Circulatory System research

How does alcohol affect your heart?

Alcohol puts stress on the heart to work harder to supply oxygen to the system and it constricts the way the oxygen is supplied. Research has shown that heavy, long term drinking damages your heart by weakening your heart muscle and causing a condition known as alcoholic cardiomyopathy. Some don't realize that drinking a large amount when you are not used to drinking can be just as dangerous. Excess quantities in the short and long term will damage your heart so limitations need to be set. The research has also shown that a lower risk of developing heart disease is based on moderate drinking; no more than two drinks per day for men and one drink per day for woman.

Vital Capacity

1. How does your vital capacity compare to others in the class? Describe some reasons why you think your vital capacity is what it is. Why are the highest and lowest vital capacities the way they are?
Brianna and Ashpreet both had a vital capacity of 2.4 while Kamalvir had 1.6. My vital capacity was 3.2. Some reasons why I think my vital capacity is what it is, is because I took a deep breath and then blew out. The highest and lowest capacities are the way they are is because it differs between gender, height, and weight.

2. How much air is in a usual breath? Why are our breaths the volume that they are?
In a usual breath there are 5ooml of air or half a litre Our breaths are the volume they are because our lungs adapt to how much air we need on a daily basis.

3. How is the mechanism of exhaling forcefully different than a usual exhalation? Why would practice at this via exercise/instrument playing/singing make you better at it?
The mechanism of exhaling uses more force because we are using more muscles blowing the air out of our bodies. During forced exhalation, as when blowing out a candle, expiratory muscles including the abdominal muscles and internal intercostal muscles generate abdominal and thoracic pressure, which forces air out of the lungs. Practice at this via exercise/instrument playing/singing because you can manage and control your breathing more.

Interim Reports

1. Provide an example of a experience (or more than one) where you felt successful in class
- A experience where I had felt successful was while I was doing the digestive system
project. I felt successful doing this project because as I was doing it I did note have to refer
to my notes as much as I thought I did. Also the biological molecule lab was another
activity I felt successful in because I was able to explain to myself what I was actually doing

2. Write about your work habits in class - if you look through your binder is there a lot of unfinished work? Have you handed in all your assignments? If not, why not? Provide evidence if possible.
- My work habits have been AMAZING if I do say so myself. I have finished all my work in
my binder with exceptions of a couple questions. Also I think I have handed I'm all my
assignments.

3. Have you had a chance to work collaboratively with other students in the class? How has that enhanced your learning? Or not?
-I have had the opportunity to work with other students in the class and I think it was
beneficial because when I wasn't able to understand something I asked my partner and
they were able to help me understand.

4. What goals do you have for Biology 12? What do you need to do to get there? If your goal is about a mark, please reframe that into the work/learning that you hope to achieve.
-My goals for Biology 12 are to get at least a B or a low A. I am going to study extra for my
tests and complete my projects that meets all the requirements.

Biological Molecules & Food Lab

Biological Molecules & Food Lab

1.)  A positive result for lipids (fats) is that the paper would be glossy and not as opaque. A positive result for starch is that it would turn black. The positive result for glucose is that it turns a yellow/ orangey color.

2.) The building blocks of a starch molecule is made up of a glucose molecule.

3. Carbohydrate molecules are made up of glucose molecules, so when the carbohydrates are heated up they break up

4. The four stages of digestion are ingestion, digestion, absorption, and elimination. Ingestion is the process of putting the food or drink into your mouth and digestion begins as soon as you start chewing the cookie. Mechanical digestion is when you use your teeth and tongue to chew your food until it id small enough to swallow. The little ball of food that you swallow is called a bolus which is covered with saliva in order to make the journey easier. Chemical digestion occurs because of an enzyme found in your saliva which helps speed up a chemical reaction. This enzyme is called amylase and it breaks down the bolus by breaking down the complex carbohydrates into simple carbohydrates or sugars. Once the cookie is swallowed it passes through the pharynx which is where the airway passage and digestive system meet. The airway tube is covered by a flap of flesh called the epiglottis. This flap covers the airway for when you swallow. The cookie then makes it way to the esophagus which connects the pharynx to the stomach. Food is then propelled through by a process called peristalsis which is caused by the contractions of muscles. Once in the stomach gastric juices called HCL, mucus, and pepsin break down the bolus into a liquid called chyme. There are two muscles at each end of the stomach called sphincters; these are round muscles that open to let things through. Once the chyme makes it through the sphincter it enters the small intestine and the second stage of digestion is complete once food leaves the duodenum, the first meter of the small intestine. Once through the duodenum digestion is complete and nutrients can be absorbed in the small intestine. The small intestine is covered in little folds called villi which provides more surface area and increases the rate of absorption. It takes about five to six hours to move from the small intestine into the large intestine. The large intestine takes undigested materials from the small intestine and reabsorbs water and minerals. The process of peristalsis occurs here once again and this time it takes about twelve to twenty-four hours. Any undigested materials leaving the large intestine are now considered as feces. This waste is stored in the rectum until it can be eliminated through the anus.

Digestive system shirts

YAAAY Digestive system shirts! Can't wait to wear these at playland.. 😞

Water Trick Video Response

After watching the water trick video we had trouble speculating if it was true or false. We came to the realization that it was false because gravity would pull it down. The hydrogen bonds could hold together but just like the penny when it started getting higher gravity took over. The water in the glass would not be able to withstand the power of the gravity.