math in physiology

Many people think that life science has no correlation to mathematics but in actuality, subjects such as physiology and anatomy deal with math more than expected. I have had to personally use math in physiology when we looked at slides through microscopes and measured the organisms with a ruler. We had to convert the measurements from centimeters to millimeters. For classwork we have also done some assignments that require measuring angles of movements such as range of motion of the ankle. Then, we took the average of our degrees and put it in a average range of motion graph. There are many other examples of mathematical uses in life science such as the rate of something. Doctors may need to know someone's heart rate or rates of cell division. A lot of measuring is done in life science. Overall I think that there needs to be some knowledge of math in order to work in life science.

current event 2

http://bodyodd.msnbc.msn.com/archive/2008/10/02/1480391.aspx

Bad smells can give you nightmares

This article was about how different smells result in positive or negative moods or whether a person will have a pleasant dream or a nightmare. I was surprised to learn that different smells can recall good or bad memories which can cause nightmares at night. Some scents can even trigger arousals in both men and women as well. This is because the nose can pick up over 10,000 scents at the same time. Maybe I will try sleeping with a nice scented candle in my room tonight.

cells and tissues

Cells are the basic organizational unit that make up all living things. It is the smallest form of unit that make up larger parts of the human body. Humans are multicellular which means that we are made up of countless cells whereas bacteria is unicellular because it is made up of only one single cell. There are many different types of cells such as eukaryotic cells and prokaryotic cells. Tissues are a group of cells that perform the same or similar function. It is the level of unit that are larger than cells but smaller than organs. There are also many different types of tissues such as connective tissues, muscle tissues, and neural tissues. Connective tissues hold together other organs. For example, bones are tissues that hold together and support other parts that make up a body structure. Muscle tissues make up the shape of a body. Neural tissues are tissues that relate to the brain and the nervous system. There are also other types of tissues that contribute in the functions of an organism.