The brain and spinal cord are covered by three layers of meninges, or protective coverings: the dura mater, the arachnoid mater, and the pia mater. Cerebrospinal fluid surrounds the brain, cushioning it and providing shock absorption to prevent damage.
What are the protective structures found in the central nervous system?
First, the entire CNS is enclosed in bone. The brain is protected by the skull, while the spinal cord is protected by the vertebra of the spinal column. The brain and spinal cord are both covered with a protective tissue known as meninges.
What are the 3 structures that protect the brain?
Between the skull and brain is the meninges, which consist of three layers of tissue that cover and protect the brain and spinal cord. From the outermost layer inward they are: the dura mater, arachnoid and pia mater.
What are the protective coverings of the CNS and PNS structures?
The central nervous system (CNS) is made up of the brain, a part of which is shown in Figure 16.19 and spinal cord and is covered with three layers of protective coverings called meninges (from the Greek word for membrane). The outermost layer is the dura mater (Latin for “hard mother”).
What are the three structures of the nervous system?
According to the National Institutes of Health, the central nervous system is made up of the brain, spinal cord and nerves. The peripheral nervous system consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect to one another and to the central nervous system.
What is the purpose structure and function of the central nervous system?
The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
What are the four different nervous systems?
The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body.
Autonomic Nervous System
- the sympathetic nervous system.
- the parasympathetic nervous system.
- the enteric nervous system.
What 4 Things protect the brain?
The brain is protected from injury by the skull, meninges, cerebrospinal fluid and the blood-brain barrier.
Which part of the brain controls heartbeat?
The brain stem, at the bottom of the brain, connects the cerebrum with the spinal cord. It includes the midbrain, the pons, and the medulla. It controls fundamental body functions such as breathing, eye movements, blood pressure, heartbeat, and swallowing.
Which is the largest part of the brain?
Which of the following is the best example of the function of the peripheral nervous system?
The best example of the peripheral nervous system is that it connects the central nervous system to the rest of the body. Explanation: The ‘peripheral nervous system’ connects the ‘central nervous system’ to the various organs of the human body and to the limbs and skin.
Why is the CNS so well protected?
First, the bones of the skull enclose and house the brain, while the bones of the vertebral column protect the spinal cord. Underneath the skeletal structures, the CNS is protected by membranes made by connective tissue, called meninges, that surround, support, stabilize and partition the nervous tissue.
What are the two divisions of the autonomic nervous system?
The autonomic nervous system has two main divisions:
What are the six main structures of the central nervous system?
These include structures such as the frontal and temporal lobes, the thalamus, the cerebellum, the putamen, mamillary bodies and fornix, and a convolution above the corpus callosum known as the cingulate gyrus.
Which organ is part of our nervous system?
The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
What is the main function of nervous system?
At a more integrative level, the primary function of the nervous system is to control and communicate information throughout the body. It does this by extracting information from the environment using sensory receptors. This sensory input is sent to the central nervous system, which determines an appropriate response.