AP Psych Unit 1 (Part 1) Biology

The _________________ is a neuron’s reaction of either firing or not-it can’t fire more or less intensely

• threshold

• all-or-none response

• refractory period

• axon

The _____________________ is two lima bean-sized neural clusters in the limbic system that are linked to emotions

• amygdala

• hypothalamus

• limbic system

• hippocampus

The ________________ is the level of stimulation required to trigger a neural impulse

• myelin sheath

• synapse

• threshold

• absolute potential

A(n)__________ is a series of X-ray photographs taken from different angles and combined by computer into a composite representation of a slice of the brain’s structure.

• EEG

• CT Scan

• MRI

• PET

______________ support, nourish, and protect neurons

• nerves

• myelin sheath

• glial cells

• endorphins

The _____________________ is a nerve network that travels through the brainstem and controls arousal

• medulla

• cerebellum

• reticular formation

• hippocampus

The _________________ is the “little brain”. It processes sensory input, coordinates movement output and balance, and enables nonverbal learning and memory

• brainstem

• reticular formation

• medulla

• cerebellum

The ___________________ is the part of the autonomic nervous system that arouses the body, mobilizing its energy. Fight or flight

• sympathetic nervous system

• parasympathetic nervous system

___________________ carry signals out to your body so you can move.

• interneurons

• sensory neurons

• motor neurons

The _______________________ are a pair of endocrine glands that sit just above the kidneys and secrete hormones that help arouse the body in times of stress

• pituitary glad

• adreanal glands

• thyroid