1)Unlike hair receptor cells in the cochlear or in the vestibular system, taste receptor cells are replaced every 10-14 days

1)Unlike hair receptor cells in the cochlear or in the vestibular system, taste receptor cells are replaced every 10-14 days.

2)The perception of "salty" is initiated when sodium ions from salty food enter taste receptor cells through sodium channels in the cell membrane.

3)Olfactory neurons in the olfactory epithelium last a lifetime, just like hair cells in the ear and vestibular system.

1. The very center of the foveal area contains only rods.
2. The first three layers of the retina, up to but not including ganglion cells, produce only graded potentials.
3. Human females have a behavioral estrus period during which they are receptive to sexual intercourse, but outside of which they are not receptive.
4. In the Kluver-Bucy syndrome, monkeys with bi-lateral damage to the amygdala show decreased sensitivity to fear.
5. The overall effect of NMDA and AMPA activation at a synapse is to make the synapse more responsive to further stimulation.
6. For practical purposes, there is an effective bound to long term memory capacity.