_____ are chemical messengers released from a neuron by an action potential.

This occurs when a sending neuron reabsorbs or takes back its neurotransmitters.

These are your body’s natural painkiller.

A(n) _______ increases a neurotransmitters actions by mimicking.

A(n) ________ decreases a neurotransmitters actions by blocking.

______________ sense the outside world and bring it into your body.

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

___________ are found in your brain and spinal cord and process information.

A ___________ is a nerve cell and is the basic building block of the nervous system

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

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

The______________ is a neural impulse-a brief electrical charge that travels down an axon.

The__________ is the part of a neuron that contains the nucleus; the life-support center

The _______________ is the time in which a neuron cannot fire; a resting pause after an action potential

________ are the part of a neuron that receives messages; they “listen”

The _______________ is part of a neuron that passes messages on to other neurons; it “speaks”

______________ support, nourish, and protect neurons

_________________ is a fatty tissue layer that surrounds the axon allowing faster neural impulse transmission.

_______________ are bundled axons that form neural cables connecting the CNS with muscles, glands, and sense organs.

The _________________ is made up of the brain and spinal cord.

A(n) __________ is an amplified recording of the waves of electrical activity sweeping across the brain’s surface

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.

A(n) __________ uses magnetic fields and radio waves to produce images of soft tissue-shows brain anatomy

A(n) __________ is a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task

A(n)__________ is a technique for revealing blood flow and, therefore, brain activity by comparing successive MRI scans-shows function and structure

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

The ___________________ controls heartbeat and breathing; located at base of brainstem

The ___________________ is part of the peripheral NS that controls the body’s skeletal muscles

The ___________________ is the part of the autonomic NS that calms the body to conserve energy. Rest and digest

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

A ___________________ is tissue destruction

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

The ____________________ is the most influential gland. Controlled by the hypothalamus, it regulates growth and controls the other glands

The _________________ is the brain’s sensory control center located at the top of the brainstem. It directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla

The ______________________ is the neural system that is located below the cerebral hemispheres and is associated with emotions and drives

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

The _____________________ directs eating, drinking, body temperature, and is linked to rewards

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

The _____________________ is a neural center located in the limbic system that helps process for storage explicit memories of facts and events.