Cody Coleman Tuesday Dec.18/07 2/3

Reveiw of the day

Reveiwed worksheet {due thursday before the test}
Recaped overveiw of RS
Cilia overveiw
Looked at mechanism of breathing
Gas, transport, exchange in respiration
Questions

Opinions

Respiration is one of many amazing things that the bopdy does for you for free and you don't have to even work for it but really you because its your body. I find this unit kind of interesting but it is difficult to understand if you don't pay attention. The one thing i don't get is how your body can move the diaphram to create a sort of vaccum to carry air in and out of the body. I always thought you sucked air in on your own will.

Additional

I went on google.com and found so really interesting facts on respiration but i wont give them all to you because that would make people stop asking questions.

• Central to the human respiratory system, they breathe in between 2,100 and 2,400 gallons (8,000 and 9,000 liters) of air each day—the amount needed to oxygenate the 2,400 gallons (9,000 liters) or so of blood that is pumped through the heart daily.
• An adults lungs cotain 600 million alveoli

December 7, 2007 Jessica Eddy 3/3

Class Review

- Got prepared for lab.

- Started lab for dissection of the heart.

Thoughts And Opinions

At first, the heart looked really disgusting!! It was full of fat and not what a heart was supposed to look like, well what I thought. It was really tough to get through, tougher than I thought. The muscles actually work I guess. It amazed me by how different the heart looked from the pictures that we got. It was completely different!! Overall, it was a fun class and I learned a lot from it.

Additional Insight

http://www.pbs.org/wgbh/nova/heart/pioneers.html

One of the first surgeons to use these improved techniques to gain access to the heart was Dr. Dwight Harken, a young U.S. Army surgeon. Many of Harken's patients were young soldiers evacuated from the European front with shell fragments and bullets lodged inside their hearts. To leave the shrapnel in was dangerous, but removing it was almost surely fatal. Harken began operating on animals, trying to develop a technique that would allow him to cut into the wall of a still beating heart, insert a finger, locate the shrapnel and remove it. All of his first 14 animals subjects died. Of the second group of 14, half died. Of the third group of 14, only 2 died. Harken felt ready to try the technique on humans. All of his patients survived, proving that the human heart could be operated upon.

It was very complicated to find all of the valves and parts of the heart when I did it on a sheep heart. I can't even imagine how hard it would be for a doctor to do an open heart surgery! Especially so long ago with no technology. That is impressive.

Kayleen Fahrlander Thursday Dec.6th 3/3

Class Summary
-Review heart sounds from last class
-Watch short movie clip (of a heart beating)
-Read pages 331-334 (exercise adjustment) and 338-339 (lymph system)
-Blood Assignment due Wednesday (Dec.12th)
**Homework**-Make labels for tomorrow's heart dissection (put tape over them)

Thoughts and Opinions
The more I think about the heart, the more grossed out I get about it. There are so many different parts and something could easily go wrong and stop your heart from beating. After going to bio class, I'm more aware of my heart beating and it makes me really uncomfortable. To me, this unit is a lot more interesting and useful than cellular respiration/ photosynthesis ever will be. I'm really excited about the heart dissection tomorrow!

Above and Beyond (Heart Facts)
-According to German researchers, the risk of heart attack is higher on Monday than any other day of the week.

-By the time you turn 70, your heart will have beat some two-and-a-half billion times (figuring on an average of 70 beats per minute.)

-Women's hearts beat faster than men's.

Sarah Nov. 29 3/3

- 1st we went over the assignments from last day
-sandwich story
-thought lab
-jimmy digestion
-experiment
-started next section on circulatory system
-did notes
-got notes sheet

This class wasnt that bad. We didnt do a whole lot and i didnt have to worry about homework cause i had all my assignments done. So far the human body stuff sucks and theres a lot of dif things you need to know. Like we learnt the functions of the circulatory system
-waste removal/transport gas, nutrients
-immune system
-blood clotting/healing
-body temp
you need all these to be in homeostasis which is internal balance. Thast all we really learned which wasnt a whole lot so class wasnt all that bad.

http://hes.ucf.k12.pa.us/gclaypo/circulatorysys.html#AMAZING%20FACTS

This site claims to have amazing fact about the circulatory system. They're not that amazing but i though I'd share.

-One drop of blood contains a half a drop of plasma, 5 MILLION Red Blood Cells, 10 Thousand White Blood Cells and 250 Thousand Platelets.
-You have thousands of miles of blood vessels in your body. "Bill Nye the Science Guy" claims that you could wrap your blood vessels around the equator TWICE!
-Keep your heart healthy...it's going to have to beat about 3 BILLION times during your lifetime!