Neurobiology

Which occurs first in embryonic development?

• neurulation
• gastrulation
• somite migration
• development of spina bifida

A dendrite conducts nerve impulses ________ the cell body.

• away from 
• towards
• around, bypassing
• both towards and away from

Schwann cells produce layers of membrane containing myelin, which provides:

• nutrition
• insulation
• immunity
• DNA transcription

Gaps in the myelin sheath are called _______.

• nodes of Ranvier
• synapses
• Na+/K+ pumps
• fenestrations

long extension of neuron that sends information

• dendrite
• cell body
• axon
• nodes of Ranvier

This is the electrical charge that travels down an axon when a neuron is firing

• Resting Potential
• Action Potential
• Threshold
• Refractory Period

The junction between 2 neurons is called the

• dendrite
• axon
• node of Ranvier
• synapse

What is the central nervous system

• The centre of each nerve cell
• The nerves that control the main functions of the body, such as heart rate and blood pressure
• The brain and spinal cord
• The nerves that prepare the body for fight or flight response

The portion of the nervous system that is considered involuntary is the ?

• Central nervous system
• Sensory nervous system
• Autonomic nervous system
• Motor nervous system

The neurotransmitter that signals muscle contraction is called...

• Acetylcholine
• Myosin
• Actin
• Calcium