Chapter 49 Quizzes: Self Activities Chapter Cum. Animations     Words   Appendix    Summary   Art    Art 

Unit 7: Animal Form and Function Sensory and Motor Mechanisms Review
  1. A sensory receptor converts stimulus energy into a potential, or a change in the membrane potential, to the CNS.
     
     
  2. In the human ear, detect settling particles or moving fluid, which are perceived as sound in the lobe of the cerebrum. The , , and canals in the ear function in balance and equilibrium.
     
     
  3. Chemoreceptor cells for (taste) are modified epithelial cells organized into taste in the tongue; nerve signals are then sent to the lobe. Humans can detect five tastes: , , , , and (elicited by glutamate). Much of what humans taste is really
     
     
  4. Chemoreceptor cells for (smell) line the upper, mucus portion of the nasal cavity; potentials are transmitted to neurons in the bulb, and relayed to the lobe.
     
     
  5. Vertebrates eyes focus light by changing the shape of the . The human retina contains two types of in the retina: are sensitive to dim light, while can distinguish colors.
     
     
  6. Signals from rods and cones travel from cells to cells, whose axons form the optic and transmit the signal to the brain.
     
     
    Review: Vertebrate eye
     
     
  7. Humans have an endoskeleton consisting of an skeleton and an skeleton, which are connected at by , and to muscles at .
     
     
    Review: Human Axial Skeleton
     
     
  8. Skeletal muscles are attached to the skeleton in pairs and consist of bundles of made of smaller myofibrils, which are composed of overlapping and filaments formiog repeating units.
     
     
    Review: Skeletal Muscle Structure
     
     
  9. Muscle occurs when the filaments slide past each other: the "head" of a molecule binds to an filament, forming a cross-bridge and pulling the thin filament toward the center of the .
     
     
    Review: Muscle Contraction
Chapter 50 Quizzes: Self Activities Chapter Cum. Animations     Words   Appendix    Summary   Art    Art 

Unit 8: Ecology An Introduction to Ecology and the Biosphere Review
  1. Ecology is the study of the interactions between and the environment, including both (nonliving) and (living) components.
     
     
  2. Biotic factors such as , , and other interactions among species can affect the distribution of organisms.
     
     
  3. factors that affect the distribution of organisms include sunlight, , wind, water, and soil.
  4. is a major influence on the distribution of organisms. The angle of the sun changes due to the of the Earth, leading to climate changes every year.
     
     
  5. Large bodies of water have a effect on the climate of nearby terrestrial environments. Lakes experience seasonal in temperate regions.
     
     
  6. Mountains can block winds and cast a rain on the side. The biotic and abiotic factors determine the nature of broad associations, called .
     
     
  7. biomes are divided into and biomes based on , and stratified into by light penetration, temperature, and depth. Review: Aquatic Biomes
     
     
  8. biomes are largely determined by the and the types of vegetation adapted to the and of an area. Review: Terrestrial Biomes
bio1152 Home May 25, 2007 Print Print