Epithelium

This essay will provide a focus on the concept of structure in relation to function in biology. The example taken into consideration for the essay is the reintroduction of Gray wolves (Canis lupus), hence predators, into Yellowstone National Park to restore the ecosystem health. Many are the ecological interpretations of wolves’ function when it comes to the Northern Rockies ecosystem as research and scientists have been documenting their overall impact for the last few decades. Firstly, a…

corneal abrasion in medical term.This injury consist of the scratching of the cornea by the finger or the fingernail of a player.An abrasion can be small or large depending of the gravity of the scratching.This type of injury ensues when the corneal epithelium is abraded and it is more common in basketball (Brummit & Ericksson p.150) where the players in general without face protection are constantly jumping or defending on another player to get the ball.Along the same side a study from…

Cells are the basic building blocks of life. They are the smallest structural unit in an organism, and the organism must continuously create more cells in order to live. New cells are created through a process called cell division, or mitosis, where one cell turns into two cells. This process is necessary for life, but occasionally the cells do not do what they are supposed to. Cancer is one example of cell malfunction. A DNA mutation can disrupt the genes in the cell and cause it to produce…

phase of swallowing is the passage of bolus through pharynx into the esophagus. It is involuntary. 19. Does peristalsis “push” or “pull” food along the gastrointestinal tract? Peristalsis push food along the gastrointestinal tract 20. Compare the epithelium of the esophagus with that of the stomach. How is each adapted to the function of the organ? 21. What is the importance of rugae, surface mucous cells, mucous neck cells, chief cells, parietal cells, and G cells in the…

A concept that is being thought about is the idea of genetically modified crops that contain the venom named Androctonus australis Hector Insect Toxin or AaIT. The implementation of this toxin into crops has caused some controversy given that it is a powerful toxin derived from the scorpion Androctonus australis hector. The use of this toxin has been explored in many studies to study how dangerous it is for people to ingest as well as the benefits that can come about by the use of this pesticide…

Gastrointestinal Tract This essay will be reviewing the gastrointestinal tract (GI tract), looking at the components and their functions. It will explore how the system works, how it can be assessed by a clinician and the ethical and practical issues related to when assessing the GI tract. In relation to this, I will also be analysing how the endocrine system and autonomic system correlate to the gastrointestinal tract. How it functions Marieb (2016) states that the gastrointestinal tract…

It is that time of year again. The time where the leaves change color, the temperatures go down, and everyone gets sick. The cold and flu season has arrived and everyone is at risk. Germs and viruses are being spread and many try to take the proper precaution to avoid them. One group that is particularly at risk is infants and newborn babies. Since their immune system is still developing and it is not as effective as that of an adult, infants can get sick easily and take long to recover from it…

Cestodes have a scolex with two longitudinal bothria. There are hooks present and they also have genital pores that are lateral or medial, which depends on the species. They also have numerous testes. The life cycle of this parasite involves a crustacean as the first intermediate host and a fish as the second intermediate host. The size of the species varies widely and the largest known measure more than 40 meters long. Each segment has four to fourteen complete sets of genitalia. The scolex of…

Henry Williams is a 74 year old African American male. Mr. Williams was admitted to the hospital with an acute exacerbation of chronic obstructive pulmonary disease (COPD). Mr. Williams has a past medical history of COPD, cardiovascular disease (CVD), asthma, hearing loss with use of hearing aids, hypertension (HTN), and hyperlipidemia. He smoked one pack per day for 50 years. He quit smoking about 6 years ago. Mr. Williams was sent to the emergency department (ED) by his primary care doctor,…

Oxygen gasses are exchanged by the alveoli, which are tiny sacs in the lungs (“Boundless,” 2015). Before oxygen can pass through the respiratory epithelium, it must dissolve (“Boundless,” 2015). Gasses then move to a low area of partial pressure, a “measure of the concentration of the individual components in a mixture of gases” according to Boundless, from the area with a higher partial pressure via…