Keratin

1. Why is the cell theory significant (don’t just state the tenets, explain what it means and why it is a theory)? The cell theory is significant because of it’s three basic ideals or principles. The first is that all organisms are made from cells. This means that cells are the building blocks of life and technically, all of life is connected and related to each other by this tenet. In addition, by researching and examine one type of cell, the results can be assumed for all similar types of…

What protects a human being from external danger? A car 's seat belt? A helmet? Or our very own organ known as the skin? The skin is one of the most amazing organs in the human body. Skin is made up of specific cells and tissues to act as the boundary between you, me and the world. However, there are some factors that we have to pay attention to regarding our skins. The physiology of Skin will give an in dept explanation and description of its structure, functions, and diseases. The skin is the…

1.5 MUSEUMS AND PESTICIDE Museum collections are very susceptible to pest damage and pest control in museum environments is tricky. Damage can sometimes go unnoticed for years due to the gradual nature of the deterioration as well as the often-concealed storage of items. The damage caused can be irrevocable. However, sadly, so can the problems caused by the solution. Moreover, different government regulations have restricted the amount and the types of pesticides that institutions can actually…

Alexis Arciga Biol 125 M‐TH 9:30‐12:50 Parkinson’s Disease Parkinson’s disease is an illness that if diagnose can be persistent for the rest of your life. As the disorder progresses the symptoms become more severe. Trembling of the hands and feet occur, stiffness in the body and involuntary shaking occurs. This is due to the deterioration of the nervous system caused by lack of dopamine in the human brain. Doctors have been trying to figure an alternative to diagnose PD such…

2016). Stratified Squamous epithelium: It is a thick membrane consisting of several cell layers, the basal cells are cuboidal/columnar and metabolically active, the surface cells are flat, in the keratinized form, the surface cells are full of keratin and dead, the basal cells are active in mitosis and create the cells of the more superficial layers. Its function is to protect underlying tissues in areas that may be harmed. A non-keratinized form can be located in moist linings of the esophagus…

the outermost few microns of skin namely Stratum Corneum, which is a unique biomembrane. This extremely thin membrane is the least permeable layer of the skin due to its remarkable composition of terminally differentiated keratinocytes (compressed keratin-filled corneocytes) anchored in the lipophilic matrix. The lipids in this lipophilic matrix are responsible for many functions such as providing diffusion pathway from skin surface to SC. The lipophilic matrix (Figure 1.) is unique because of…

Section 1: Definitions & Short Questions 1.1 Fibers can be divided into 2 main categories: Manufactured fibers (Synthetic fibers and Regenerated fibers) and Natural fibers, but a fiber has still the same composition in both: A fiber is a material that is hair-like, longer than it is wide and fibers can be identified by their flexibility and being able to be spun into yarn or made into fabrics. 1.2 Staple fibers can be defined as natural fibers that can be twisted to form properties of yarn.…

It provides a protein that strengthens the hair, nails and skin, which is called Keratin. They are found in the Basal Layer of the Stratified Epithelium, where they multiply by dividing. Keratinocytes over time become flatter, lose their nuclei and die. The second cell type is called the Melanocytes, which produces the skin darkening…

Presenting Problem/Initial Observations Richard Madden was born in 1986 but insists that I refer to him as “Prince Kit” in any interaction with him. His father, Derek Jacobi, requested an evaluation of Richard due to recent changes in mood that have affected the daily life of both Richard, his father, and many employees. Unfortunately, Derek passed away a few days later after he sought help for his son. However, Richard does not seem to acknowledge any issues with his behavior, but has agreed…

Species And Why it Matters If They Become Extinct According to the famous definition by Ernst Mayr, a species is said to be “a group of interbreeding natural populations that are reproductively isolated from other such groups (Ridley)”. This quotation defines the biological species concept that is a largely accepted definition of a species. The human population is increasingly becoming a reckless civilization with no regard for the actions we follow therefore the concept of a species becoming…