Showing posts with label in. Show all posts
Showing posts with label in. Show all posts
Wednesday, March 18, 2015
BRIEF REVIEW OF RECEPTORS IN HUMAN BODY
RECEPTORS IN MAN:
Receptors are the sensory organs which receive a stimulus. Following are the main receptor organs in man:
- Organ of sight.
- Organ of hearing.
- Organ of smell.
- Organ of taste.
- Organ of touch.
Sight:
The eyes are the most marvelous of the sense organs as they make us aware of various objects around us, nearby and far away. When we see a tree we don’t have to touch it or climb its branches in order to know what it is like. With normal vision we can reach out as far as our eyes can see and are thus becoming aware of events and circumstances around us. These eyes are the great bliss of Almighty Allah.
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| Sight receptor in human body |
Ears:
The ears are the most amazing and spectacular organs in our body. These are one of the best endowed by Allah. The ears lend a hand us to hear everything we want. There are frequency ranges, but human ear can only hear in the frequency range between 20Hz to 20,000Hz. This is called audible frequency.
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| hearing receptor in human body |
Smell:
The organ of smell lies in the nasal cavity above mouth. It is also called the olfactory organ and its sensitive cells are supplied by the branches or the olfactory nerve from the brain. The incoming air currents carry the smell particles of substances into the nasal cavity which arouse the sensitive cells in the organ of smell. The olfactory nerve carries the sensation to the brain, which determines the nature of a substance emitting the smell.
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| smell receptor in human body |
Touch:
There are encapsulated nerve endings in the skin, which respond to slight pressure on the skin. The skin responds to heat and cold also. Experiments have shown that the spot in the that respond to cold don’t respond to heat and vice versa. It is also known that any stimulus that affects the free and exposed nerve endings produce the sensation of pain. Some sensory receptors are placed deeper in the tissues and are not stimulated unless the tissues above are firmly compressed.
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| touch receptor in human body |
Taste:
It is generally believed that the entire tongue is the organ of taste, but it is not so. The tiny organs of taste are located on the surface of the tongue. These are called the taste buds. They are spherical in shape and microscopic in size. A taste bud consists of a group of cells that are supplied with nerve endings from the nerve that penetrates the inner part of the mouth cavity. There are four kinds of taste buds, each kind specified to seek a particular taste, i.e. sweet, salty, sour and bitter. Those for salty taste are situated along with those for bitter taste on the side of the tongue and for sweet taste at the tip of the tongue.
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| taste receptor in human body |
Tuesday, March 17, 2015
Tune in to Toon Books
Toon Books puts out wonderful graphic books for beginning readers. This batch are all 2011 Cybils nominees in the Easy Reader/Early Chapter Book category.*
*I am a first-round panelist in this category, and this review reflects my opinion only.
A Walk in London
A Walk in London is jammed with interesting tidbits. Did you know:
Buckingham Palace has its own post office?
More planes fly over London than any other city in the world?
A whisper on one side of St. Pauls Cathedrals dome can be heard 105 feet away?
Rubbinos lively illustrations are equally impressive, filled as they are with detail upon detail. The spread showcasing St. Jamess Park focuses on tourists taking photos and feeding the water fowl in the lake, while in the background cricket players are at bat. A foldout of the Thames gives readers a panoramic view of the many buildings along both river banks. Theres way too much info to absorb in one sitting, so, like the city itself, this book bears repeated visits.
A Walk in London
by Salvatore Rubbino
Candlewick Press, 40 pages
Published: 2011
Monday, March 9, 2015
Large Sioux Indian Skelelton Uncovered in Burial Mound in Southern Illinois
Large Sioux Indian Skeleton Uncovered in Burial Mound in Southern Illinois
Sioux Indian Pictograph on a bluff overlooking the Illinois River, in Pike County, Illinois
Twelfth Annual Report of the Bureau of American Ethnology of the Smithsonian Institution, 1894
On the spur of the ridge upon which the Welch mounds of Brown county, hereafter noticed, are situated and about midway between them and Chambersburg, in Pike county, is a group of circular mounds, possibly the work of another people than those who built the effigies. They are mainly on the farm of Mr. W. A. Hume, who assisted in opening eight of them, of which but two are specifically noticed here...
The other, situated on the point of a commanding bluff, was also conical in form, 50 feet in diameter and 8 feet high. The outer layer consisted of sandy soil, 2 feet thick, filled with slightly decayed skeletons, probably Indians of intrusive burials. The earth of the main portion of this mound was very fine yellowish sand which shoveled like ashes and was everywhere, to the depth of from 2 to 4 feet, as full of human skeletons as could well be stowed away in it, even to two and three tiers. Among these were a number of bones not together as skeletons, but mingled in confusion and probably from scaffolds or other localities. Excepting one, which was rather more than seven feet long, these skeletons appeared to be of medium size and many of them much decayed.
Twelfth Annual Report of the Bureau of American Ethnology of the Smithsonian Institution, 1894
On the spur of the ridge upon which the Welch mounds of Brown county, hereafter noticed, are situated and about midway between them and Chambersburg, in Pike county, is a group of circular mounds, possibly the work of another people than those who built the effigies. They are mainly on the farm of Mr. W. A. Hume, who assisted in opening eight of them, of which but two are specifically noticed here...
The other, situated on the point of a commanding bluff, was also conical in form, 50 feet in diameter and 8 feet high. The outer layer consisted of sandy soil, 2 feet thick, filled with slightly decayed skeletons, probably Indians of intrusive burials. The earth of the main portion of this mound was very fine yellowish sand which shoveled like ashes and was everywhere, to the depth of from 2 to 4 feet, as full of human skeletons as could well be stowed away in it, even to two and three tiers. Among these were a number of bones not together as skeletons, but mingled in confusion and probably from scaffolds or other localities. Excepting one, which was rather more than seven feet long, these skeletons appeared to be of medium size and many of them much decayed.
Reconnect to Yourself through Meditation and Reiki Practices in Canberra
Do you find yourself completely exhausted at the end of your day? Do you go to bed and realise that you havent had a moment to yourself in a long time? Most of us go about the daily demands of work and home life packing our minds full with tasks that take up all of our attention. Some of these things are a choice, such as choosing to be distracted with phone calls, emails, social media, etc., and it is in these moments that you can choose to relax your mind and connect to your inner self through meditation and Reiki training in Canberra.
One of the side effects of all the distractions that we deal with from moment to moment is that we lose our ability to focus. How long does it take for your mind to wander when you are listening to a friend’s story or when your child is telling you about his or her day? Many peoples minds trail off to other thoughts within 15-30 seconds. Wouldnt you like to be in the here and now with the people in your life and be in control of your mind? In Canberra, you can alleviate this problem by training in meditation and Reiki.
Stress is one of the leading causes of mental and physical health problems. Stress causes depression, weight gain, heart problems, and a myriad of other health problems. There is a natural way to deal all the stress in your life and that is through meditation and Reiki practices in Canberra. When you are trained to still your mind and let go of most of the stress that you encounter, then your health will improve tremendously. Meditation is not a miracle cure, but when used correctly and consistently, you will notice right away that your mind and body feel more relaxed and that you have more energy, focus and patience.
Too many of us speed through our day going from one task to another and never taking a few moments to find peace with our thoughts. When you learn the art of meditation, you can reconnect to your inner self and become healthier, happier and more productive. See and feel the benefits of being present in the moment and being able to focus. Learn more about meditation and Reiki training in Canberra by visiting The Inside Out Effect at http://theinsideouteffect.com.au/.
One of the side effects of all the distractions that we deal with from moment to moment is that we lose our ability to focus. How long does it take for your mind to wander when you are listening to a friend’s story or when your child is telling you about his or her day? Many peoples minds trail off to other thoughts within 15-30 seconds. Wouldnt you like to be in the here and now with the people in your life and be in control of your mind? In Canberra, you can alleviate this problem by training in meditation and Reiki.
Stress is one of the leading causes of mental and physical health problems. Stress causes depression, weight gain, heart problems, and a myriad of other health problems. There is a natural way to deal all the stress in your life and that is through meditation and Reiki practices in Canberra. When you are trained to still your mind and let go of most of the stress that you encounter, then your health will improve tremendously. Meditation is not a miracle cure, but when used correctly and consistently, you will notice right away that your mind and body feel more relaxed and that you have more energy, focus and patience.
Too many of us speed through our day going from one task to another and never taking a few moments to find peace with our thoughts. When you learn the art of meditation, you can reconnect to your inner self and become healthier, happier and more productive. See and feel the benefits of being present in the moment and being able to focus. Learn more about meditation and Reiki training in Canberra by visiting The Inside Out Effect at http://theinsideouteffect.com.au/.
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