Ch 13 Special Senses Flashcards
Receptors for odorants are
Olfactory hairs
What must be true in order to detect an odor?
A. The odorant must dissolve in mucus of the nasal cavityB. The dissolved odorant binds to receptors on olfactory hairsC. A G protein is activated when an odorant binds to its receptor which opens sodium and calciumgatesD. All of the choices are true
What ion channels are opened to produce an action potential in olfactory neurons?
Calcium and sodium
Which of the following is NOT true of olfactory neurons?
They are located just inside the nasal cavity
Which of the following is NOT one of the seven primary odors?
Salty
What is the function of basal cells in the olfactory epithelium?
Regenerate the olfactory epithelium and neurons
Odors can produce strong emotional reactions and memories because the olfactory cortex is part ofthe
Limbic system
Taste buds are located on structures called
Papillae
Which of the following is NOT a specialized epithelial cell found in taste buds?
A. Chorda tympaniB. Taste cellsC. Basal cellsD. Supporting cells10.
Which of the following is NOT a primary taste?
A. UmamiB. SweetC. SourD. PeppermintyE. Bitter
Which primary odor serves to protect from poisons?
Bitter
Receptors for odorants are
Olfactory hairs
What must be true in order to detect an odor?
A. The odorant must dissolve in mucus of the nasal cavityB. The dissolved odorant binds to receptors on olfactory hairsC. A G protein is activated when an odorant binds to its receptor which opens sodium and calciumgatesD. All of the choices are true
What ion channels are opened to produce an action potential in olfactory neurons?
Calcium and sodium
Which of the following is NOT true of olfactory neurons?
They are located just inside the nasal cavity
