The Integumentary system maintains the body’s temperature‚ homeostasis‚ and delivers sensory information. Hair‚ nails‚ skin‚ glands and nerves are all part of the integumentary system. The integumentary systems main functions are to protect and keep the body safe from all external environments. Furthermore the roles of the integumentary system are to help control the body temperature‚ remove any unwanted toxins in the body and fight against any illness or disease. Thermoregulation is a function
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PLANT CELL Introduction Plant cell is the basic unit of structure and function in nearly all plants. The range of specialization and the character of association of plant cells are very wide. In the simplest plant forms a single cell constitutes a whole organism and carries out all the life functions. In just slightly more complex forms‚ cells are associated structurally‚ but each cell appears to carry out the fundamental life functions‚ although certain ones may be specialized
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STEM CELL RESEARCH AND THERAPYAND ITS IMPACTS ON SOCIETY Abstract There are several types of stem cells being used in stem cell research and therapy today. They are embryonic‚ adult and induced pluripotent stem cells. Each will be discussed further. This topic has stirred much moral‚ ethical and political debate as whether cells from fetuses should be used in this research. This impacts governmental policies on laws and funding. Another issue that must be analyzed is the
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Site Plan | I. Neurons/nerve cells A neuron is a cell specialized to conduct electrochemical impulses called nerve impulses or action potentials. Neuron is the main cellular component of the nervous system‚ a specialized type of cell that integrates electrochemical activity of the other neurons that are connected to it and that propagates that integrated activity to other neurons. They are the basic information processing structures in the CNS.
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Have you ever wondered which body system helps bring oxygenated and deoxygenated blood to the heart? Well that system is called the Circulatory System or the Cardiovascular System. Have you ever wondered which body system helps bring air into the lungs? That system is called the Respiratory system. You are probably wondering why I am mentioning the Respiratory and Circulatory system? I am talking about them because‚ these are the two system that I am going to be comparing and contrasting in this
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7-1‚ 7-2 Cell Structures and Function cell theory- all living things are composed of cells‚ cells are the basic units of structure and function in living things‚ new cells are produced from existing cells. prokaryote- smaller and simpler than eukaryotes‚ do not contain nuclei‚ are part of the Bacteria domain‚ are unicellular‚ are autotrophs or heterotrophs eukaryote- cells with nuclei and contain specialized structures called organells. All plants‚ animals and fungi are eukaryotes. Part of the
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Body Systems of Various Organisms All organisms in the world have a range of systems and organs in their body. Some organisms may share similar body systems while others have absolutely nothing in common. Several of those organisms include humans‚ pigs‚ crayfish‚ and earthworms. From their mushy‚ gushy organs to their soft‚ gentle skin‚ you may think‚ “How are humans and pigs possibly alike? Or a crayfish and an earthworm?” In many ways they may not be‚ but in other ways‚ they are very much alike
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1. Why is cell differentiation important in the formation of organ systems? - When a cell differentiates‚ it becomes more specialized and it may undertake major changes in its size‚ shape‚ metabolic activity‚ and overall function. Cellular differentiation is important and occurs so cells can specialize for distinct functions‚ such as an organ system‚ within an organism. All cells in the body‚ beginning with a zygote‚ contain the same DNA then go through cell growth and division‚ also called mitosis
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The systems of the body. Systems are the most complex of the component units of the human body. A system is an organization of varying numbers and kinds of organs arranged so that together they can perform complex functions for the body. There are 10 systems in the body‚ but the 3 main are: • The nervous system • The respiratory system • The circulatory system The nervous system. The nervous system has two main parts: • The central nervous system – CNS; This is composed of the brain and the spinal
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allow cell phones to be sold without pre-market testing. The rationale‚ known as the “low power exclusion‚” distinguished cell phones from dangerous microwave ovens based on the amount of power used to push the microwaves. At that time‚ the only health effect seen from microwaves involved high power strong enough to heat human tissue. The pressure worked‚ and cell phones were exempted from any type of regulatory oversight‚ an exemption that continues today. An eager public grabbed up the cell phones
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