Axon
A Long Extension Of A Neuron That Carries Electrical Signals Away From The Cell Body.

Neuron
A Specialized Cell That Transmits Electrical And Chemical Signals In The Nervous System.

Nervous System
An Organ System That Detects Stimuli And Coordinates Responses Using Neurons And Neurotransmitters.

Neurotransmitter
A Chemical Released By Neurons To Transmit Signals Across Synapses In The Nervous Organ System.

Hormone
A Chemical Messenger Produced By Glands That Regulates Processes In Organ Systems.

Signal Transduction
A Series Of Chemical Reactions Triggered When A Signal Molecule Binds To A Receptor Protein.

Receptor Protein
A Protein On The Cell Membrane Or Inside A Cell That Binds To Signaling Molecules.

Cell Signaling
The Process By Which Cells Communicate Using Chemical Signals Such As Hormones And Neurotransmitters.

Okazaki Fragment
A Short Segment Of Dna Synthesized On The Lagging Strand During Dna Replication.

Replication Fork
A Y Shaped Region Formed During Dna Replication Where The Double Helix Is Unwound.