What is the difference between gray matter and white matter quizlet?

What is the difference between gray matter and white matter. Gray matter does not contain mylein sheath over the axon. White matter has a myelin sheath covering. Nodes of Ranvier are small gaps between the myelin sheath.

Beside this, what is difference between gray matter and white matter?

Grey matter is distinguished from white matter in that it contains numerous cell bodies and relatively few myelinated axons, while white matter contains relatively few cell bodies and is composed chiefly of long-range myelinated axons. The colour difference arises mainly from the whiteness of myelin.

Beside above, what is white matter quizlet? Gray Matter. Composed of motor neurons and interneuron cell bodies, dendrites, and unmyelinated axons. Spinal Cord. white matter is at the surface and the gray matter is inside. Brain.

Similarly one may ask, what is gray matter quizlet?

Gray Matter. Consists of neuron cell bodies, unmyelinated axons, dendrites and neuroglia.

What is the function of the white matter of the brain?

White matter. White matter is composed of bundles, which connect various gray matter areas (the locations of nerve cell bodies) of the brain to each other, and carry nerve impulses between neurons.

30 Related Question Answers Found

Where is white matter located?

brain

What is the function of GREY and white matter?

Namely, the gray matter contains glial cells, axon tracts, neuropil (glia, dendrites, and unmyelinated axons), as well as capillary blood vessels (1). The white matter contains the glial cells responsible for the production of myelin (the oligodendrocytes) and the astrocytes (1).

What does loss of gray white matter mean?

A system to assess and quantify the cerebral edema by studying the grey-to-white matter ratio (GWR) in the CT has been proposed (15). In these studies, the loss of the differentiation between grey matter and white matter on the brain CT was a marker of cerebral oedema in patients after cardiac arrest (18-21).

What is gray matter and white matter of the brain?

The CNS has two kinds of tissue: grey matter and white matter, Grey matter, which has a pinkish-grey color in the living brain, contains the cell bodies, dendrites and axon terminals of neurons, so it is where all synapses are. White matter is made of axons connecting different parts of grey matter to each other.

What is more important GREY matter or white matter?

Since grey matter and white matter are simply parts of a neuron, both are needed in order to have complete brain function. They are dependent upon each other and wouldn't work without one another. Chemical signals are taken in from the dendrites (grey matter) and passed to the cell body.

What is white matter made of?

White matter is the whitish nerve tissue of the central nervous system that is mainly composed of myelinated nerve fibers (or axons). The central nervous system is the brain and spinal cord. And gray matter is grayish nerve tissue of the central nervous system mainly composed of nerve cell bodies and dendrites.

Is white matter disease dementia?

White matter disease is a disease that affects the nerves that link various parts of the brain to each other and to the spinal cord. These nerves are also called white matter. White matter disease is believed to be a factor in both strokes and dementia. However, more research must be done for further confirmation.

Where is gray matter located?

White matter is found buried in the inner layer of the brain's cortex, while the grey matter is mainly located on the surface of the brain. The spinal cord is arranged in the opposite way, with grey matter found deep inside its core and the insulating white matter wrapped around the outside.

What is the function of white matter quizlet?

What is the function of White Matter? What is the function of Gray Matter? It collects and processes incoming (afferent) sensory or outgoing (efferent) information. What are the fibers of white matter located outside of the brain called?

What is the purpose of white matter in the brain quizlet?

The type of nerve fibers in the cerebral white matter that are used for the communication between different parts of the cerebral cortex, the brain, and the spinal cord. Tracts in the cerebral white matter that horizontally connect the right and left sides of the cerebral hemisphere to allow communication between them.

What are the meninges?

The meninges refer to the membranous coverings of the brain and spinal cord. There are three layers of meninges, known as the dura mater, arachnoid mater and pia mater.

What part of a neuron receives signals and sends a message to the cell body?

A neuron has three main parts. The cell body directs all activities of the neuron. Dendrites extend out from the cell body and receive messages from other nerve cells. An axon is a long single fiber that transmits messages from the cell body to the dendrites of other neurons or to other body tissues, such as muscles.

What statement describes the integrative function of the nervous system?

What statement describes the integrative function of the nervous system? The central nervous system (CNS) evaluates sensory input and determines if a response is needed.

Where is CSF produced quizlet?

Produces CSF. Produced in the Choriod plexus within Lateral ventricles. Then through the Interventricular foramina to the third ventricle, then the cerebral aqueduct to the fourth ventricle. From the fourth ventricle to three openings to enter the subarachnoid space (median and lateral apertures).

What are the regions of the spinal cord?

Regions of the Spine

Typically, the spine is divided into four main regions: cervical, thoracic, lumbar and sacral.

What do the corpus callosum and anterior commissure have in common?

What do the corpus callosum and the anterior commissure have in common? They are bundles of axons that connect the two hemispheres of the cerebral cortex.

What type of acetylcholine receptor is present in the postganglionic neurons and on the target tissue in autonomic pathways?

Acetylcholine binds to 2 types of cholinergic receptors. Nicotinic receptors are found on the cell bodies of all postganglionic neurons, both sympathetic and parasympathetic, in the ganglia of the ANS.