Wednesday, November 18, 2015

Monday Wellness Reflection

11/16/15
Badminton- Monday Wellness Reflection


The topic that Jennifer and I chose our Monday Wellness was badminton. After weeks debating over what our topic should be from coffee to exercise videos to freezer meals, we finally decided on the idea of recreational sports. One sport that we both have in common is badminton, since we both play on the school badminton team. Jennifer plays varsity singles while I play varsity doubles and singles (depending on the slotting).
Badminton is a great form of exercise. During the season we play 2 hours a day and I train twice a week outside as well. It's an intense game due to all the running and sudden direction changes; it engages all your muscles when you have to propel yourself across the court in about 3 steps every direction. With all that movement, the respiratory system gets a great workout and increases in function to improve the exchange between carbon dioxide and oxygen in the lungs. However, the most interesting fact that I learned was that badminton burns 480 Calories per hour, which was a lot more than 398 from jogging. 
One other thing I learned was that badminton is the most played sport that is not an NCAA sport. Tons of people play badminton; it’s a lifelong sport that creates lifelong friends. A benefit to badminton is its social aspect. It requires more than one person to play, whether it be a singles opponent or a doubles team. Personally, when I switched over to doubles the most challenging part was communicating with my partner. You need to know who gets what shots and when, otherwise you end up colliding in the middle of a rallying by going for the same shot. My partner and I have to practice constantly in order to perfect that form of connection between partners, and we’ve become extremely close due to all the hours practice that we’ve been through together. But after you get the hang of understanding how the other moves and thinks, there is an extremely close bond between you and your partner because of the almost telepathic form of communication developed between the two of you.
A stereotype that surrounds badminton is the lack of physical exertion. However, I get the most tired from playing badminton compared to some of my other activities such as dance and marching band; within the first few minutes of footwork and warm up I am normally winded and perspiring. Badminton requires constant, high-energy movement throughout the entire game, since getting the point relies on how fast you can react to your opponent’s shots. It’s also mentally exhausting because you have to be laser- focused on your opponent: how they play, what shot they make, where to hit the bird to win the point. Each type of game requires a different technique and shot placement, which takes hours of practice to perfect. Now imagine that on top of sprinting around a court and the physical exertion of hitting the shots. Tiring, right?

Our topic was not just to show the benefits of badminton but rather the benefits to any sport that might be overlooked due to the “easy” nature of the game. While some recreational activities might seem easy, there is a lot of underlying skills and work that are necessary to be at least a decent player, which we hope we exposed during our presentation and class activity. We also hope that we disproved some myths about badminton and encouraged more people to try the sport. Getting everyone involved proved to be difficult; however, I think we did pretty well with providing the basics to keep everyone engaged. It seemed like everyone enjoyed the activity and getting to hit around with friends.

Thursday, November 12, 2015

Sheep Heart Dissection Lab

11/12/15
Sheep Heart Dissection Lab
Question 7, 10
Question 12

Questions 5

  1. The pericardium is a double membrane sac that secretes fluid to lubricate the heart, as it reduces friction as the heart expands and contracts. The visceral layer is part of the heart wall while the parietal layer attaches to the body.
  2. Arteries are much thicker than veins, which we observes as we cut through the pulmonary vein to get to the left atrium. The veins were marginally thinner, almost like paper, and much more elastic than the arteries which consisted of more smooth muscle. 
  3.  The auricle is hollow and is visible on the outside of the heart. It is an extension of the atrium, which allows the atrium to hold more blood/ increase the capacity.
  4. Externally, the ventricles are not visible at all on the outside of the heart. However, atria, on the other hand, have an extension called auricles, which are ear-like structures on the outside surface of the heart. Surrounding the left side of the heart, there is a thicker layer of myocardium because it requires more force to expel the blood to the entire lower half o the body than it does to push the blood to the lungs. 
  5. See picture above
  6. The anchoring of the heart valves by the chordate tendinae and the papillary muscle is important to heart function because without these, the valves would not be functional, causing a back flow of blood. The chordate tendinae and the papillary muscle are used to close the valve and without being anchored they wouldn't be able to flex and contract and close the valve.
  7. We see the inside of the left atrium, which a hollow cavity. Looking down, we can see the bicuspid valve, which is held to the walls by chordate tendinae and papillary muscles. see pic above
  8. The semilunar valves are utilized to prevent the back flow of arterial blood from re-entering the heart as the heart pushes blood out to the lungs and the rest of the body. The pulmonary semilunar valve helps stop any leakage of blood as it is pushed to the lungs while the aortic semilunar valve prevents back flow as blood is pumped to the rest of the body.  
  9. a) If there is a defect with the valves on the right side of the heart, the blood would leak back through the valves. Because the blood on the right side of the heart comes from the rest of the body, backflow and gravity would pull the blood back down to the feet and ankles, causing swelling.
    b) If the valve disease existed on the left side, one could expect to see problems with the oxygen exchange in the lungs, as the blood would backflow to the lungs. This would probably affect the rest of the body as well because the blood would not be quite as efficient at providing the rest of the body with oxygen.
  10. After we cut the heart into cross sections, we had a clear view of the left atrium to the left ventricle. The bicuspid valve is functional due to the chordate tendinae that hold the valve flaps. From the left ventricle, we found an opening to the aortic semilunar valve. Although we found this opening, it was mostly obscured from our view; however, it possessed a similar structure to the biscuspid. see pic above
  11. The left side of the heart contains a thicker myocardium layer due to the extra force need to the push the blood to the rest of the body, as the right side of the body only needs to push the blood to the lungs, a lesser distance in comparison. The right side contains deoxygenated blood from the rest of the body while left side contain oxygenated blood from the lungs. 
  12. see picture above

Wednesday, November 11, 2015

Unit 3 Reflection

11/11/15
Unit 3 Reflection
  Unit 3 was all about the circulatory system. It included the heart, cycle of blood through the heart, heart diseases, and a brief segment on the respiratory system. The cardiovascular system works flawlessly with a combination of the heart, vessels, and accessory organs such as the lungs, liver, and kidneys. Starting in the heart, blood comes in through the super/inferior vena cavas into the right atrium. It then flows through the tricuspid valve into the right ventricle, where it is pushed through the pulmonary semilunar value to the lungs. After going through the lungs, the blood returns through the pulmonary vein into the left atrium down to the left ventricle through the bicuspid (mitral) valve. From there it goes through the aortic semilunar valve, out through the aorta to the rest of the body.
  Cardiovascular health is the health of the heart and the blood vessels. To promote cardiovascular health, one can exercise, eat right, and monitor their blood pressure and cholesterol levels. In the case that maintain a healthy lifestyle is not met, one can develop problems such as atherosclerosis, which could lead to heart attacks or strokes due to the blood clots in the vessels.
  After this unit, I definitely am more informed about the circulatory system than I was before. I was surprised how much time we spent on the dysfunctions of the circulatory system because it never occurred to me how major the topic was. A little bit more time about the circulatory system functioning in there rest of the body might have added some helpful, additional information to the unit.
  This unit went a lot smoother than the last one. The content was easier to understand than the last unit because this included more rote memorization. I feel that my strengths lie in my ability to memorize and apply that information to problems, which became particularly helpful with all the terms this unit. One weakness I have is how quickly that knowledge is applied to certain problems. Especially on calculations, which haven't popped up, my speed decreases often leading to time issues. However, this has yet to become a problem during this course.
  My unit 2 health goals are still in progress, as they should be. I have been getting a tad bit more sleep due to the end of the band season, and I look forward to being able to start up my spring sport again. Also, I got through the first round of college applications, which has made the process a bit more relaxed than before. I hope that I will continue to improve on my sleep as well as my eating habits.
Our chalk diagram of the heart
Sheep's heart dissection

















Taking a look into the sheep's right ventricle