ANP 214 WINTER 2005
had to have his arm amputated after an accident. He tells you that he can
sometimes still feel pain in his fingers even though the hand is gone. He
says this is especially true when he bumps the stub of his arm where it is
amputated. How can this be?
has a biking accident and injures his back. He is examined by a doctor who
notices that Harry cannot feel pin pricks in his left foot but can feel
the sensation in his right foot as well as his right and left arms and
thorax. There appear to be no problems with the motor activity in any of
his appendages. The physician tells Harry that he thinks a portion of the
spinal cord may be compressed and is causing these symptoms. Where is the
problem probably located?
individuals show allergic reactions to bee and wasp stings. Sometimes anaphylactic shock can ensue
following exposure to these venoms, characterized by constriction of the
respiratory passages and swelling of the throat. Would acetylcholine or epinephrine be more helpful in
relieving these symptoms? Why?
type of parasympathetic receptor relies upon G-protein activity? Several different types of toxins are
agonists for these types of receptors, and will therefore bind to the
receptor. What types of symptoms
might be observed in a patient suffering from poisoning by such a toxin?
your knowledge of the autonomic nervous system, describe how certain
medicines would be effective in treating hypertension (high blood
pressure). Be specific—what type
of receptors would be involved, where are they located, and what do they
- Are the effects of parasympathetic
stimulation localized and of short duration, or generalized and of long
would a molecule that blocks the action of adenyl cyclase affect the sense
of olfaction? Explain.
what the so-called “blind spot”
is. Why is it that we don’t
perceive our blind spots as “holes” in our field of vision?
examination of an effector organ shows that it receives innervation by way
of two neurons. The first is located in the spinal cord and synapses with
a second in a chain ganglion. Chemical analysis indicates that the
postsynaptic neuron releases acetylcholine and that the effector has many
cholinergic receptors. Based upon this information, what is the effector
organ most likely to be?
able to describe four visceral reflexes (two each from the sympathetic and
how you wake up from a sleep state.
would hypersecretion of GABA (gamma aminobutyric acid) by the neurons of
the cerebral nuclei would result in?
is a sensory homunculus? What do
the proportions seen in a sensory homunculus indicate?
two ways in which hypersensitivity to pain might occur.
the two types of adaptation that occur in receptors. Explain where adaptation can occur, and
give an example of each type of adaptation.
is consolidation? How can