Casey gets up one morning after only a few hours of sleep and heats up some water for tea in a pot with a noninsulated handle. As he picks up the pot by the handle a few minutes later, he drops it with a crash. Which part of Casey's nervous system causes him to drop the pot?
a. substantia nigra and sensory neurons
b. spinal cord, sensory neurons, and motor neurons
c. cerebral cortex and motor neurons
d. amygdala and sensory neurons
Question 2
You have been up all night studying for an important midterm examination and are exhausted. As you reach for your hot chocolate, you accidentally touch the hot burner on the stove. You quickly pull your hand away from the burner. Which statement about your action is true?
a. The medulla oblongata and cerebellum played major parts in your response.
b. The reflexive command came from the spinal cord.
c. Glial cells did most of the work necessary to move your hand.
d. Your forebrain sent a direct command to your hand.
The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
Mechanoreceptors in the lateral line system that detect changes in water movement.
Using a water-based cleaning system helps reduce the hazards from using strong chemicals.
Diversion of surface water
A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is:
How humans maintain homeostasis with respect to water and ions