Worm Inside Eye

 

A Mouth Full Of Maggots

 

 

The Structure & Function of Eyes
 Eye movement simulator (Shockwave) : http://cim.ucdavis.edu/EyeRelease/Interface/TopFrame.htm
Blind spot experiment (Purdue University Visual Perception Online Laboratory)
http://www.psych.purdue.edu/~coglab/VisLab/BlindSpot/blindspot.html
Other vision Web links:
Vision Research at Vanderbilt (Vanderbilt Vision Research Center)
http://vision-research.vanderbilt.edu/
Common Vision Problems
http://www.preventblindness.org/sitemap/index.html

Color images of lab manual figures
Figure 1:
Figure 2:

Other images:
Fly eyes:

The number of ommatidia per eye varies from species to species with only a few in ants, to 800 in fruit flies, to as many as 10,000 ommatidia in the compound eye of the horsefly. The compound eye provides information about patterns in the environment and is very good at detecting movement.
The world looks different to an insect because of the compound nature of its eyes and also because it is sensitive to different wavelengths of light than our eyes are.  For example some insects can see into the UV.  Features of plants that are invisible to our eyes are apparent to insects because the patterns of the features are visible in the UV.


 

Human Body

Today we are going to learn about the names of the body. Some of the words here are not listed on the picture below.

Puberty is the period of human development during which physical growth and sexual maturation occurs. The exact meaning for puberty is the period during which adolescents reach sexual maturity and become capable of reproduction. But it basically means growing up, maturing and developing. Another word for puberty is adolescence.
Puberty is also a stage of confusion for a child. Not an adult yet, but not a kid anymore. I remember when I had my first menstruation, I was at the school when I saw a blood on the back of my skirt, I was so confused at that time and didn’t know what to do. My older girl classmates accompanied me to the rest room and helped me wash the stain. When I went home, my mother was at work, it was only the housemaid that was there. I told her about it and she immediately took me to the bathroom and helped me showered, then she told me to jump three times. I forgot the reason why (perhaps an old myth), I just followed her and jumped.
It is better for parents to prepare their children for the changes they will encounter during their puberty stage, so they will know what to expect.  Offer some information why girls and boys are different, and why girls have started to develop breasts. Teen years is the age of turmoil and it is best to prepare your child and yourself for the bumpy ride ahead.
Signs of Change:
Girls:

• Budding of breast
• Growth of pubic hair
• Possible hair growth under arms and on legs
• Hip widening and buildup of fat
• Faster growth of limbs
• Arrival of  first menstruation

Boys:

• Enlargement of the testicles
• Growth of pubic hair
• Hair growth on arms, legs, face
• Faster growth of limbs
• Broadening of shoulders
• Weight and muscle gain
• Cracking and deepening of voice
• Frequent bouts of erection

How to Find the Right Bra

Buying a bra may seem simple but it is actually quite complex. First and foremost it is essential that you know your correct size. A properly fitted bra is essential for both comfort and posture and is especially important during the teen years when your body is growing.

The Importance of Knowing Your Bra Size

A poorly fitting bra can cause back problems, muscle tension, and even headaches. Since teens are still growing the strains caused by an improperly fit bra can lead to life long problems with posture and back pain. To ensure that you are wearing the right size bra you should be fit by a lingerie consultant once a year or after every noticeable growth spurt.

Different Bras for Different Reasons

After you have the right size the next thing to think about is why the bra is needed. Is it for support, coverage, comfort or athletics? Bras come in a variety of fits and fabrics. There are different styles of bras designed for specific body types, fashions and activities. No one bra can do it all!

First/Training Bras

Training bras are for young girls who have started to develop breasts but do not yet fit the standard bra sizes. A young girl who has started to develop breasts should wear a training bra but there is no harm in letting a girl get one before there is a real need. Remember, training bras are intended for girls of any age who have started to get breasts and who are not yet able to be fitted with a regular bra. If your breast size warrants a full fitting bra you should wear one, even if you are very young.

Light Support Bras

Light support bras usually have no under wire and are good for g irls with smaller breasts. They are less constricting than full support bras and many girls feel that they are more comfortable. Because they are wireless they offer less shaping than other bras and are most flattering on trimmer figures. These bras come in padded and unpadded versions, which you choose is really a matter of personal preference.

Full Support Bras

Full support bras usually have an under wire or plastic boning holding them up. They can be worn by girls of any breast size and are a must for those with larger cup sizes. These bras offer a shapely cut and have a structured build. These also come in padded or unpadded version and are flattering on any figure type.

Push Up Bras

Once called padded bras, push up bras are designed to show off cleavage. These bras lift the breasts and add shape to them with extra padding. Some more innovative push up bras use silicone inserts or water sacks to imitate the fullness of a natural breasts. They are said to lift and separate creating a full cleavage look on breasts of all sizes. These bras always offer lots of support.

Sports Bras

Of all the bras the sports bra is probably the most important one for growing teens to have. Sports bras stop the breasts from moving during athletic activity. Breast tissue is very delicate and growing breast tissue needs to be protected during high impact exercise. Even girls with smaller breasts should invest in a good sports bra if they take physical education or participate in sports.

What Teenage Girls Need to Know About Breast Development and Health...?

"Come on grow!" said a 15-year old girl I knew when I was a teenager. She was giving her breasts a pep talk as she looked hopefully down her blouse. Teenage girls, and grown women, have long worried about their breasts or lack of breasts. Some girls like the one above, worry about their breasts not growing enough, while other girls worry about having breasts that are too large.
Breasts come in all shapes and sizes. Nipples can be large or small, they can stick out or be inverted. Some girls have breasts that are not the same size with one being large while the other is small. All of these are perfectly normal.
Some girls develop breasts early at eight or nine, while other girls are still waiting at 14 or 15. While this is normal, it is often hard for the girl who is 13, 14, or 15 to understand why her friends have developed breasts and she has not.
Breast maturity can occur very slowly, or almost overnight for some girls. The important thing to remember is that everyone is different and each girl will develop breasts in her own time.
How Big Will My Breasts Grow?
How big breasts eventually grow depends on a couple of factors:

• Heredity plays a key role in the size and shape of breasts.
• The amount of fatty tissue in the breast is a major factor in how large or small breasts will become; however, this has little to do with body weight.

Many girls try to increase their breast size by exercising the pectoral muscles (the muscles under the breasts). While exercising the pectoral muscles might increase the firmness of that muscle, it has nothing to do with the amount of fatty tissue in the breasts and will do little to increase breast size.
Do I Need to Wear a Bra?
Wearing a bra is less popular than it once was, and is basically a personal decision. If you feel comfortable without wearing a bra, then don't wear one. But if wearing a bra makes you feel better, or feel you look better, then wear it. If you are going to wear a bra, it's a good idea to go to a large department store and be fitted by the sales lady. A properly-fitted bra will be comfortable and will not cause red marks on your shoulders or around your chest.
Why Do My Breasts Swell and Feel Tender?
Swelling and tenderness of the breasts just before your menstrual cycle is normal for many girls and women. This happens because breast tissue tends to retain fluid before your period starts. Even if you don't normally wear a bra, wearing one when your breasts are swollen, tender, and feeling extra heavy might help to relieve some of these symptoms--just be sure that the bra is well-fitted.
Will I Get Cancer If I Bump My Breast or Something Hits My Breast?
While getting a hard hit to your breast may feel pretty bad, it won't cause breast cancer. Your breasts may bruise, but unless the bruising is severe you should have no cause for concern (and it still won't cause breast cancer).
Help! There's Hair Growing On My Breasts
Don't worry, you are not turning into the hairy-chested lady at the circus. Many, many girls and women have some hair on or around their breasts. Some girls have only one or two hairs, while others have many more. If it is an issue that you are not comfortable about, talk to your health care provider.
What's Wrong With Me? I Have a Discharge Coming Out My Nipples
This can be quite scary, but unless the discharge has pus or blood in it, or if it is brownish in color (most likely caused by an infection, although blood can indicate cancer), it is probably nothing to worry about. It is normal to have a nipple discharge that is thin and milky, clear, light green, grayish, or light yellow. Again, see your health care provider if you are unsure about any nipple discharge that you may experience.
I Have a Lump in My Breast. Do I Have Breast Cancer?
Lumpy breasts are very common in girls and women. In most cases, breast lumps are not a sign of breast cancer. Teenagers, both girls and boys, will often feel a lump called an "adolescent nodule." An adolescent nodule is a sore, swollen spot just under the nipple that will go away without any medical intervention. Although breast cancer is very rare in teens, anytime you feel a lump it's a good idea to have it checked by your health care provider.
Learning and practicing monthly breast self-exam is an important step that you can take to protect your health. Starting monthly breast self-exam as soon as you begin to menstruate will help to make it a lifelong habit. Breast cancer sounds very scary, but when detected early most breast cancers have a survival rate of over 90 percent.

Good Luck...All