Which Spanish explorer explored Mexico and discovered the Grand Canyon? what did francisco coronado discover.
What is the space within the meninges of the spinal cord that contains the cerebrospinal fluid quizlet?
Subarachnoid space – Space between the arachnoid mater and the innermost covering of the spinal cord. It contains Cerebrospinal fluid.
The subarachnoid space within the meninges contains cerebrospinal fluid. Interneurons are specialized to carry impulses from sensory cells into the brain or spinal cord.
Function. In conjunction with the other meningeal membranes, pia mater functions to cover and protect the central nervous system (CNS), to protect the blood vessels and enclose the venous sinuses near the CNS, to contain the cerebrospinal fluid (CSF) and to form partitions with the skull.
The classic view has been that a so-called subdural space is located between the arachnoid and dura and that subdural hematomas or hygromas are the result of blood or cerebrospinal fluid accumulating in this (preexisting) space.
Terms in this set (91) What is the spinal cord? A nerve column that extends from the brain into the vertebral canal.
Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.
The meningocele is a protrusion of a spinal fluid-filled sac of meninges through a bony defect in the posterior elements of the spine without associated neural tissue herniation.
ADVERTISEMENTS: The pia mater consists of epi-pia which lines the arachnoid andpia-glia (pia intima) which covers the brain surface. Both epi-pia and pia-glia are connected by strands of pial cells across the subarachnoid space. No sub-pial space intervenes between the pia mater and the underlying brain surface.
The pia mater of the spinal cord is comprised of collagen and reticular fibers. The reticular tissue is wrapped closely around the spinal cord and passes posteriorly into the anterior median fissure. The collagen fibers are external to the reticular fibers forming bundles.
The pia mater is the meningeal envelope that firmly adheres to the surface of the brain and spinal cord. … It is a very thin membrane composed of fibrous tissue covered on its outer surface by a sheet of flat cells thought to be impermeable to fluid.
Most CSF is formed in the cerebral ventricles. Possible sites of origin include the choroid plexus, the ependyma, and the parenchyma. Anatomically, choroid plexus tissue is floating in the cerebrospinal fluid of the lateral, third, and fourth ventricles.
What is the spinal cord? the part of the central nervous system that originates in the brain, exdtends down to the lower extramity of the trunk and is protected by the spinal column.
Terms in this set (10) The cell bodies of motor neurons are located in the ventral horn gray matter of the spinal cord. The axons of these motor neurons leave the spinal cord through the ventral root and travel to the periphery to innervate skeletal muscles.
The spinal cord provides a vital link between the brain and the rest of the body. The spinal cord and spinal nerves are a pathway for sensory and motor signals. The spinal cord and nerves are also responsible for specific reflexes which are our quickest reactions to a stimulus.
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The subarachnoid space is the interval between the arachnoid membrane and the pia mater. It is occupied by delicate connective tissue trabeculae and intercommunicating channels containing cerebrospinal fluid (CSF) as well as branches of the arteries and veins of the brain.
Like the brain, the spinal cord is covered by three connective-tissue envelopes called the meninges. The space between the outer and middle envelopes is filled with cerebrospinal fluid (CSF), a clear colorless fluid that cushions the spinal cord against jarring shock. Also known simply as the cord.
The temporal lobe is located on the side of the head (temporal means “near the temples”), and is associated with hearing, memory, emotion, and some aspects of language. The auditory cortex, the main area responsible for processing auditory information, is located within the temporal lobe.
Meningocele typically causes mild problems, with a sac of fluid present at the gap in the spine. Myelomeningocele, also known as open spina bifida, is the most severe form.
The subarachnoid space is the interval between the arachnoid membrane and the pia mater. It is occupied by delicate connective tissue trabeculae and intercommunicating channels containing cerebrospinal fluid (CSF) as well as branches of the arteries and veins of the brain. The cavity is small in the normal brain.
A column of nerve tissue that runs from the base of the skull down the center of the back. It is covered by three thin layers of protective tissue called membranes. The spinal cord and membranes are surrounded by the vertebrae (back bones).
The term “pia mater” means “tender matter.” It is composed of delicate connective tissue and has many tiny blood vessels. The pia mater is the only layer that clings tightly to the brain and follows all of its convolutions. Cerebral arteries and veins travel in the subarachnoid space, completely enveloped by pia mater.
The epidural space is the area between the dura mater (a membrane) and the vertebral wall, containing fat and small blood vessels. The space is located just outside the dural sac which surrounds the nerve roots and is filled with cerebrospinal fluid.
Arachnoid Mater Its structure consists of a superficial mesothelial layer below the dura, a central layer composed of cells conjoined by many junction proteins, and a deep layer of less tightly packed cells with many collagen fibers within their intercellular space.
The spinal dura mater is a fibrous, non-adherent, tough layer surrounding the spinal cord. It is separated from the wall of the vertebral canal by the epidural space. This space contains loose areolar tissue and a network of internal vertebral venous plexuses.
CSF egressing through the foramen of Lushka travels into the subarachnoid space of the cisterns and subarachnoid space overlying the cerebral cortex. The CSF from the subarachnoid space is eventually reabsorbed through outpouchings into the superior sagittal sinus (SSS) known as the arachnoid granulations.
The ventral horn of the spinal cord is one of the grey longitudinal columns found within the spinal cord. It contains the cell bodies of the lower motor neurons which have axons leaving via the ventral spinal roots on their way to innervate muscle fibers.
Nervous tissue is composed of neurons, also called nerve cells, and neuroglial cells. Four types of neuroglia found in the CNS are astrocytes, microglial cells, ependymal cells, and oligodendrocytes.
The lateral sades make up the lateral funiculus, and the anterior white matter makes up the anterior funiculus and anterior median fissure; the anterior funiculi are interconnected by the white commissure.
The ventral horns contains the cell bodies of motor neurons that send axons via the ventral roots of the spinal nerves to terminate on striated muscles.
The spinal ganglia or dorsal root ganglia contain the cell bodies of sensory neurons entering the cord at that region. nerve – a group of fibers (axons) outside the CNS. The spinal nerves contain the fibers of the sensory and motor neurons.
The gray matter mainly contains the cell bodies of neurons and glia and is divided into four main columns: dorsal horn, intermediate column, lateral horn and ventral horn column.