The Nervous & Endocrine Systems

Front

As you are reading this question, the cells in your eyes are firing in response to the light coming from this screen. Which type of neuron is carrying this message to the brain?

Back

Sensory

Front

Which part of the neuron receives incoming messages from other cells?

Back

Dendrites

Front

What is an axon?

Back

The extension of a neuron that carries messages away from the cell body.

Front

What chemicals does the nervous system use as its messengers?

Back

Neurotransmitters

Front

José has just played a long, bruising football game but feels little fatigue or discomfort. His lack of pain is most likely caused by the release of:

Back

Endorphins

Front

Which neurotransmitter is most closely associated with regulating mood, sleep, appetite, and is often a target for antidepressant medications?

Back

Serotonin

Front

Certain drugs bind to neurotransmitter receptors and produce effects similar to the neurotransmitter itself. What type of molecule are these drugs considered to be?

Back

Agonists

Front

The brain and spinal cord make up which component of the nervous system?

Back

Central

Front

Which division of the peripheral nervous system governs involuntary functions, such as your heart beating?

Back

Autonomic

Front

The autonomic nervous system is divided into two parts that often work in opposition to each other. Which part prepares the body for stressful or emergency situations by triggering the "fight-or-flight" response?

Back

Sympathetic