Exam 3: A: Biological Psychology

After surgery severing the corpus callosum,patients are unable to walk or to care for the physical needs of everyday life.

The brain stem's two main structures are the medulla and the pons.

An action potential is a chemical substance that alters the polarization of a receiving neuron.

A heritability estimate around .53 for a trait indicates that 0.53% of the individual differences in the trait can be attributed to genetic factors in the population that was studied.

Dizygotic twins are more likely to share a trait with high heritability than are non-twin siblings.

The autonomic nervous system controls skeletal muscles.

Transcranial magnetic stimulation (TMS)uses a powerful magnetic field to temporarily stimulate or inactivate neural circuits.

Neurons greatly outnumber glial cells in the brain.

Serotonin affects neurons involved in sleep,appetite,and mood.

Humans have 46 pairs of chromosomes.