Chapter 3 Quiz

________ is the electrical signal that typically moves from the cell body down the axon to the axon terminals.

action potential

The Peripheral Nervous System has two major subdivisions. They are the:

autonomic and somatic nervous systems

Each neurotransmitter must fit into the receptor site in a:

lock and key fashion

Axons may be coated with a fatty substance known as the:

myelin sheath

Which brain lobe controls one's sense of vision?

occipital

The tragic case of Phineas Gage showed that ___was governed by the_____.

personality/frontal lobe

Wernicke's area is located in the_____lobe.

temporal

The ________ of a neuron contain ________ that house neurotransmitters, the chemical messengers of the nervous system.

terminal buttons; synaptic vesicles

Which system produces hormones?

Endocrine System

SSRI drugs work by:

blocking the reuptake of serotonin

The brain and spinal cord comprise the:

central nervous system

Which is the correct order?

dendrites, cell body, axon, terminal buttons, synapse

Parkinson's disease, a progressive nervous system disorder, is associated with low levels of_____.

dopamine

_____ scans create pictures of the living, active brain.

positron emission tomography (PET)

Which is not one of the lobes of the brain?

regional

Once a neurotransmitter has done its job it is pulled back into the terminal buttons. This process is termed:

reuptake

You can feel a pen in your hand. This is because of:

sensory nerves

Person Z encounters a snake in his driveway. His heart rate and blood pressure increase and his pupils dilate. Whoa! Which nervous system is responsible for these physiological changes?

sympathetic

The space between two neurons is called the ________.

synapse

Neurons are the central building blocks of the nervous system, _____ strong at birth.

100 billion