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image Image Limbic system structures of the human brain
Structures of the limbic system

The limbic system influences behaviour tied to survival, such as feeding, reproduction, and responses to threats.

28.05.2026 Fundamentals of Neurobiology
image Image Diagram of a motor pool of a muscle
A motor pool of a muscle

A motor pool of a muscle is formed by a group of motor units innervating all the muscle fibres in that muscle. Motor units vary in size. Small motor units innervate fewer muscle fibres and control fine movements, e.g., in the eyes and fingers.

28.05.2026 Fundamentals of Neurobiology
image Image A diagram of muscle innervation
Types of motor neuron

Precise coordination between alpha and gamma motor neurons is required for neuromechanical efficiency during the execution of movements.

28.05.2026 Fundamentals of Neurobiology
image Image Diagram of signalling pathways of the cerebellum
Signalling pathways of the cerebellum

The cerebellum represents only 10% of the total volume of the brain, but contains over 50% of the brain’s neurons.

28.05.2026 Fundamentals of Neurobiology
image Image Acetylcholine signalling in the human brain, sagittal section
Acetylcholine signalling

Acetylcholine is used throughout the nervous system at skeletal neuromuscular junctions, and within the central nervous system.

28.05.2026 Fundamentals of Neurobiology
image Image Image showing the neurocircuitry of a reflex
The neurocircuitry of a reflex

A reflex is a rapid, automatic response to a stimulus. Sensory signals travel through the spinal cord to activate muscles and produce movement.

28.05.2026 Fundamentals of Neurobiology

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