Rat Dissection

      This dissection was probably they most fun and grossest one we did so far, smell was okay the first day but the second day the rat smelled 10x worse. The rat dissection helps us understand more about our anatomy because the rat is bilaterally symmetrical like us, just like taking a look at our insides. I learned that rats use thier tails for balance and regulate thier body temperature, also rats like to pee everywhere because thats how they mark they territory. From opening thier stomach figured out that rats eat lots and lots of dirt. Personally this was probably the best dissection we did the whole year because it was gross yet so fun at the same time.

DISCUSSION QUESTIONS

 1.) The hands are the best because it possesses the best motor skills and prescion.

2.) So we know what we are seeing when we look at the diagrams.

3.) The rats tail helps with balance and control the rats body heat.

4.) Vibrissae help with sensing things around them

5.) It has two matching sides when cut directly in half

EVEN MORE DISSCUSION QUESTIONS

1.) A sphincter normally maintains constriction of a natural body passage or orifice

2.) The large intestine absorbs water, nutrients, and salts. The smaller one absorbs carbohydrates, protien, fats and minerals. Small also helps with digestion, large helps with reabsorb

3.) Liver helps with detoxification, protien synthesis and production of biochemicals nessecary for digestion.

4.) Duodenum is Latin for 12 fingerlengths.

5.) In omnivores and herbivores it helps with the digestion of cellulose.

BUT WAIT THERES MORE

1. The precardium prevents the heart from over expanding when the blood volume in the heart increases.

2.) The fuction of the spleen is to remove old red blood cells and remove and restore WBC's

3.) the main function of the diaphragm is to help move air in and out of the lungs.

4.) The atrium collects blood from the veins that are connected to it. The ventricles uses the squeezing actions of muscles to pump blood out of the ventricles

5.) It's thicker because the left ventricle pumps blood out at a higher pressure

6.) They both produce gametes, they both have storage system where they keep thier eggs and sperm.

7.) The kidneys regulate the bodys fluid volume, mineral compostion and acidity by excreting and absorbing water.

8.) The thyroid , thymus and adrenal gland are part of the immune system. The thymus gland produces T-Cells, the thyroid controls how quickly the body uses energy, also makes protiens. The adrenal gland is mainly responsible for releasing hormones on response to stress.