One of the reasons for LBW infants in sub-Saharan Africa is food shortages

The _______ is the voltage level at which an action potential is triggered in a patch of axon membrane

a. resting membrane potential b. hyperpolarization event c. threshold of excitation d. rate level e. refractory period

People with generalized anxiety disorder:

A) suffer from persistent anxiety that cannot be attributed to a phobic object, situation, or activity. B) show absence of autonomic arousal that leads to anxiety attacks. C) are typically afraid of suffocation. D) have extreme mood swings from ecstatic elation to deep depression, including suicidal tendencies.