Unit One Reflection
This unit was about the relationship between the anatomy and physiology and the different levels of organization, such as molecules, organs, and tissues. The overall themes of this unit were understanding the different types of tissue and their functions within the human body. The essential understanding for this unit was truly going in depth with the shapes, functions, and location of the following tissues: epithelial, connective, muscle, and nervous.
During the duration of this unit, we learned about the different tissue types and their varying functions. Epithelial tissue, covers the entire body and protects the organs. Also, there are different variations of the epithelial, like simple, one layer of cell; stratified, which is more than one layer of cells; and pseudostratesfied, which is a mix of the two. The cells themselves come in different shapes as well: squamous, cuboidal, and columnar. Connective tissue binds together, supports, as well as strengthens other tissues in the body. They are made up of two main parts, extracellular matrix and cells. The cells of the connective tissue include: fibroblast, non-rigid fibers such as collagen and elastin; macrophages, cells that eat bacteria; adipocytes, fat storing cells; and mast cells, which release histamine in inflammatory response. Muscle tissue, has three different types: skeletal, which functions voluntary movement; cardiac, which propels blood into the circulatory system; and smooth muscle, which is responsible for perastalsis which aids digestion. Finally, we learned about nervous tissue which transmits electrical signals from sensory receptors to effectors. There are two different types of nervous cells: nuerons, which are excitatory cells, and supporting cells or nueroglial cells.
Sadly there were things that I struggled with during this unit. I was not very good at identifying the different types of tissues, like the simple, stratified, and pseudostratesfied as well as the cuboidal and squamous. Some of the images were hard to identify the clear difference and it made it harder to make a clear difference between the two. In the next unit, I will want to start quizzing myself in order to be able to make sense of the clear differences between two similar cells and study much more in order to fully understand the content being taught. In the real world, much of this unit relates to classes that I have taken before as well as surprisingly, sports. Learning about the tissue response to injury allows me to clearly sees what happens when swelling occurs and how common beliefs of icing may be affecting healing.
(epithelium, human-epithelial tissue)
No comments:
Post a Comment