The Two Sides to Animal Testing Animal experimentation is a highly controversial subject throughout the world and in the 20th century the public has become increasingly aware of the two sides to animal testing. The earliest dated animal testing can be traced back to 384-322 BCE and it is still a common practice to this day. There are a few disagreements that are highly debated about animal experimentation such as the importance of the testing for scientific and medical goals‚ the suffering of
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Date: Animal System Introduction This essay focuses on the digestive system of ruminant animals like cattle‚ sheep‚ and goats. Ruminant animals are hoofed mammals that have a digestive system which enables them to utilize energy from fibrous plant material better than other herbivores. Unlike monogastric animals such as pigs and poultry‚ the digestive system or ruminants is designed to ferment feedstuffs and provide precursors for energy for the animal to use. Ruminant Digestive system The digestive
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connected through its Evolutionary history Phylogeny- is the history of descent of organisms from their common ancestor. Groups of evolutionarily related species are represented as related branches in a PHYLOGENETIC TREE. - A group of species that consists of a common ancestor and all its evolutionary descendants is called a CLADE. Named clades and species are called TAXA. - HOMOLOGIES are similar traits that have been inherited from a common ancestor. - A trait that is shared by two or more taxa and
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outline evolutionary mechanisms. Drawing on the psychological literature from more than one topic area of research‚ evaluate how well evolutionary theory provides a satisfactory explanation for human behaviour. The aim of this essay is to assess whether Evolutionary theory presents an adequate explanation for human behaviour. I will be drawing from different psychological literature‚ especially focusing on the research areas of sexual selection and parental care and investment. Evolutionary theory
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Organ Systems and their functions I. Integumentary System Functions to protects against environmental hazards; helps control body temperature. Composed of Skin and derivates Epidermis – covers surface; protects deeper tissues Keratinocytes – waterproofing Melanocytes – pigment –protects against UV light Dermis – Nourishes epidermis; provides strength; contains exocrine glands Collagenous tissue – strength Skin Derivates A. Hair– protection and warmth (vellus – fine un-pigmented hair: terminal
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Body’s Organ Systems and Their Major Functions System Organs Function Integumentary System Hair‚ Skin‚ and Nails Forms the external body covering‚ and protects deeper tissues from injury. Synthesizes vitamin D‚ and houses cutaneous (pain‚ pressure‚ etc.) receptors and sweat and oil glands. Skeletal System Joints and Bones Protects and supports body organs‚ and provides a framework the muscles use to cause movement. Blood cells are formed within bones. Bones store minerals. Muscular System Skeletal
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WGS160Y1 Essay 1: Two-gender systems Written by: Hi Yang (Diana) Kim Student #998325441 TA: Melanie Redford Prof: June Larkin As Grewal &Kaplan (2005) writes‚ the “two gender system” that at first seemed so “natural” has not been so for all time or everywhere in the world (P.2).” The two-gender system‚ also known as the “gender binary”‚ which classifies sex and gender into two distinct forms of masculine and feminine‚ sets limitations for individuals who may or may not wish to fit into
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What is an Organ Broker? A poor man is desperate to make money to feed his family in an undeveloped country. A rich man is sick and needs a kidney transplant in order to survive. He is willing to pay whatever it takes to save his life. A greedy man acts as a middleman‚ or broker‚ between the two men and goes home with a profit of thousands of dollars. Organ brokers are most common for organizing kidney transplants and other non-essential organs. However‚ occasionally organ brokers will bribe
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The Organisation Level of an Organ System. There are 11 organ systems in the body such as the reproductive system‚ digestive system and the cardiac system. The first level organisation is the organelles which collect together to produce a cell. The organelles all have a function in the cell to keep it alive. For example the mitochondria is an organelle in a cell which has the role of respiration in the cell. The mitochondria produces ATP which involves contracting muscles‚ taking part in cell division
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Respiratory System The respiratory system is the bodies way to inhale and exhale air and diffuse oxygen. This system consists of several organs such as the trachea‚ lungs‚ larynx‚ pharynx‚ etc. All of these organs work together to help us breathe and are formed to their function. There is two different ways of respiration; external respiration which is the exchange of gases between the alveoli and the blood‚ and internal respiration which is the exchange of gases between the blood and tissue cells
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