Unit 3 Psychology - Nervous System

Part of a neuron that receives information from other neurons

• axon

• dendrites

• myelin sheath

• synapse

Tags

NGSS.MS-LS1-2

A signal or messenger molecule that transmits nerve impulses across synapses

• neuron

• neurotransmitter

• nerve

• action potential

What contains the nucleus of the neuron?

• Terminal Bouton

• Soma

• Dendritic spine

• Myelin Sheath

Tags

NGSS.MS-LS1-2

What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?

• Axon
• Dendrites
• Node of Ranvier
• Myelin Sheath

Tags

NGSS.MS-LS1-2

How are efferent nerves best described?

• Nerves that originate in the periphery and carry signals to the spinal cord

• Nerves that originate in the brain and carry signals to the spinals cord

• Nerves that originate in the periphery and carry signals to the brain

• Nerves that originate in the central nervous system and carry signals to the periphery

A dog is startled by a gunshot. Which of the following sympathetic effects are most likely to occur?

• Constriction of the pupils, increased heart rate, and urination

• Dilation of the pupils, increased heart rate, and urination

• Dilation of the pupils, increased heart rate, and lack of urination

• Constriction of the pupils, decreased heart rate, and lack of urination

Tags

NGSS.MS-LS1-8

The neurotransmitter norepinephrine stimulates fight or flight reactions in what system?

• Parasympathetic system

• Sensory neuron system

• Somatic motor neuron system

• Sympathetic system

Where is the autonomic division of the nervous system found?

• As a part of the peripheral nervous system

• As a part of the central nervous system

• In the spinal cord

• In the brain

The autonomic nervous system is divided into what branches?

• Somatic and sympathetic branches

• Somatic and parasympathetic branches

• Sympathetic and parasympathetic branches

• Sympathetic and sensory branches

The central nervous system is made up of what parts?

• Brain and spinal cord

• Brain only

• Nerves only

• Nerves and spinal cord