59. Ascending tract of spinalcord- gracile fasciculus
60. Somatosensory refers to all expect-viscera
61. Neurosomas of posterior root and Neurosomas of anterior-posterior root ganglion and graymatter
62. Order of somatic reflex- somatic receptor then afferent then interneuron...
FUNCTIONALANATOMY OF THE BRAIN
I. HIND BRAIN
A. Brain stem: A bundle of nervous tissue that connects the cerebrum to the spinalcord. It consists of numerous tracts if nerve fibers and several nuclei. The parts of the brain stem include the midbrain, pons, and medulla oblongata.
blood pressure, which makes it difficult to maintain a comfortable body temperature. The spinalcord is made up of soft, jellylike bundles of long axons, wrapped in insulating myelin (whitematter) and surrounded and protected by the vertebral bones. There are two major neural pathways in the spinal...
the information to the spinalcord.
4 In response to signals from the sensory neurons, motor neurons convey signals to the quadriceps, causing it to contract and jerking the lower leg forward. Graymatter
Quadriceps muscle 1 The reflex is initiated artificially by tapping the tendon connected to...
LABORATORY EXERCISE 26 SPINALCORD AND MENINGES
Figure Labels FIG. 26.1 1. Subarachnoid space 2. Whitematter 3. Dorsal root of spinalnerve 4. Ventral root of spinalnerve FIG. 26.2 1. Posterior horn...
, lies deep to cortex. The impulses carried by theses tracts allow different regions of cortex to communicate with one another. They also link cortex to other parts of the brain and spinalcord. The hippocampus plays a role in memory processing. This functions in verbal or language memory and short-term...
29) Preganglionic fibers of parasympathetic neurons are present in all of the following cranial nerves, except
30) Each of the following effects is associated with the action of postganglionic sympathetic fibers, except
It is white because the myelinated nerve fibers are white in color
Mostly found in cerebrum, but makes tracts to other areas
In the spinalcord, it surrounds the inner core of graymatter
It facilitates communication between grey matter areas of the brain and spinalcord
10. GRAYMATTER VS WHITEMATTER Which one is myelinated and be able to label it on a spinalcord diagram
11. TYPES OF NEURONS (3) LOCATION OF INTERNEURONS Where are the cell bodies found and where do the axons travel to...
body to the brain. Descending nervetracts send information pertaining to motor function from the brain to the rest of the body.
Spinalcord has two major types of tissue.
Graymatter contains the nerve cell bodies and all of the many thousands of connections between nerves.
6. Production must equal reabsorption ! About 125 ml total at any time, maintain constant pressure. Read about hydrocephalus.
II. The Brain Stem. = medulla, pons, midbrain.
A. Medulla: a continuation of the spinalcord to the pons
1. Whitematter: both sensory and motor tracts are...
) that continues inferiorly to thesacrum and coccyx. The whitematter of the spinalcord functions as the main conduit of nerve signals to the body from the brain. The grey matter of the spinalcord integrates reflexes to stimuli.
NervesNerves are bundles of axons in the peripheral nervous system (PNS...
is not a characteristic of nerve tissue?
A. | It is found in the brain, spinalcord and nerves. |
B. | It contains cells that respond by transmitting impulses. |
C. | Its intercellular spaces are filled with collagen. |
D. | Its functional cells are sensitive to changes in their...
makes up a nerve. Some axons are covered with a myelin sheath, made up of glial cells. The myelin sheath increases neuron efficiency and provides insulation.
A typical myelinated neuron .
NEURONS: THE MESSENGERS
Neurons that carry messages from the sense organs to the brain or spinalcord...
functions. It is a loosely organized web of graymatter that runs vertically through all levels of the brainstem and has connections with many areas of the cerebrum. I occupies much of the space between the white fiber tracts and the more anatomically distinct brainstem nuclei. Functions include...
c. white, and composing the whitematter of the brain and spinalcord; gray, and composing the graymatter of the brain and spinalcord
d. none of the above
19. The process of transmitting a nerve impulse from one neuron to another involves a
a. nerve impulse...
its color from the myelin. Whitematter includes all of the nerves, and much of the interior of the brain and spinalcord. Grey matter is found in clusters of neurons in the brain and spinalcord, and in cortical layers that line their surfaces. There is an anatomical convention that a cluster of...
of the spinalcord are grouped into bundles of nerve fibers that travel in two pathways. Ascending nervetracts carry sensory information from the body to the brain. Descending nervetracts send information pertaining to motor function from the brain to the rest of the body.Brain The brain is the...
bodies of neurons. Whitematter is composed mainly of myelinated axons, and takes its color from the myelin. Whitematter includes all of the nerves, and much of the interior of the brain and spinalcord. Grey matter is found in clusters of neurons in the brain and spinalcord, and in cortical layers...