powered by the oxidation of fats and carbohydrates‚ but anaerobic chemical reactions are also used‚ particularly by fast twitch fibers. These chemical reactions produce adenosine triphosphate (ATP) molecules which are used to power the movement of the myosin heads.
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CHAPTER 1 Interest in the human body and how it functions probably developed when our ancestors began to think about the reasons why people became ill and died. All earlier cultures had someone designated as a healer who was responsible for finding plants and herbs that cured body disorders. This healer also was responsible for praying or invoking the assistance of past ancestors to help in the healing process. As cultures developed and science began to evolve‚ interest in and knowledge about
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complex muscular response. 16. When patients are told to think about a particular movement‚ there is an increase in blood flow to the (motor cortex/supplemental motor area). 17. The (thin/thick) filaments are made of the contractile protein called ‘myosin’. 18. Muscles do not continuously contract because the cross bridges are (prevented/allowed) to bind with the actin molecules. 19. When there is an action potential‚ it (acts on the contractile proteins directly/increases the cytosolic calcium concentration)
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Chapter 4 Tissue: The Living Fabric 4.1 What are tissues? * Groups of cells that are similar in structure and perform a common or related function * There are four basic types of tissues: 1) Epithelial (covering) 2) Connective (support) 3) Muscle (movement) 4) Nervous (communication and control) * The study of tissues is known as histology 4.2 Preparing Human Tissue for Microscopy Requirements * Specimen must be fixed (preserved) * Specimen must be
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Cell Structure - Cell Organelles 1. What is cell theory? Cell theory asserts that the cell is the constituent unit of living beings. Before the discovery of the cell‚ it was not recognized that living beings were made of building blocks like cells. The cell theory is one of the basic theories of Biology. 2. Are there living beings without cells? Viruses are considered the only living beings that do not have cells. Viruses are constituted by genetic material (DNA or RNA) enwrapped by a protein
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Section 1: Binary fission‚ mitosis‚ & meiosis Reading: Chapter 7 Watch and Learn: Mitosis http://www.youtube.com/watch?v=1cVZBV9tD-A&feature=share&list=UUEik-U3T6u6JA0XiHLbNbOw Meiosis http://www.youtube.com/watch?v=rB_8dTuh73c&feature=share&list=UUEik-U3T6u6JA0XiHLbNbOw Basic Learning objectives After completing the readings and practice exercises‚ students should be able to: Describe the process of binary fission. Describe the features and components of eukaryotic chromosomes and sister
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Chapter Four DEFINITIONS nucleic acid – polymers specialized for the storage‚ transmission between generations‚ and use of genetic information. There are two types‚ DNA and RNA nucleotides – monomers that compose nucleic acid‚ consist of a pentose sugar‚ a phosphate group‚ and a nitrogen containing base. DNA - – a macromolecule that encodes hereditary information and passes if from generation to generation. RNA and the bonds that stabilize them Purine - one of two chemical forms
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Cardiovascular System _____________________________________________________________________ The total length of you cardiovascular system stretches an amazing 96‚000km(60‚000 miles) - more than twice around the Earth ________________________________________________ (Human Body 2001) Gas Exchange‚ Transport & Organization of the Body Contents 1. What is the Cardiovascular system 2. The composition and function
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BIOLOGY 22 MODULE 1 – Chemical Basis of Life v2.0 * Levels of Organization – biological functions are ultimately based on the properties of atoms and molecules * Subatomic particles – neutrons‚ electrons‚ protons * Atoms * Compounds * Complexes of compounds * Organelles – bodies within cells that perform specific functions * Cell * Specific combination of organelles * Can metabolize and reproduce * Least elaborate living structure * Significance
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The Cellular Basis of Reproduction and Inheritance Chapter 8 Order Reproduction Growth and development Energy processing Response to the environment Regulation Evolutionary adaptation http://www.youtube.com/watch?v=46Xh7OFkkCE Introduction Cancer cells start out as normal body cells undergo genetic mutations lose the ability to control the tempo of their own division run amok‚ causing disease In a healthy body‚ cell division allows for: growth the replacement of damaged cells development from
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