It is divided into two parts. The sympathetic nervous system mobilizes energy and resources during times of stress and arousal, while the parasympathetic nervous system conserves energy and resources during relaxed states, including sleep.
What are the two divisions of the nervous system and how do they work together?
There are two major divisions of the nervous system: the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system is made up of the brain, the spinal cord, and the retina and controls essentially all the functions that keep you alive and allow you to experience life.
What are the 2 main subdivisions of the nervous system?
The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
What are the two main subdivisions of the nervous system quizlet?
What are the two main subdivisions of the nervous system? Central nervous system and peripheral nervous system.
How do the CNS and PNS work together to control the body?
If the central nervous system is the command centre of the body, the peripheral nervous system (PNS) represents the front line. The PNS links the CNS to the body’s sense receptors, muscles, and glands.
What are the three parts of the autonomic nervous system?
The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal. It contains three anatomically distinct divisions: sympathetic, parasympathetic and enteric.
What is nervous system and its function?
The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.
How is nervous system divided?
Structural Divisions of the Nervous System. The nervous system can be divided into two major regions: the central and peripheral nervous systems. The central nervous system (CNS) is the brain and spinal cord, and the peripheral nervous system (PNS) is everything else (Figure 8.2).
What is difference between CNS and PNS?
The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all of the nerves that branch out from the brain and spinal cord and extend to other parts of the body including muscles and organs.
What are the 4 parts of the peripheral nervous system?
- 1.1 Somatic nervous system. 1.1.1 Cervical spinal nerves (C1–C4) 1.1.2 Brachial plexus (C5–T1) 1.1.3 Lumbosacral plexus (L1–Co1)
- 1.2 Autonomic nervous system. 1.2.1 Sympathetic nervous system. 1.2.2 Parasympathetic nervous system. 1.2.3 Enteric nervous system.
What makes up the white matter in the central nervous system quizlet?
In the CNS, where is white matter organized? … White matter is composed of bundles of myelinated axons, which connect various gray matter areas of the brain to each other, and carry nerve impulses between neurons.
What is the Neurilemma and what is its function?
Neurilemma serves a protective function for peripheral nerve fibers. Damaged nerve fibers may regenerate if the cell body is not damaged and the neurilemma remains intact. The neurilemma forms a regeneration tube through which the growing axon re-establishes its original connection.
What are the three general functions of the nervous system quizlet?
What are the three general functions of the nervous system? sensory, integrative, and motor.
What do CNS and PNS have in common?
The CNS includes the brain and spinal cord. The brain is the body’s “control center.” The CNS has various centers located within it that carry out the sensory, motor and integration of data. … The PNS is a vast network of spinal and cranial nerves that are linked to the brain and the spinal cord.
How does nervous system affect behavior?
The central nervous system has a fundamental role in the control of behavior. It contains the brain and the spinal cord which are both encased in bone which shows their importance. Both the brain and spinal cord receive signals from the afferent neurons and send signals to muscles and glands through efferent neurons.
Which part of nervous system controls involuntary actions?
autonomic nervous system