Term
The proximal branches, aka points of attachment to the spinal cord are the: a. b. c. |
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Definition
a. dorsal root b. ventral root c.cauda equina |
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Term
Merging of the dorsal and ventral roots forms the after it exits the intervertebral foramen.
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The distal brances, the 3 diisions after immerging from the intervertebral foramen are the: a. b. c. |
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Definition
a. dorsal ramus b. ventral ramus c. meningeal branch |
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Term
The ramus innervates the muscles and joints in that region of the spine and the skin of the back while the ramus innervates the ventral and lateral skin and muscles of the trunck and gives rise to nerves of the limbs. The meningeal branch reenters the vertebral canal and innervates the , ,and .
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Definition
dorsal ventral meninges, vertebrae, and spinal ligaments |
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Term
The ventral ramus in the thoracic region forms the nerve while all other ventral rami form the nerve .
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Definition
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Term
Eruptions along path of nerve, caused by the Varicella-zostar virus. Remains for life in dorsal root ganglia.
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Term
Ventral rami branch and merge repeatedly to form nerve plexuses. The cervical plexus supplies the and phrenic nerve to the . The brachial supplies the and some of the and .
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Definition
5 neck diaphragm upper limb shoulder neck |
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Term
The lumbar plexus supplies the , anterior , and . The sacral plexus supplies the remainder of the trunk and limb. The coccygeal plexus supplies the lower organs missed by the mubor and scaral plexuses. |
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Definition
abdominal wall thigh genitalia lower lower |
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Term
Each spinal nerve receives sensory input from a specific area of skin called a which can overlap at edges by %. A total loss of sensation requires anesthesia of successive spinal nerves.
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Definition
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Term
Quick, involuntary, stereotyped reactions of or to sensory stimulation. Automatic responses to sensory input that occur without our intent or often evn our awareness. Somatic= .
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Definition
Reflexes glands muscles skeletal muscle |
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Term
Somatic Reflex Arc 1. of somatic receptors 2. fibers carry signal to of spinal cord. 3. One or more integrate the information in the integration center located in the of the spinal cord or brainstem and decides what to do. 4. fibers carry impulses to skeletal muscles 5.skeletal muscles= respond.
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Definition
1. Stimulation 2. afferent, dorsal horn 3. Interneurons, grey matter 4. efferent 5. somatic effectors |
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Term
Many somatic reflexes involve stretch receptors called muscle which are embedded in the skeletal muscles. These are among the body's which are sense organs specialized to monitor the length of muscle and how fast muscles change in length. It helps in coordination of complex movements. It spurpose is to inform the brain of muschle length and body movements. |
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Definition
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Term
Muscle spindles are composed of muscle fibers, modified muschles that only contract ont he ends, fibers, and gamma motorneruons scattered in fleshy part of muscle and aligned with the fibers. They have a fusiform shape. They blend into the endomysium of the muscle.
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Definition
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Term
When a muscle is stretched, it fights back, contracting to maintain increased . (stretch reflex) THe strech reflex helps to maintain and .As the head starts to tip forward as you fall asleep, muscles contract to raise the head. The stretch reflex also stabilizes by balancing tension in extensors and flexors smoothing muschle actions. |
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Definition
tonus equilibrium posture joints |
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Term
A very sudden muscle stretch causes reflex.An example is the . prevents muscles from working against each other. If I tense up all the muscles in my arm, I can withdraw my hand from a hot stove.
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Definition
tendon knee-jerk Reciprocal inhibition |
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Term
Flexor Withdrawal Reflexes are more and last longer than the strech reflex. It occurs during withdrawal of from pain. Because it is so fast it is . is a neural circutry in spinal cord that controls the sequence and duration of muscle contractions. There are several different pathways of several different lengths . If you step on something sharp the other leg is going to make sure you don't fall over when you lift your foot. Crosses over, more than one synapse.
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Definition
complex foot ipsilateral Polysnaptic reflex arc |
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Term
The is the contraction of extensor muscles in the limb offposite from the one widrawn after you step on something sharp. It extends that limb and enables you to keep your balance. The extends up and down the spinal cord, different segments working different regions of the body. arcs explained by pain at one foot causes muscle contraction in other leg.
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Definition
Crossed extension reflex Intersegmental reflex Contralateral reflex |
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