5 Written Questions
5 Matching Questions
- Chemical Thermogenesis
- Structure of Sweat Gland
- Cell Volume
- Neural Integrators
- a * Deep glandular portion in the dermis innervated by sympathetic fibers
* Coiled duct opens to skin surface via a pore
- b Pyrogens increase hypothalamic thermostat set point suddenly initiating a cascade of events: dermal vasoconstriction, shivering, piloerection, hot sensation due to chemical thermogenesis.
- c (Intracellular fluid component) ~1.6 liters in adults
- d Another apt term for interneurons.
- e Long-term mechanism for generating body heat. Sympathetic nerves produce epinephrine and nor epinephrine and release into blood, and the thyroid releases thyroxin. Increased cellular metabolism and metabolic rate.
5 Multiple Choice Questions
- Increased metabolic rate (20-30%), more nutrients utilized, more calories consumed.
- Interstitial fluid (tissue fluid between cells); Blood Plasma; Lymphatic Fluid; Pleural Fluid; Pericardial Fluid; Cochlear and Ocular fluids; and the fluid in the tunic of the testes.
- 22% of heat loss. Sweat glands and exhalation provide liquid. Water off skin and out of lungs occurs at a rate of 450-600 mL/day = 12-16 kcal/hour of heat.
- Receives sensory input and compares it to the desired value (set point).
- * Isolates the cell
* Regulates the intracellular and extracellular ionic environment
* Comprised of a phospholipid bilayer
5 True/False Questions
Receptor → Organ or tissues that receive information (output) from the control center and produces a response.
Survivable Ambient Temperature Range → Another apt term for interneurons.
Heat Cramps → Prolonged heat exposure with high humidity. Body gains heat by radiation and convection while evaporative cooling is retarded. Can lead to convulsions, coma, and death.
Efferent Neurons → Motor neurons that are fibers from the central nervous system to effectors like muscles.
Hypothalamic Temperature Control (Hot) → Negative and Positive