are several parts of the ear, which are divided into the outer, middle and inner ear sections. Each part of the ear is essential to the overall function of the organ and your brain’s ability to interpret the sounds your ear collects.

The different parts of the ear allow the body to capture sound waves out of the air, translate them into vibrations and send these signals to the brain to be interpreted. If any portion of this system is harmed, it can be difficult to hear, or the patient can lose hearing in that ear all together. Understanding the inner workings of your ear can help you understand what you need to do to encourage optimum ear health and safety.

THE HUMAN EAR!!! (Only fourth and third)

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The Human Eye!!!

Componentes del universo!!! asignatura cuarto Grado sociales!!!

THE HUMAN EYE!!! SCIENCE

The human eye  is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rodand cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.

Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of thebody clock.

HAPPY BIRTHDAY ISABELLA

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Valentine's Day

Valentine's Day is celebrated on 14th February, the feast day of St. Valentine. It is a traditional celebration in which lovers, partners and married couples express their love and affection for each other. In some countries it is known as The Day of Lovers or The Day of Love and Friendship.

These days it is celebrated with the exchanging of cards known as valentines, with patterns on of hearts or Cupid; but with the rise of the Internet the custom of exchanging virtual cards has also increased. Common as well is the tradition of giving roses or tokens of love.

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Body Parts (This is ~ / These are ~ )