BIOL 2457 - Week One Lecture Notes
BIOL 2457 - Week One Lecture Notes BIOL 2457 - 001
Popular in HUMAN ANATOMY AND PHYSIOLOGY I
Popular in Biology
verified elite notetaker
This 3 page Class Notes was uploaded by M.G on Friday January 22, 2016. The Class Notes belongs to BIOL 2457 - 001 at University of Texas at Arlington taught by Timothy L Henry in Fall 2015. Since its upload, it has received 146 views. For similar materials see HUMAN ANATOMY AND PHYSIOLOGY I in Biology at University of Texas at Arlington.
Reviews for BIOL 2457 - Week One Lecture Notes
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 01/22/16
Lecture Notes (Week of 1/19/16 1/22/16) [Chapter 1.1 1.4] ● Life is extremely versatile, living in every environment imaginable. ○ However, we’re in the middle of the 6th great world extinction ● Just in the last decade, we have discovered hundreds of new species. ● Science expanded our ability to discover reality. ○ However, this ability is still very, very limited. ● Basic scientific principles are applied whenever one makes a scientific inquiry ○ This inquiry relies on evidence ● Natural causality says that everything is natural and can be eventually understood. ● Human perception of nature is, at it’s core, the same. (Objectivity) ● We all see the world with a subjective lens. Scientific Method: ● Observation ● Hypothesis ● Experiment ● Theory (Conclusion) ● Law Occam’s Razor: ● Usually, the correct answer is the simplest. LEVELS OF ORGANIZATION IN ORGANISMS ● Living things are complex, but organized. ○ The basic building blocks of all things are atoms. ■ Atoms are the smallest unit of matter ■ Essential atoms for life are: Oxygen (O), Nitrogen (N), Hydrogen (H) Even in the most simple lifeform, there is still a complex organization. 11 BODY SYSTEMS 1. Integumentary system a. Skin 2. Skeletal system a. Support b. Calcium storage 3. Muscular system a. Movement b. Provides heat 4. Nervous system a. Helps coordinate other system b. CNS and PNS 5. Endocrine system a. Helps coordinate other systems through hormones 6. Cardiovascular system a. Helps flow of oxygen, hormones, and nutrients 7. Digestive system a. Takes complex things and breaks them down into nutrients 8. Urinary system a. Helps control water balance 9. Lymphatic system a. Fights off viruses and diseases 10. Respiratory system a. Lungs, etc. 11. Reproductive system a. Male, female, intersex. There are about 2x more microorganisms on you than cells that are a part of you. CHARACTERISTICS OF LIFE 1. Complexity and Organization 2. Metabolism a. All life forms use and convert energy 3. Homeostasis 4. Growth and Development 5. Respond to Stimuli 6. Reproduction & Differentiation 7. Evolve (in a microevolutionary sense) a. A capacity to change for survival HOMEOSTASIS ● All things in nature go from a cause to an effect ● Stimulus → Response ● Receptors receive incoming information and send it to a control center ○ This information is called afferent information ● The control center relays the information to effectors. ○ This information is now called efferent information. ● Effectors respond to the stimuli. Stimuli → Control Center → Response Afferent Efferent We maintain homeostasis by negative feedback. ● However, we can also maintain homeostasis by positive feedback. ○ Positive feedback is rare. ■ Clotting ■ Contractions/Childbirth is positive feedback ● Sweating and shivering are examples of negative feedback. EVOLUTION ● Reproduction ● Natural selection ● Variation ● Inheritance The result of evolution is adaptation.
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'