AP test 1
What molecule is activated from the binding of an odorant to transmembranous receptor molecules on olfactory hairs?
D. G protein
The blink reflex is designed to
keep the eyes moist.
Arrange the following in correct sequence: (1) gustatory cell depolarizes (2) action potential stimulated in gustatory neurons (3) food substance dissolves in saliva (4) neurotransmitter released by gustatory cell (5) food substance enters taste pore and attaches to receptor on gustatory hair
3, 5, 1, 4, 2
Arrange the following to reflect the correct sequence an action potential would follow to reach the olfactory cortex of the brain (1) olfactory bulb (2) olfactory cortex (3) olfactory epithelium (4) olfactory tract
3,1,4,2
Why does inhaling deeply and slowly through the nose help to identify an odor?
A. More air containing the odor is brought into contact with the olfactory epithelium.
Which of the following is NOT a cell type found in taste buds?
A. mitral cells
The medial olfactory area...
A. provides emotional reactions to odors.
Taste buds..
Can only perceive tase if the molecules are in solution
13. Which of the following is NOT a primary odor class?
A. umami
Which of the following statements is false?
B. Sensitivity of taste buds for sweet taste is very high.
In order for a molecule to be detected by the olfactory neurons, it must
C. be dissolved in fluid covering the olfactory epithelium.
Some thyroid disorders are characterized by an increase in the width of the palpebral fissure. This would be an increase in the distance between the
C. eyelids.
You are an airborne molecule that dissolves in the fluid covering the olfactory epithelium. Which of the following must you do in order to depolarize neurons in the olfactory epithelium?
D. bind to receptor molecules on the olfactory hair membrane
Which of the following structures is considered to be an accessory structure of the eye?
D. palpebrae
To which of the following substances would the taste buds be most sensitive?
D. quinine (tonic) water
The olfactory cortex is located in the _____ lobe and the secondary olfactory areas are located in the ___ lobe.
D. temporal, frontal
The ability of the olfactory system to adapt to a particular odor may involve
D. the intermediate olfactory area sending inhibiting impulses to the olfactory bulb.
Which of the following statements is true?
Damaged olfactory neurons are replaced.
12. What ion(s) cause(s) depolarization in olfactory neurons?
E. Both Na+ and Ca2+
The most sensitive taste buds are found in _____ papillae.
E. foliate
Following a stroke, Harriet has impaired sense of taste on one side of the tip of her tongue, indicating the part of her brain that was affected must communicate with the
Facial Nerve
Taste buds are not associated with _____ papillae.
Filiform
The receptor cells for which of the following special senses are bipolar neurons?
Smell
Which of the following special senses is relayed directly to the cerebral cortex without going to the thalamus?
Smell
Which of the special senses contains receptor neurons that are the only nerve cells in direct contact with the outside environment?
Smell
15. Sensory structures that detect taste are
Taste Buds
Which type of taste has the lowest threshold?
bitter
Which tastant is NOT correctly matched with its process of depolarization?
bitter - K+
Palpebrae is another name for the
eyelids
You taste a sauce with the "tip of your tongue". These taste sensations would be carried via the _____ cranial nerve.
facial (VII)
The sense of taste is called
gustation
The taste cortex is located in the ________ lobe.
parietal
The newest taste to be described is
umami
