Kayli Jade Gertsen Skin Evolution Essay Human skin pigmentation is the product of two clines produced by natural selection to adjust levels of constitutive pigmentation to levels of UV radiation (UVR). One cline was generated by high UVR near the equator and led to the evolution of dark‚ photo protective‚ melanin-rich pigmentation. The other was produced by the requirement for UVB photons to sustain cutaneous photosynthesis of vitamin D3 in low-UVB environments‚ and resulted in the evolution of
Premium Human skin color Ultraviolet Natural selection
countless others suffered from disabling injuries and mental instabilities even after returning home. Both The Deer Hunter (1978 Michael Cimino) and Apocalypse Now (1979 Francis Ford Coppola) can be used to provide and insight into the effects of the war on the soldiers that fought in the war‚ but also to those who knew the soldiers and remained in the United States during the war. In short The Deer Hunter is a film about men from a working-class steel town that are about to be shipped off to Vietnam with
Premium Apocalypse Now Francis Ford Coppola
Different skin tones in humans are associated with the sun’s UV radiation and geography. UV rays can be used by the human body as a source for Vitamin D‚ which helps make bones stronger by taking in the calcium necessary to create stronger bones. A ton of sun exposure that’s especially strong can be damaging to the human body‚ especially the skin. To solve this problem‚ evolution created a skin tone that was already dark in areas with strong sun exposure to protect the skin from the dangerous rays
Premium Ultraviolet Sunscreen Sun tanning
The Eyes of the Skin of Architecture Juhani Pallasmaa This book was written by Juhani Pallasmaa with regard to ‘Polemics’‚ on issues that were part of the architecture discourse of the time‚ i.e. 1995. It is also an extending of ideas expressed in an essay entitled “Architecture of the seven senses” published in 1994. As suggested by the title‚ this piece of literature attempts to highlight the importance of sensory experience in architecture. It is indeed a response to what the author terms
Premium Sense Perception Sensory system
The second installment in the movies of Painted Skin does revolve around the love battle that was fought between General Huo‚ the Princess Jing along with the ancient demon Xiaowei. The demon in this film Painted Skin needs the heart of many men in order to escape her curse and she is seen many a times to enjoy the insecurities of scarred face Princess Jing where it concerns Huo. She does specifically encounter Princess Jing and Huo‚ who is a part of her royal guard and is loved by the princess a
Premium Love Woman Marriage
The Physiology and Pathophysiology of the Skin Abstract The 5-HT3 receptor is a ligand-gated cation channel located in the central and peripheral nervous system; it has also been detected on a variety of other cells. In the periphery‚ it is found on autonomic neurons and on neurons of the sensory and enteric nervous system. In the CNS‚ the 5-HT3 receptor has been localized in the area postrema‚ nucleus tractus solitarii‚ nucleus vaudatus‚ nucleus accumbens‚ amygdala‚ hippocampus‚ entorhinal‚
Premium Nervous system Neurotransmitter Dopamine
Classically‚ a flap has been defined as a “tongue of tissue containing skin and sub cutaneous tissues which carries its own blood supply and remains attached to the body at all times for its nourishment”. However‚ the evolution of flap surgery in the last five decades has been so rapid that this definition has become not only inaccurate but also highly inadequate. Thus‚ with the increasing knowledge of cutaneous vascular supply‚ development of microvascular techniques‚ increasing refinements in available
Premium Medicine Health care Health insurance
“The man in mid-air… [He] is famous on the bridge‚ a daredevil… a solitary… a spinner… an exclamation mark.” Anonymous‚ “he floats at the three hinges of the crescent-shaped steel arches. These knit the bridge together. The moment of cubism… Nicholas Temelcoff.” The ‘Workers Plight’ and ‘Official History vs Real History’ are the two main themes portrayed through the voice of Temelcoff. These two ideas are the reasons Temelcoff’s voice resonates with me. They symbolise history’s incomplete nature
Premium Immigration Migrant worker Human migration
How Our Skins Got Their Color Summary This article states on how we got our skin color. In this article Marvin Harris described how the pigment of our skin originates where we live around the equator. If someone lives around the equator they have high risk of getting rickets‚ or osteomalacia. For example‚ if someone was light skinned living in Australia your chances of getting melanoma is high. The reason the risk is high for light pigmented skin living in Australia‚ is because many of them wear
Premium Ultraviolet Human skin color Sun tanning
someone is enough to change their perspective on life. However for others‚ it may take an experience like falling in love or experiencing a death of a loved one in order for the individual to be enlightened to a new way of looking at things. In the Skin of a Lion by Michael Ondaatje shows Patrick as he goes from being blind to the realities of life to being enlightened to many things after he finds unconditional love. In many ways Patrick was like the blind iguana given to him by Clara. An iguana
Premium Blindness Michael Oher Raymond Carver