Cremasteric reflex
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The cremasteric reflex is a superficial reflex observed in the human cremaster muscle & testicle.
Area A (in orange) represents the area of sensory fibers controlled by the genitofemoral nerve; area B (in green) represents that controlled by the ilioinguinal nerve; arrow C (in red with blue outline) shows the location where the skin must be stroked to elicit this reflex.
Axon
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An axon is a long slender projection of a nerve cell or neuron found in most animals that typically conducts electrical impulses known as action potentials away from the nerve cell body. The function
Cremasteric reflex
…motor fibers from two different nerves. When the inner thigh is stroked, sensory fibers of the ilioinguinal nerve are stimulated. These activate the motor fibers of the genital branch of the genitofemoral nerve which causes the cremaster muscle to contract and elevate the testis. In some males, this reflex may…
A dissected human brain, showing grey matter and white matter
TEM of a myelinated axon in cross-section
Synaptic connections from an axon
Axon of nine-day-old mouse with growth cone visible