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NBCE Part 1
LaRose Spinal Cord 1
54
Health Care
Professional
08/23/2012
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Term
1.       The spinal cord is derived from the _____.
 Definition
NEURAL TUBE
Term
2.       Neural tube formation (neurulation) is affected by _____ in the 1st trimester.
 Definition
FOLIC ACID
Term
3.       The neural tube is derived from the _____.
 Definition
ECTODERM
Term
4.       The neural tube starts distal to the _____ pair of somites in the _____ week of gestation.
 Definition
4th; 3rd
Term
5.       In the 3rd week of gestation, the lateral walls of the tube _____.
 Definition
THICKEN
Term
6.       in development of the spinal cord, the walls of the neural tube differentiate into _____ and _____ plates.
 Definition
DORSAL AND VENTRAL
Term
7.       The dorsal plates differentiate into the _____.
 Definition
SENSORY NEURONS
Term
8.       The ventral plates differentiate into the _____.
 Definition
MOTOR NEURONS
Term
9.       The neural canal becomes the _____ of the spinal cord.
 Definition
CENTRAL CANAL
Term
10.   The neural tube closes at the end of the _____.
 Definition
4TH WEEK OF GESTATION
Term
11.   Tissue at the sides of the neural tube become the _____.
 Definition
NEURAL CREST CELLS
Term
12.   The neural crest cells develop into these 8 spinal cord structures.
 Definition
1) DORSAL ROOT GANGLIA, 2) ADRENAL MEDULLA, 3) MELANOCYTES, 4) MICROGLIA, 5) MENINGES, 6) ENTERIC NEURONS, 7) SCHWANN CELLS, 8) SYMPATHETIC GANGLIA
Term
13.   The spinal cord is an _____ inch long structure that begins at the _____ and ends at _____ in an adult.
 Definition
18; FORAMEN MAGNUM; L1/L2
Term
14.   The spinal cord has 2 regional enlargements which are in the _____ and _____ regions for the brachial and lumbosacral plexuses respectively.
 Definition
CERVICAL AND LUMBOSACRAL
Term
15.   The largest spinal cord enlargement is at _____.
 Definition
C6
Term
16.   The dilated end of the spinal cord is called the _____.
 Definition
CONUS MEDULLARIS (MEDULLARY CONE)
Term
17.   The nerves that leave the end of the spinal cord are known as the _____.
 Definition
CAUDA EQUINA
Term
18.   The spinal cord is covered by three layers of meninges. The outermost layer is called the _____, the middle is the _____, and the inner is the _____.
 Definition
DURA MATER, ARACHNOID MATER, PIA MATER
Term
19.   The _____ space lies between the arachnoid and pia mater and is filled with CSF.
 Definition
SUBARACHNOID SPACE
Term
20.   The pia mater contains _____ and 2 _____ which anchor the spinal cord to the spinal dura.
 Definition
FILUM TERMINALE AND DENTATE LIGAMENTS
Term
21.   Each dentate ligament has _____ teeth.
 Definition
21
Term
22.   The dural sac ends at _____.
 Definition
S2
Term
23.   The filum terminale is _____cm long and is divided into these 2 parts.
 Definition
20; FILUM TERMINALE INTERNA, FILUM TERMINALE EXTERNA
Term
24.   The _____ is 15cm long, and extends from the conus medulla to the end of the dural sac at S2.
 Definition
FILUM TERMINALE INTERNA
Term
25.   The _____ is 5cm long, and fuses with the dura mater and extends to the coccyx.
 Definition
FILUM TERMINALE EXTERNA
Term
26.   The spinal cord lies within the _____.
 Definition
SPINAL CANAL
Term
27.   The spinal cord is subdivided longitudinally into _____ segments.
 Definition
31
Term
28.   Each segment of the spinal cord has a pair of ventral and dorsal roots that come together to form the _____.
 Definition
SPINAL NERVES
Term
29.   The _____ and _____ extend along the spinal nerves as they pass through the IVF.
 Definition
DURA MATER AND ARACHNOID MATER
Term
30.   The spinal cord has both _____ (myelinated) and _____ (unmyelinated) mater.
 Definition
WHITE; GRAY
Term
31.   The white mater of the spinal cord is organized into these 3 bundles or funiculi.
 Definition
1) POSTERIOR, 2) ANTERIOR, 3) LATERAL
Term
32.   Fast-conducting myelinated axons form _____ which ascend and descend for varying distances.
 Definition
FASCICULI
Term
33.   _____ lie in between the fast-conducting myelinated axons.
 Definition
GLIAL CELLS
Term
34.   2 types of glial cells that lie between the myeliated axons.
 Definition
OLIGODENDROCYTES; ASTROCYTES
Term
35.   Axon fibers with a common function are called _____.
 Definition
TRACTS
Term
36.   The posterior or dorsal columns carry these 3 senses, and are separated into well-defined medially located gracilis and laterally located cuneatus tracts.
 Definition
1) VIBRATION, 2) FINE TOUCH, 3) JOINT POSITION SENSE
Term
37.   The nucleus gracilis tract carries information from the _____.
 Definition
LOWER LIMBS
Term
38.   The nucleus cuneatus tract carries information from the _____.
 Definition
UPPER LIMBS
Term
39.   Fibers from the lower limb synapse in the _____ in the _____.
 Definition
NUCLEUS GRACILIS; MEDULLA
Term
40.   Fibers from the upper limb synapse in the _____ in the _____.
 Definition
NUCLEUS CUNEATUS; MEDULLA
Term
41.   The _____ tract is responsible for carrying unconscious proprioception.
 Definition
SPINOCEREBELLAR
Term
42.   Pain, temp, crude touch, and pressure travel along the _____ tract.
 Definition
SPINOTHALAMIC
Term
43.   The descending spinal tracts carry axons that control _____, _____, and _____.
 Definition
SKELETAL MOTOR FUNCTION, SMOOTH MUSCLES AND SECRETORY GLANDS
Term
44.   All descending tracts are motor, except for the _____ which modulates nociception.
 Definition
RAPHESPINAL TRACT
Term
45.   The 1st order neurons of the dorsal column are responsible for sensing these 3 things.
 Definition
1) MECHANORECEPTION, 2) VIBRATION, 3) FINE TOUCH
Term
46.   The 2nd order neurons of the dorsal column are in the _____ and _____.
 Definition
NUCLEUS GRACILLIS AND NUCLEUS CUNEATUS
Term
47.   The decussation of the dorsal column is in the _____.
 Definition
MEDULLA
Term
48.   The 3rd order neurons of the dorsal column travel to the _____.
 Definition
VPL NUCLEUS OF THE THALAMUS
Term
49.   The 1st order neurons of the spinothalamic tract are responsible for sensing these 3 things.
 Definition
1) NOCIOCEPTION, 2) THERMORECEPTION, 3) LIGHT TOUCH RECEPTION
Term
50.   The 2nd order neurons of the spinothalamic tract is in _____ and _____ in the dorsal horn of the gray matter.
 Definition
LAMINA I AND II
Term
51.   The decussation of the spinothalamic tract is in the _____.
 Definition
SPINAL CORD
Term
52.   The 3rd order neuron of the spinothalamic tract goes to the _____.
 Definition
VPL NUCLEUS OF THE THALAMUS
Term
53.   The dorsal spinocerebellar 1st order neurons carry _____.
 Definition
UNCONSCIOUS PROPRIOCEPTION FROM THE LOWER LIMB
Term
54.   The 2nd order neuron of the dorsal spinocerebellar tract are in _____, which is found in the thoracic region.
 Definition
CLARKE’S NUCLEUS
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