Physiological Psych Final Exam
The all-or-none law states that ____
A neuron produces an action potential of maximal strength, or none at all
Which part of the brain would be most responsible for LARGE motor movements, such as walking in a straight line?
Cerebellum
An increase in time spent in the center of the box in the open field test suggests an _______ in ______
Decrease; anxiety
What principle did Cajal come up with that revolutionized neuroscience?
Explain it
The hypothalamus is ______ to the thalamus
Inferior
If I opened an ion channel for calcium, based on its concentration gradient, what would result? Calcium flowing ______ the neuron, causing ______
Into; depolarization
If I opened an ion channel for chloride, based on its concentration gradient, what would result? Chloride flowing ____ the neuron, causing ______
Into; the neuron is less likely to fire
Suppose someone has a genetic defect that prevents the formation of horizontal cells in the retina. Which visual phenomenon is most likely to be impaired?
Lateral inhibition
_____ is most closely related to when you last ate while ____ is most closely related to how much you last ate
OEA; CCK
Which theory of color vision best explains the after-image effect, where you see the opposite color after staring at a specific color for a long time?
Opponent-Process
If I opened an ion channel for potassium, based on its concentration gradient, what would result? Potassium flowing _______ the neuron, causing ________
Out of; an IPSP
Which brain area would be responsible for changing your body's set point?
POA/AH
An action potential is caused by voltage-gated channels opening and closing. ______ causes the neuron to hyperpolarize and _______ causes the neuron to depolarize
Potassium; sodium
Which of the following is the first step in the process of hypovolemic thirst?
Production of renin
Which of the following is the best description of reuptake?
Recycling of neurotransmitters
Which of the following would be the fastest to occur based on type of receptors?
Salty taste
This type of glial cell is most likely found in the peripheral nervous system
Schwann cells
Which term best describes the process of a neuron collecting information from multiple other neurons at one time, resulting in a possible action potential?
Spatial summation
Which part of the neuron is most closely linked to voltage-gated calcium channels?
Vesicles