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Human Physiology Biology 235 Prerequisites : Biology 101, 102, 103, 104 or Biology 115 w/lab

Human Physiology Biology 235 Prerequisites : Biology 101, 102, 103, 104 or Biology 115 w/lab There is a quantitative lab (BMEG 236) intended for engineering majors. It is taught by Dr. Yuxin Liu. Office hours: Dr. Sue Raylman Mon and Wed 12:00 – 1:50 5110 LSB sphilhow@wvu.edu.

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Human Physiology Biology 235 Prerequisites : Biology 101, 102, 103, 104 or Biology 115 w/lab

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  1. Human Physiology Biology 235 Prerequisites: Biology 101, 102, 103, 104 or Biology 115 w/lab There is a quantitative lab (BMEG 236) intended for engineering majors. It is taught by Dr. Yuxin Liu

  2. Office hours: Dr. Sue Raylman Mon and Wed 12:00 – 1:50 5110 LSB sphilhow@wvu.edu

  3. Website http://www.as.wvu.edu/~sraylman/physiology/

  4. Assignment #1 due Jan 15 1. Name 2. Major 3. Your future plans…(what type of job do you see yourself pursuing?) 4. What information do you most want to learn about the human body? (3 topics)

  5. Success in Biology 235 is simple: • Come to class • Take good notes • Read the text as we go along

  6. During the minute that it will take you to read this page: Besides receiving and processing information such as visual input, your brain will provide output to your muscles to help maintain your posture, move your eyes across the page as you read, and turn the page as needed. Chemical messengers will carry signals between your nerves and muscles to trigger appropriate muscle contraction. Your eyes will convert the image from this page into electrical signals (nerve impulses) that will transmit the information to your brain for processing. Your heart will beat 70 times, pumping 5 liters (about 5 quarts) of blood to your lungs and another 5 liters to the rest of your body. You will breathe in and out about 12 times, exchanging 6 liters of air between the atmosphere and your lungs. Approximately 150 million old red blood cells will die and be replaced by newly produced ones. More than 1 liter of blood will flow through your kidneys, which will act on the blood to conserve the “wanted” materials and eliminate the “unwanted” materials in the urine. Your kidneys will produce 1 ml (about a thimbleful) of urine. Your cells will consume 250 ml (about a cup) of oxygen and produce 200 ml of carbon dioxide. You will use about 2 calories of energy derived from food to support your body’s “cost of living,” and your contracting muscles will burn additional calories. Your digestive system will be processing your last meal for transfer into your bloodstream for delivery to your cells.

  7. (a) Chemical level: a molecule in the membrane that encloses a cell (b) Cellular level: a cell in the stomach lining (c) Tissue level: layers of tissue in the stomach wall (d) Organ level: the stomach (e) Body system level: the digestive system (f) Organism level

  8. Tissues Muscle- 3 kinds: skeletal, cardiac, and smooth

  9. Tissues Muscle - 3 kinds: skeletal, cardiac, and smooth Nervous - transmit electrical impulses

  10. Tissues Muscle - 3 kinds: skeletal, cardiac, and smooth Nervous - transmit electrical impulses Epithelial - sheets and glands

  11. Tissues Muscle - 3 kinds: skeletal, cardiac, and smooth Nervous - transmit electrical impulses Epithelial - sheets and glands Connective - few cells dispersed in an extracellular matrix (more cell types than you probably think)

  12. Homeostasis- maintaining a stable internal environment • The ECF is the internal environment.

  13. Homeostasis doesn’t imply that ECF is unchanging or that your body never goes ‘out of balance’…sometimes it must!

  14. Body systems communicate and feedback w/one anotherNegative feedback opposes an initial change. It maintains homeostasis.

  15. Negative feedback Within the body you need: • control center • sensor • effector Body temperature and shivering

  16. Positive feedbackamplifies an initial changeEx: oxytocin release at childbirth

  17. Recall basic cell physiology Next class I will assume you know the basic functions of these structures: • Smooth and rough endoplasmic reticulum • Golgi • Peroxisomes • Lysosomes • Mitochondria • Basic structure of the plasma membrane

  18. Recall basic cell physiology Next class I will assume you remember basic information on these processes: • Glycolysis • Krebs cycle (or Citric Acid, TCA cycles) • Oxidative phosphorylation (or ETC) • ATP production under aerobic vs. anaerobic conditions

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