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Chpt 16
| Question | Answer |
|---|---|
| Because they contain both sensory and motor axons spinal nerves are considered to be | Mixed nerves |
| The five components of a relaxed Arc in order from beginning to end are | 1sensory receptor 2sensory neuron 3integrating center 4motor neuron 5effector |
| True or false. Gray matter of the spinal cord contains somatic motor and sensory nuclei and automatic motor and sensory nuclei and functions to receive an integrate with incoming and outgoing information | True |
| True or false The epidural space is located between the wall of vertebral canal and the pia mater | False |
| Which of the following is not true | Metronomes are areas of the body that are stimulated by motor neurons exiting specific spinal nerves The abdominal reflex is used to diagnose problems with autonomic reflexes |
| What are the steps for which body receives pain | Sensory receptor activated by stimulus Sensory neuron relays impulse the spinal cord Impulse travels through posterior dorsal root of spinal nerve integrating centers interprets sensory impulses and then generate motor impulses Impulses travel through ant |
| The connective tissue surrounding each individual axon is | Endoneurium |
| Which of the following is a motor tract | Corticospinal |
| Going the posterior root of a spinal nerve wood | Interfere with the flow of sensory impulses |
| True or false The two main spinal cord sensory Pat's are the spinothalamic and anterior columns | False |
| True or false The anterior ventral gray horns contain cell bodies of neurons that cause skeletal muscle contraction | True |
| True or false The gray commissure connects the white matter of the right and left sides of the spinal cord | False |
| True or false Cell bodies of the autonomic motor neurons are located in the lateral gray horns | True |
| True or false Sensory or ascending tracts conduct motor impulses down the spinal | False |
| True or false Great matter in the spinal cord consists of cell body of bodies of neurons neuralgia unmyelinated axons and dendrites in the of interneurons and motor neurons | True |
| A reflex resulting in the contraction of a skeletal muscle when it is stretched | Stretch reflex |
| Receptor that monitors changes in muscle length | Muscle spindle |
| Balance maintained reflex | Crossed extensor reflex |
| Operates is a feedback mechanism to control muscle tension by causing muscle relaxation when muscle Force becomes 2Xtreme | Tendon reflex |
| Reflex arc that consists of one sensory and motor neuron | Monosynaptic reflex |
| Actors of feedback mechanisms control muscle length by causing muscle contraction | Stretch reflex |
| Sensory impulses enter on one side of the spinal cord and motor impulses exit on the opposite side | Ipsilateral reflex arc |
| occurs when sensory nerve impulses travel up and down the spinal cord there by activating several motor neurons in more than one effector | Intersegmental reflex arc |
| Polysynaptic reflex initiated in response to a painful stimulus | Flexor withdrawal reflex |
| Receptor that monitors changes in muscle tension | Tendon or Golgi tendon organ |
| Maintains proper muscle tone | Stretch reflex |
| Reflex pathway that contain sensory neurons and interneurons and motor neurons | Polysynaptic reflex |
| motor nerve impulses exit the spinal cord and on the same side as the sensory impulses enter the spinal cord | Ipsilateral reflex arc |
| Protects the tendon and muscle from damage due to excessive tension | Tendon reflex |
| neural circuit that coordinates body movements by causing contraction of one muscle and relaxation of an antagonistic muscles or relaxation of a muscle and a contraction of an antagonist | Reciprocal innervation |
| Revise the entire nerve supply of the shoulders and upper limbs | Brachial plexus |
| Provide the nurse supply of the skin and muscles of the head next Superior part of the shoulders and chest | Cervical plexus |
| Provides the nerve supply of the anterolateral abdominal wall external genitals and part of the lower limbs | Lumbar plexus |
| Supplies the buttocks perineum and lower limbs | Sacral plexus |
| Formed by the anterior Rami of C1 through c4 with some contribution by c5 | Cervical plexus |
| Born by the anterior Rami of S4 through S5 and the coccygeal nerves | Coccygeal plexus |
| Formed by the anterior Rami of L1 through L4 | Lumbar plexus |
| Formed by the anterior Rami of C5-C8 & T1 | Brachial plexus |
| Formed by the anterior Rami of L4-L5 & S1-S4 | Sacral plexus |
| Phrenic nerve arises from this plexus | Cervical plexus |
| Median nerve arises from this plexus | Brachial plexus |
| Sciatic nerve arises from this plexus | Sacral plexus |
| Femoral nerve arises from this plexus | Lumbar plexus |
| Supplies a small area of skin the coccygeal region | Coccygeal plexus |
| Injury to this plexus can affect breathing | Cervical plexus |
| The joining together of an anterior Rami of adjacent nerves | Plexus |
| Spinal nerve branches that serve the deep muscles and skin of the posterior surface of the trunk | Posterior ramus |
| spinal nerve branches that serve mussels and structures of the upper and lower limbs of the lateral and ventral trunk | Anterior ramus |
| Area of the spinal cord from which nerves to and from the upper limbs arise | Cervical enlargement |
| Area of the spinal cord from which nerves to and from the lower limbs arise | Lumbar enlargement |
| the roots from the nerves that arise from the inferior part of the spinal cord or do not leave the vertebral column at the same level as they exit the cord | Cauda equina |
| Contains motor neurons axons and conducts impulses from the spinal cord to peripheral organs and cells | Anterior ventral root |
| Avascular covering of spinal cord is composed of delicate collagen fibers and some elastic fibers | Arachnoid mater |
| Contain sensory neuron axons that conducts impulses from the peripheral receptors to the spinal cord | Posterior dorsal root |
| Superficial spinal cord cover in the dense irregular connective tissue | Dura mater |
| Extension of the pia mater that anchors the spinal cord to the coccyx | Filum terminale |
| Extending the length of the spinal cord these pia mater thickenings fuse with the arachnoid mater and a dura mater and help protect the spinal cord from the shock and sudden displacement | Denticulate ligaments |
| thin transparent connective tissue composed of interlacing bundles of collagen fibers and some elastic fibers adhering to the spinal cord surface | Pia mater |
| Space within the spinal cord filled with cerebrospinal fluid | Central canal |
| Spinal nerves branch that supplies vertebrae partiro ligaments blood vessels of the spinal cord and meninges | Meningeal branch |
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