The brain stem is connected to the spinal cord, which is the central nerve bundle (nerve trunk) that branches out into the various areas of the outer nervous system. In addition to the central nervous system is also the peripheral nervous system, which controls autonomic functions meant to maintain vital functions of the body. The peripheral nervous system is divided into the sympathetic nervous system (exciting, alerting, fight-or-flight) and parasympathetic nervous system (relaxing).
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Sponges have no nervous systems, their middle jelly-like layers have large and varied populations of cells, and some types of cell in their outer layers may move into the middle layer and change their functions
The Endocrine system is responsible for slower metabolic changes over seconds, minutes, hours, or even years. The Nervous system is responsible for analyzing sensory information and providing an immediate, short term metabolic change. The Exocrine system is responsible for outer layer adaptation. Such as a metabolic response of secretions like sweat, or milk produced from mammary glands.
The sympathetic nervous system. The hypothalamus, in close association with the limbic system of the brain. The "fight or flight" response is the term used for the activation of the sympathetic nervous system. The two main chemicals invoved here are the neurotransmitter "norepinephrine" (noradrenaline) and the hormone "epinephrine" (adrenaline). Noradrenaline is produced in the neurones and is secreted at the synapse to exert its "sympathetic" activity on various organs throughout the body. The nervous system is also responsible for eliciting epinephrine production from the adrenal medulla (a part of the suprarenal glands situtated on the top of each kidney).
Neptune is an outer planet. It is the outermost planet in the solar system.
Nerves
the answer is nerves!
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The meninges provide an outer covering for the brain. The meninges are considered part of the nervous system.
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The peripheral sytem is the outer layering of the nervous system.It is attached to all sorts of nerves and also the spinal cord The peripheral nervous system is the part of the nervous system that controls the limbs. The peripheral nervous system contains nerves and ganglia outside of the brain and spinal cord.
the answer is nerves!
Endoderm: (most internal germ layer) gives rise to the lining of the digestive tract and the organs derived from it, such as the liver and lungs of vertebrates.Mesoderm: (middle germ layer) forms muscle, the skeletal system, and the circulatory system.Ectoderm: (most exterior germ layer) gives rise to the outer covering and, in some phyla, to the central nervous system.
-Protect the central nervous system -Responsible for nourshing the brain -Provides cushioning effect for the CNS -Support the large venous channels carrying blood from the brain toward the heart
the answer is nerves!
Sponges have no nervous systems, their middle jelly-like layers have large and varied populations of cells, and some types of cell in their outer layers may move into the middle layer and change their functions
Outer London