quiz 2

___ are specialized cells that carry sensory information, transmit signals to muscles and organs, and carryout operations involved in thinking, feeling, and acting.

Part of the neuron that transmits information over long distances

Extensions that branch out from the cell body to receive information from other neurons

Part of a neuron that contains the nucleus

connection point between two neurons

the cell membrane of a neuron is a double layer made up of:

one key function of the protein channels in a cell membrane is to:

When a neuron is at rest, the inside of the neuron is

the sodium- potassium pump forces sodium ions__the cell and potassium ions__the cell

An__is an abrupt depolarization of the neuron’s membrane, allowing the neuron to transmit signals over long distances

Glial Cells produce___, a fatty tissue that wraps around axons to insulate them

Which of the following statements about neuronal conduction and myelinated neurons is true?

___ are chemical messengers released from axon terminals into the synapse. They dock with specialized proteins receptors on an adjacent neuron

When a neurotransmitter reaches a receptor, it can cause sodium ion channels to open. The incoming rush of sodium ions partially depolarizes (or hypopolarizes) the cell, making an action potential more likely. This local change in electrical charge is called an___

Where do graded potentials like EPSPs and IPSPs get converted into action potentials?

After delivering its message, and neurotransmitter must be deactivated. How does this naturally occur?

___ is a hormone released during stress. In the brain, it functions as a neurotransmitter to increased arousal and attention to events in the environment. Research suggests that plays a role in depression

___Is a neurotransmitter that contributes to motor control. It also plays an important role in pleasure and reward, and promotes the pleasurable effects of food, sex, and abused drugs. Research suggests it plays a role in schizophrenia and Parkinson’s disease

Which of the following is the primary excitatory neurotransmitter in the brain?