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5 Written questions

5 Matching questions

  1. William Harvey (1578-1657)
  2. Survivable Ambient Temperature Range
  3. Homeostasis
  4. Phospholipid Bilayer (Functions)
  5. Chemical Thermogenesis Long-Term Effect
  1. a Exposure to cold temperatures down to 55 °F or hot temperatures up to 130 °F. (Subject nude in dry air.)
  2. b * Hydrophobic tails provide a barrier to the movement of polar molecules between ICF and ECF
    * Packed hydrophobic tails in a thin space imparts electrical capacitance to the neuronal membrane
    * Framework of bilayer allows orientation of integral proteins in specific manners so that channels and gates can be formed
  3. c Metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes.
  4. d Modern physiology dates from his research on the cardiovascular system; "On the Movement of the Heart and Blood in Animals"; blood recycled, pumped out of the heart via arteries which were somehow connected to veins and returned to the heart (capillaries weren't visible).
  5. e Increased metabolic rate (20-30%), more nutrients utilized, more calories consumed.

5 Multiple choice questions

  1. 60% found in the brain, 1 trillion cells, 100 billion in brain, communicate via action potentials, generate action and electrical potentials.
  2. (Intracellular fluid component) ~1.6 liters in adults
  3. Epinephrine, nor epinephrine, and thyroxin cause uncoupling to occur reducing the number of ATP's produced in the electron transport in the aerobic pathway. Fewer ATP's results in greater heat (26 less ATP * 7.3 kcal / ATP = 189.9 kcal of heat). Infants can double heat production; adults can have a 10-15% increase.
  4. This kidney targeted hormone allows an acclimatized person to sweat 2-3 L/hr while minimizing the loss of salt.
  5. Different types of cells with the same intercellular substance; have a specific function.

5 True/False questions

  1. Extracellular Fluid (ECF)The fluid surrounding the cells and is the internal environment of the body - the internal milieu; constantly circulating through the blood and lymph vessels, and into the spaces between the tissue cells; contains nutrients, ions and gases necessary for the survival of the body cells.


  2. Integral (Proteins)* These proteins span the entire lipid bilayer
    * May act as ion channels and transporters (e.g. Na⁺, K⁺, Ca²⁺, and Cl⁻) across the membrane
    * Act as receptors for neurotransmitter substances, receptors for nerve growth, and adhesion factors


  3. ECF Containssodium, chloride, calcium, bicarbonates, nutrients for cells (e.g. glucose, fatty acids, amino acids), oxygen and carbon dioxide


  4. Leeuwenhoek (1632-1723)Dutch microscopist; observed and described red blood cells and spermatozoa; didn't publish his journals (weren't found until nearly 100 years later).


  5. ConvectionTransfer of heat from the body by currents (air and water).