The Function of Lips and Their Biological Significance
Lipids are biological molecules and are insoluble in aqueous solutions
but are soluble in organic solvents. Specific lipids have a
physiological importance to humans; they have three major functions;
serving as structural components of biological membranes, act as
vitamins and hormones, provide energy storage (triaculglycerols).
Lipids are made up of the elements carbon, hydrogen and oxygen. Lipids
can exist as fats, oils and waxes. Fat and oils are similar in
structure as they are triglycerides, however, they physically differ
at room temperature fats are solid and oils liquid. Their differences
in property are what help contribute to its significance in life.
A triglyceride consists of fatty acid chains which are attached to a
glycerol molecule; fatty acids are chains of carbon atoms, the first
carbon atom is attached to an OOH group resulting in a carboxylic
group (COOH). The normal length of the chain is roughly 14 to 22
carbons long, with the most common chains being between 16 and 18
carbons long.
Triglycerides can occur with two types of bonding. Saturated
triglycerides have no double bonds between the carbon and the
hydrogen. Unsaturated triglycerides have one or more double bonds, and
fats containing several double bonds are called polyunsaturated. One
of the characteristics of unsaturated fatty acids is the fact that
they melt at a low temperature due to the double bonds. This is
significant in the manufacture of margarine and butter spreads as
polyunsaturated products are more beneficial as they are kept in
refrigerators for storage.
Lipids are signific...
... middle of paper ...
... metabolised or stored via the blood plasma combined wit soluble
proteins.
Waxes are, finally, the other form of lipids. They are esters formed
from a fatty acid and a complex alcohol. These are produced by plants
and help to limit water loss through evaporation, as form a waxy
cuticle. Wax is secreted by insects for the same role on the outer
surface of their cuticle. Bees use wax in the honeycomb cells they
build for rearing their larvae and storing honey.
Conclusively lipids are highly significant in many life processes. The
creation of lipids allows both plant and animal life to carry out
vital functions in order to maintain life. Without lipids our bodies
would be polluted from cells being invaded by substances that
shouldn’t enter and thus is an extremely important component for the
sustenance of life.
The integumentary system has five main functions. The five main functions of the integumentary system are protection, regulation, sensation, absorption, and secretion. It consists of the hair, nails, skin, sebaceous and sweat glands. The largest organ of the entire body is the skin. The skin consists of three different layers. The epidermis, the dermis, and the subcutaneous layer, these are the three layers of the skin. There is a layer that is deeper than the skin and contains body fat, that layer is called the hypodermis. Sweat glands are also called sudoriferous glands. One of the functions of the skin is to maintain homeostasis. Synthesis of vitamin D, excretion of urea, excretion of salts and water are a few things that the skin is also capable of. The top layer of the skin is called the epidermis. The epidermis contains five different layers. These layers are the stratum corneum, the stratum lucidum, the stratum spinosum, and the stratum basale. In the epidermis there are four different cell types. The keratinocytes which produce keratin, the merkel cells that are sensitive to touch, the langerhans cells which is a dendritic type off cell, and the melanocytes which produce melanin.
The first poem I am going to be analyzing is What My Lips Have Kissed, a sonnet written in the 1920’s. This poem is about numerous loves approaching a close, and the tribulations brought about by said conclusion. The main theme in the sonnet is focused on the transition that occurs in the Millay’s life; such as, the seasons changing. Edna St. Vincent Millay uses the difference between summer and winter to represent the utter contrast she goes through. Millay uses summer to correlate with a period of contentment, brightness, and affection; however, winter is used to correlate with monotonous, misery, and an emptiness. The changes in the seasons mirror the emotional state of the central figure of the narrative before and after the ménage à trois.
In order to determine which fish oil supplement is best for us, we must first have a greater understanding of how each constituent is molecularly structured and how it is readably absorbed into the body. Triglycerides by definition are the main constituents of animal fats and vegetable oil. TG is a chemical compound that is formed from three fatty acids and one molecule of glycerol, as seen in Figure 1: The Molecular Structure of a Triglyceride.
Fatty acids such as linoleic acid, linolenic acid and arachidonic acid are known as essential fatty acid because they cannot be synthesized in the body so must be supplied in the food. Human being lacks the ability to introduce double bonds in fatty acids beyond carbons 9 & 10. About 20 different fatty acids are synthesized from the two essential fatty acids linoleic acid and linolenic acid. Omega three fatty acid is synthesized from linolenic acid and omega six fatty acid is synthesized from linolic acid.
Polyunsaturated fats examples include liquid cooking oils like corn oil, sunflower oil, safflower oil, soy oil, nuts such as walnuts, seeds, fish, seafood, polyunsaturated margarine. Polyunsaturated fats are essential fats required for normal body functions. Since human body cannot make them, we must get them from food. Polyunsaturated fats are important for blood clotting, to build cell membranes, the nerve coverings, muscle movements, controlling inflammation, etc. Consuming products with polyunsaturated fats in place of saturated fats or highly refined carbohydrates reduces harmful LDL cholesterol improving cholesterol profile. A polyunsaturated fat contains two or more double bonds in its carbon chain. The two main types of polyunsaturated fats are omega-3 fatty acids and omega-6 fatty acids. The numbers refer to the distance between the beginning of the carbon chain and the first double bond. Both types offer health benefits and lowers
Introduction: This report is to discuss an experiment to assess the sensory and motor functions of the facial nerve in humans. The facial nerve is one of twelve cranial nerves that innervates the head and neck. These nerves serve a variety of functions, both sensory and motor, and are responsible for moving the muscles in the face, head and neck, and receiving information the brain can interpret into all five sense. Appendix A outlines each cranial nerve, it’s sensory and/or motor function, and the foramen in the bones of the skull it passes through.
The Stanford Encyclopedia of Philosophy describes Levinasian philosophy as the concept of the “ethics of ethics” and explains Emmanuel Levinas’ philosophical concept of the face as a “call and command to ethical action.” These ethical tenets explore the notion of the face in its nudity and defenselessness signifies: “Do not kill me”; furthermore any exemplification of the face's expression carries with it this combination of resistance and defenselessness (Levinias). Although Lévinas' theory of the face bears resemblance to Martin Buber's "I and Thou" relation, Levinias’ focus of the “other” as an asymmetrical relationship that leads us to either “love it or kill it (Levinias 23).” According to Emmanuel Levinias “The face brings a notion of
All creatures provide themselves with fatty foods because lipids are important when storing energy for long periods of time. An example on how to test for lipids (or fats and oils) is to simply rub or brush the sample on a piece of wax paper and let the paper dry. Once the paper is fully dry, a greasy or oily stain will show up when paper is dry and held up to the light. Beef, potatoes, and other deep fried or greasy foods showed up well on the wax paper.
The bad fats are trans fatty acids. Trans fatty acids are created and are saturated fats meaning they have no carbon double bonds. Diets high in saturated fats increase the risk of heart disease. Foods to avoid would are beef, butter, and lard. The good fats are unsaturated fats. These are commonly called monosaturated fats, and polysaturated fats. Diets high in unsaturated fats are, “associated with a lower risk of heart disease” (p.137) Monosaturated fats can been found in avocados, olive and canola oil. Polysaturated fats such as linoleic and alpha-linolenic acid are essential fatty acids because the body is not able to produce them, as described, “they are needed for the formation of the phosopholipid that give cell membranes their structure and functional properties.”(p.138) Cholesterol is needed to, “synthesize other sterols, including vitamin d; bile acids, which are emulsifiers in bile; cortisol, which is a hormone that regulates our physiological response to stress; and testosterone and estrogen, which are hormones necessary reproduction.” (p.140) I am pleased to mention that I met all the requirements for fatty acids and
Fats. This is essential for your body, as it helps maintain a healthy body. There are many different forms of fat. Some good and some bad. The ones that are good and form part of the macronutrient are fats such as saturated, monosaturated and omega 3,6,9. Fat is used as a means of protection for the body. It is used as insulation to keep a regular body temperature. Fat is also protects the organs of the body.
What conflict management style(s) did Lapierre, the international team, and Gushin use to resolve these conflicts? What style(s) would have worked best in these situations? 3 points
In Chapter 6 we learn about the Integumentary System. The discussion on the integumentary system will include the skin and subcutaneous tissues, hair, nails, and cutaneous glands and disorders of the skin.
The integumentary system is an organ system that is often overlooked when compared to other major organ systems. The importance of the integumentary system and its role in thermoregulation and its first line protection for the body is of utmost importance. The integumentary system includes the following organs: skin, hair, nails, and exocrine glands. Skin is a very large organ, and is the most important organ of the integumentary system. The surface area of skin is about 20 square feet, and weighs about 10 pounds. The importance of skin is to protect the body from UV light, chemical, disease and physical trauma that can occur to the body. The skin helps regulate body temperature. It does this through storage of adipose tissue and through secretions of sweat. It also allows for sensing touch, Different temperatures that the body comes into contact with are sensed and these messages are sent to the brain so that a reaction can occur in order to protect the body. A very important part of the integumentary system is that it is responsible for making vitamin D. Vitamin D is key in the function of calcium absorption.
The omega-3 fatty acids, popularly referred to as fish oil, are considered unsaturated fats. Science differentiates between unsaturated and saturated fats quite clearly. One fact that separates the two is the temperature at which melting occurs. Saturated fats melt at a higher temperature than unsaturated fats. The science behind fatty acids is rather complex; carboxylic acids with long hydrocarbon chains are the building blocks of saturated and unsaturated fats. This is important to the human body for many reasons; one reason being unsaturated fats do not cause plaque build-up in arteries like saturated fats due to their molecular structure in the human blood stream.
There are many more lipids than I have mentioned in my research paper, there are over a 100 know lipids. Lipids are very important for our body and cells and they carry out many function. They provide nutrients for our body. Lipids are a category of nutrients. Lipids consist of fats, oils, and waxes and are very important for are body’s health. Lipids are important for the human body because they are for storing energy, they’re good at storing energy because they can concentrate a group of calories in a smaller area. Lipids are also used to make soaps, detergents and waxes. These are things that we use in every day life.