Nervous system

Without the nervous system, you couldn't

• walk

• breathe

• think

• all of the above

Neurotransmitters are typically stored in which of the following parts of a neuron?

• nodes of Ranvier

• myelin sheath

• terminal buttons

• soma

• axon

In the neuron, the main function for the dendrites is to

• release neurotransmitters to signal subsequent neurons

• preserve the speed and integrity of the neural signals as it propagates down the axon

• perform the metabolic reactions necessary to nourish and maintain the nerve cell

• receive input from other neurons

• connect the cell body to the axon

The process of a neuron firing is called

• action potential

• inhibitory potential

• excitatory potential

• graded potential

• neuron potential

While running a marathon, Emily experienced an increase in the body’s natural painkiller. Which of the following chemicals has been associated with the alleviation of pain?

• serotonin

• GABA

• melatonin

• endorphins

• acetylcholine

The fact that a neuron either fires at full strength or does not fire at all is the result of which of the following?

• depolarization

• all-or-nothing principle

• level of excitation

• refractory period

• axon hillock processing

Which of the following is an example of the functioning of the somatic nervous system?

• Dana just finished lunch, and her digestive system is working to process the food

• Feelings of embarrassment caused Alex’s face to turn red

• While he was running, Steve’s heart rate increased

• Aleshia began to perspire when she thought about her upcoming test

• Karly picked up her pencil after it had fallen to the floor

What are the 3 mains parts of the Nervous System

• Brain, heart, blood vessels

• Blood Vessels, spinal cord, blood

• Brain, Spinal Cord, Neurons

• Heart, blood vessels, and blood

What makes up the Central Nervous System?

• Blood and Heart

• Spinal Cord

• Nerves

• Brain and Spinal Cord

What are the two parts of the nervous system? 

• The brain and spinal cord
• The central nervous and peripheral nervous system 
• The neurons and the dendrites
• The cerebrum and the medulla