Neuroscience Quiz 3
The fact that all colors on older televisions were created by combining only three different colors of light supports the ____ theory of color vision.
trichromatic
What would be the likely outcome of a person who was blind at birth, and had vision restored later in life by the removal of cataracts (clouded lenses)?
trouble describing the shapes of objects
The visual paths in the temporal cortex collectively are referred to as the ____.
ventral stream
Why is it that all neurons in a healthy adult brain have made appropriate connections?
If an axon does not make the appropriate connections by a certain age, it dies.
A strand of DNA serves as a template (model) for the synthesis of ____.
RNA
What modern day practice helps prevent an inadequate production of thyroid hormones?
iodized salt
The most common form of color vision deficiency is due to ____.
long- and medium-wavelength cones making the same photopigment
Changes in single genes are called ____.
mutations
Organisms that help those they recognize as capable of returning the favor are displaying ____.
reciprocal altruism
V1 neurons would be most strongly activated by viewing ____.
repeating stripes on a flag
Closed head injury results in damage partially because of ____.
rotational forces that push the brain against the inside of the skull
After damage to a set of axons, neurotrophins induce nearby ____.
uninjured axons to form new branches
Why is it that every axon in an adult mammal has a target cell (muscle cell or other neuron) with which it makes synaptic contact?
Axons that fail to find a target cell die
Which statement characterizes the fovea?
It has the greatest perception of detail.
In comparison to cones, rods ____.
are more sensitive to dim light
An example of a sex-linked trait is ____.
color vision deficiency
After the migrating neuron reaches its destination, ____ begin to form.
dendrites
In the vertebrate retina, which cells are responsible for lateral inhibition?
horizontal cells
Damage to the magnocellular pathway would most likely lead to the loss of ____.
motion perception
Axons from the lateral geniculate extend to which area of the cerebral cortex?
occipital lobe