CHAPTER 13: THE SPINAL CORD AND SPINAL NERVES
The anterior median fissure and posterior median fissure sulcus partially divide the spinal cord into right and _____ sides.
left
weird or longest?? . The ____ nerve from the lumbar plexus is the femoral nerve that innervate for the quadriceps muscles, and sartorius.
longest
obturator or nessecary? Most of the adductors hip muscles and gracilis are controlled by the ________ nerves in the lumbar plexus.
obturator
The middle layer of the spinal nerve is called ________.
perineurium
The _____________ space separates the dura mater from the arachnoid mater.
subdural
The VENTRAL RAMI of spinal nerves __5 to T1 form the BRACHIAL PLEXUS.
c
The outermost covering of the spinal cord is the ______ MATER.
dura
The VENTRAL RAMI of spinal nerves L1 - L__ form the LUMBAR PLEXUS.
4
The Epidural space contains connective tissue and ______vessels.
blood
1. The ulnar nerve, median nerve, and radial nerves are found in the _____plexus.
brachial
The________ PLEXUS is organized in TRUNKS (fusion of several roots) and CORDS
brachial
There is epidural space in the meninges of the spinal cord; no epidural space in the meninges of the _____.
brain
The spinal ______ continues to elongate and enlarge until 4 years old. But the spine (vertebral column) continues to grow, that is why the spinal cord is shorter in relation to the spine.
cord
The tapered inferior portion of the spinal cord is called _______ MEDULLARIS.
cornus
1. The ventral rami (anterior rami) of nerves T2-T12 do not form plexuses and are called_______ NERVES.
intercostal
Neuronal pool is an organized, functional group of _____.
interneurons
1. The sciatic nerve is the _____ nerve in the human body. It is found at the SACRAL PLEXUS. As the sciatic nerve approaches the knee, it divides into two branches: the tibial nerve and the fibular nerve.
longest
1. The femoral nerve is found at the _______ PLEXUS. Injuries to the femoral nerve results in an inability to extend the leg and loss of sensation in the skin over anteromedial aspect of the thigh.
lumbar
Enlargement of the spinal cord occurs in _______ segments of the spinal cord that controls the lower limbs.
lumbar
1. In carpal tunnel syndrome, the __________ nerve is affected. 2. Injury to the ulnar nerve may result in a condition called claw hand. 3. WRIST DROP is the inability to extend the wrist and fingers due to the injury of the ______ NERVE
median radial
Spinal nerves are called______nerves and formed by union of the dorsal (posterior) root and the ventral (anterior) root.
mixed
In monosynaptic or polysnaptic ???? 1. In a _________ reflex, a sensory neuron synapses directly on a motor neuron.
monosynaptic
The _____ nerve is found at the cervical plexus that services the diaphragm muscle. if affected breathing stops
phrenic
Blood vessels directly supplying the spinal cord are found in the ______ MATER. The _____ matter is tightly bound to the surface of the neural tissue.
pia
Denticulate ligaments are thickenings of ____ matter.
pia
The joining of the VENTRAL RAMI of adjacent spinal nerves is called nerve ______.
plexus
There are 4 major nerve plexuses including cervical, brachial, lumbar, and ______ plexus.
sacral
In SHINGLES, a virus infects dorsal root ganglia, causing a painful rash whose distribution corresponds to that of the affected _____ nerves.
sensory
The DORSAL ROOT GANGLIA contain cell bodies of _______neuron.
sensory
1. Somatic reflex involves _______ muscles 2. Visceral reflex involves smooth muscles
skeletal
1. Muscle _____ are sensory receptor in the stretch reflex 2. Muscle spindle consists of intrafusal fibers
spindles
The ___________ space of the spinal cord contains CSF (cerebral spinal fluid).
subarachnoid
The dorsal or ventral ?? The _____ ROOT of the spinal nerve contains axons of motor neurons.
ventral
The spinal cord is protected by
vertebral column, meninges, cerebrospinal fluid
The VENTRAL RAMI of spinal nerves L4-L___ and S1-S4 form the SACRAL PLEXUS.
5
1. In the spinal cord, _____ matter is organized into ascending and descending tracts, grouping into columns.
white
The _______matter of the spinal cord contains bundles of axons that share origins, destination, and functions. The ______ matter of the spinal cord is dominated by MYELINATED AXONS.
white
The entire spinal cord is divided into ____ segments.
31
1. The VENTRAL RAMI of spinal nerves C1 to C___form the CERVICAL PLEXUS.
5
Enlargement of the spinal cord occurs in ________ segments of the spinal cord that controls the upper limbs.
cervical
1. _______ is the specific region of the SKIN that is innervated by a specific spinal nerve.
dermatone
The Dorsal or ventral ? The ______ ROOT of the spinal nerve contains axons of sensory neurons. Therefore, if the dorsal root of a spinal nerve is severed, incoming sensory information would be disrupted.
dorsal
The _________ space is a space between the dura mater and the wall of the vertebral canal.
epidural
The outermost connective-tissue covering of spinal nerve is __________.
epineurium
A strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament is the _____ TERMINALE.
filum
GRAY COMMISSURES contain axons from one side of the spinal cord to the other within the _____ matter.
gray
The posterior _____ horn of the spinal cord contains nerve cell bodies of interneuron and unmyelinated axon of the sensory neuron.
gray
1. The ______of the spinal cord are the projections of GRAY matter toward outer surface of the spinal cord.
horns
