There are two vestibulospinal pathways; medial and lateral. They arise from the vestibular nuclei, which receive input from the organs of balance.
What are the two main types of somatic motor pathways?
The lateral component of the somatic motor system controls the premotor interneurons and motoneurons of the distal muscles. This component consists of two pathways—the lateral corticospinal and the rubrospinal pathways.
What are the ventromedial pathways?
The components of the ventromedial descending spinal pathways are the vestibulospinal tract, the tectospinal tract, the pontine reticulospinal tract, and the medullary reticulospinal tract. The lateral pathways are involved in the voluntary movement of the distal musculature.
What are 1st 2nd and 3rd order neurons?
First Order Neurons: Detect a stimulus and transmits a signal to the spinal cord. Second Order Neurons: Continues as far as the gateway-the thalamus- at the upper end of the brainstem. Third Order Neurons: Carries the signal the rest of the way to the sensory region of the cerebral cortex.
What are the simplest nerve pathways in the body?
The simplest type of neural pathway is a monosynaptic (single connection) reflex pathway, like the knee-jerk reflex. When the doctor taps the right spot on your knee with a rubber hammer, receptors send a signal into the spinal cord through a sensory neuron.
Are neurons only in the brain?
Neurons are born in areas of the brain that are rich in concentrations of neural precursor cells (also called neural stem cells). These cells have the potential to generate most, if not all, of the different types of neurons and glia found in the brain.