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Where does the efferent pathways of the parasympathetic division originate from as they leave the cns?
They originate from the cranial and sacral regions of the CNS
What forms liquid cushion for the cns structures?
Cerebrospinal fluid (CSF) forms a liquid cushion around the central nervous system (CNS) structures, including the brain and spinal cord. CSF provides buoyancy, protection, and nutrient delivery to these structures. It also helps to remove waste products and maintain appropriate pressure within the CNS.
List the structures of the CNS and PNS?
Peripheral Nervous System (PNS)Contains all nerves outside of the brain & spinal cord.Somatic Nervous System (Voluntary)Two types: Sensory (or afferent) and motor (or efferent) nerves
What are located and protected within the CNS?
The 2 primary structures of the CNS are:The brain, housed in and protected by the skullThe spinal cord, housed in and protected by the vertebral column.
What are two structures of the central nervous system?
The CNS is made up of the brain and the spinal cord.
Where are the nerves and ganglia structures found?
Nerves and ganglia structures are primarily found in the peripheral nervous system (PNS). Nerves are bundles of axons that transmit signals between the central nervous system (CNS) and the rest of the body, while ganglia are clusters of nerve cell bodies located outside the CNS, serving as relay points for nerve signals. Additionally, within the CNS, there are similar structures, such as nuclei, which serve comparable functions to ganglia.
What two structures are apart of the central nervous system?
The CNS is made up of the brain and the spinal cord.
From what areas of the CNS does each division originate?
The parasympathetic originates from the brain and spinal cord. The sympathetic originates from the thoracic and lumbar spinal nerves.
What structures comprise the CNS?
The central nervous system (CNS) is comprised of the brain and the spinal cord. These structures are responsible for processing and transmitting information throughout the body, controlling various functions such as movement, sensation, and cognition.
What name refers to nerves that only originate in the brain carry messages to and from structures in the head and neck and are considered part of the peripheral system?
Cranial nervesCranial Nerves only originate in the brain and carry messages to and from structures in the head and neck.
Are all the efferent neurons motor all the afferent neurons sensory and all the CNS neurons inter neurons?
Not all efferent neurons are motor; some can be autonomic (meaning they control involuntary functions). Similarly, not all afferent neurons are sensory; some can be visceral (relaying information from internal organs). CNS neurons can include interneurons that integrate and transmit signals between sensory and motor neurons, but not all CNS neurons are interneurons, as there are also sensory and motor neurons found within the CNS.
What names referred to nerves that only originate in the brain and carry messages to and from structures in the head and neck and are considered part of the Peripheral nervous system?
Cranial nervesCranial Nerves only originate in the brain and carry messages to and from structures in the head and neck.
