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