The Spinal Cord, Spinal Nerves and Spinal Reflexes
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| The spinal cord is part the _______ nervous system. | show 🗑
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| show | filum terminale
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| The spinal cord consists of four regions and _______ segments | show 🗑
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| The dorsal root of a spinal nerve contains | show 🗑
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| show | axons of motor neurons
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| The tough, fibrous, outermost covering of the spinal cord is the | show 🗑
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| show | 4
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| If the dorsal root of a spinal nerve is severed, what will happen? | show 🗑
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| show | pia meter
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| show | spinal nerve
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| Describe meningitis | show 🗑
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| show | commonly used as a method of pain control during labor and delivery, affects only the spinal nerves in the immediate area of the injection, provides sensory and motor anesthesia depending on the anesthetic selection and provide mainly sensory anesthesia
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| show | 4
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| show | subarachnoid space
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| show | loss of sensation in his torso
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| The posterior horns of the spinal cord contain mainly | show 🗑
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| The anterior horns of the spinal cord contain mainly | show 🗑
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| Use Figure 13-1 The Spinal Cord Identify the structure labeled "1" | show 🗑
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| show | posterior gray horn
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| Use Figure 13-1 The Spinal Cord Identify the structure labeled "10" | show 🗑
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| show | somatic sensory - monitor skin
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| show | visceral motor - innervates organs, glands and smooth muscle
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| Where do somatic motor neurons reside? | show 🗑
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| The outermost connective tissue covering of nerves is the | show 🗑
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| Muscles of the neck and shoulder are innervated by spinal nerves from the ____ region | show 🗑
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| show | brachial
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| In the condition _____, a virus infects dorsal root ganglia, causing a painful rash whose distribution corresponds to that of the affected sensory nerves as seen in their dermatomes | show 🗑
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| show | leg
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| The ____ innervates the ventrolateral body surface, structures in the body wall, and the limbs | show 🗑
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| show | skeletal muscle weakness or paralysis
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| The complex, interwoven network formed by contributions from the central rami of neighboring spinal nerves is termed a(n) | show 🗑
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| show | nuchal
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| If a person has a crush injury to the C3-C5 spinal segments, you would expect that he might be unable to | show 🗑
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| show | sciatic
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| Mary is in an automobile accident and suffers a spinal cord injury. She has lost feeling in her lower body. Her doctor tells her that swelling is compressing a portion of her spinal cord. Which part of her cord is likely to be compressed? | show 🗑
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| show | radial, median, ulnar and musculocutaneous - NOT phrenic
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| Use Figure 13-2 Spinal Nerves Identify the structure labeled "2" | show 🗑
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| Use Figure 13-2 Spinal Nerves Identify the structure labeled "4" | show 🗑
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| show | rami communicantes
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| show | sympathetic ganglion
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| show | spinal nerve
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| show | innervates organs, glands and smooth muscle
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| show | #1, dorsal ramus
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| show | #10, dorsal root ganglion
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| You're sitting at a restaurant waiting for your food. The waiter brings a hot plate, telling you to be careful touching it. You touch it anyway, producing a pain sensation in fingers, a withdrawal of your hand, & an auditory comment of what your thinking | show 🗑
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| show | automatic motor response are the simplest form of behavior, help preserve homeostasis and involve at least two neurons
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| show | innate
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| How are reflexes classified? | show 🗑
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| show | found within skeletal muscle, consists of specialized fibers called intrafusal fibers, are receptors for the stretch reflex and are innervated by gamma motor neurons
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| The reflex that prevents a muscle from exerting too much tension is the ____ reflex | show 🗑
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| show | crossed extendor
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| show | moves a limb away from a painful stimulus
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| In which of the following would the delay between stimulus and response be GREATER? (A) a monosynaptic reflex (B) a polysynaptic reflex | show 🗑
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| Describe the characteristics of reflexes | show 🗑
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| show | suffered no damage to her spinal cord
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| show | normal in newborns, abnormal in adults, a sign of injury to descending spinal tracts and flaring of the toes when the sole is stroked
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| The condition in which a person loses all feeling and movement of the arms and legs due to spinal cord injury is termed | show 🗑
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| show | paraplegia
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| The ____ separates the dura mater from the walls of the vertebral canal | show 🗑
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| The dorsal root contains ____ neurons | show 🗑
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| Blood vessels traveling within the ____ space deliver oxygen and nutrients to the spinal cord | show 🗑
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| During the procedure known as a(n) ____, a needle is inserted into the subarachnoid space in the inferior lumbar region | show 🗑
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| show | ventral
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| show | dermatome
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| A complex, interwoven network of nerves is called a | show 🗑
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| show | phrenic
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| show | divergence
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| show | neuronal pools
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| The neural "wiring" of a single reflex is called a(n) | show 🗑
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| show | Somatic
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| show | intersegmental reflex arcs
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| A(n) ____ reflex has at least one interneuron placed between the sensory and motor neurons | show 🗑
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