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Chapter 12,13,14 HW
Homework questions
| Question | Answer |
|---|---|
| A dorsal and ventral root of each spinal segment unite to form a | Spinal nerve |
| Cerebrospinal fluid flows within the | Subarachnoid space |
| In the spinal cord, white matter is separated into ascending and descending tracts organized as | Columns |
| Recognized neuronal circuit patterns include all of the following, except | Multipolar |
| Reflexes based on synapses formed during development are _____ reflexes. | Acquired |
| The ______ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament. | filum terminale |
| The _____ nerve, which arises in the cervical plexus, innervates the diaphragm | Phrenic |
| The anterior horns of the spinal cord contain mainly | Somatic motor nuclei |
| The dorsal root ganglia mainly contain | cell bodies of sensory neurons |
| The dorsal root of a spinal nerve contains | Axons of sensory neurons |
| The flexor reflex | moves a limb away from a painful stimulus. |
| The layer of connective tissue that surrounds a fascicle within a peripheral nerve is the | perineurium. |
| The layer of the meninges in direct contact with the spinal cord is the | Pia Mater |
| The outermost connective-tissue covering of nerves is the | epineurium. |
| The outward projections from the central gray matter of the spinal cord are called | Horns |
| The spinal cord is part of the | Central nervous system |
| The subdural space lies between | the dura mater and the arachnoid mater. |
| The tough, fibrous, outermost covering of the spinal cord is the | Dura mater |
| The ventral rami of spinal nerves C5 to T1 contribute fibers to the plexus. | Brachial |
| The ventral root of a spinal nerve contains | axons of motor neurons. |
| _____ open or close in response to binding specific molecules. | Chemically-gated channels |
| A stimulus that changes a postsynaptic neuron's membrane from resting potential to -85 mV is: | an inhibitory stimulus |
| A threshold stimulus is the | depolarization necessary to cause an action potential. |
| Axons terminate in a series of fine extensions known as | Telodendria |
| Clusters of RER and free ribosomes in neurons are called | Nissi bodies. |
| Damage to ependymal cells would most likely affect the | formation of myelin sheaths. |
| Deteriorating changes in the distal segment of an axon as a result of a break between it and the soma is called ____ degeneration | Wallerian |
| In which of the following would the rate of impulse conduction be the greatest? | a myelinated fiber of 10-um diameter |
| lon channels that are always open are called ___ channels | Leak |
| Neurons that are rare, small, and lack features that distinguish dendrites from axons are called | Anaxonic |
| Summation that results from the cumulative effect of multiple synapses at multiple places on the neuron is designated | spatial summation. |
| The ___ nervous system is composed of the brain and spinal cord | Central |
| The all-or-none principle states that | all stimuli great enough to bring the membrane to threshold will produce identical action potentials. |
| The equilibrium potential for potassium ion occurs at approximately | -90mV |
| The myelin sheath that covers many CNS axons is formed by | oligodendrocytes. |
| The neuroglial cells that participate in maintaining the blood-brain barrier are the | astrocytes. |
| The part of the peripheral nervous system that carries sensory information to the CNS is designated | afferent. |
| Which of the following is a type of glial cell found in the peripheral nervous system? | satellite cells |
| Which of the following is not a recognized structural classification for neurons? | pseudopolar |
| Which of the following is not involved in creating the resting potential of a neuron? | membrane permeability for sodium ions greater than potassium ions |
| An ___ is a printed record of the brain's electrical activity over a period of time | electroencephalogram |
| Cerebrospinal fluid enters the subarachnoid space through the | lateral and median apertures. |
| Damage to the superior colliculi would interfere with the reflex ability to | react to a bright light. |
| Divisions of the cerebral hemispheres that are named after the overlying skull bones are | Lobes |
| Gustatory information reaches the brain by way of: | cranial nerve IX |
| Overseeing the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium are functions of the | cerebellum. |
| The ____ filters and relays sensory information to cerebral cortex | Thalamus |
| The auditory cortex is located in the | Temporal lobe |
| The cerebellar hemispheres are separated by a band of cortex called the | vermis. |
| The control of heart rate and blood pressure is based in the | medulla oblongata. |
| The dural fold that projects into the longitudinal fissure between cerebral hemispheres is called the | falx cerebri. |
| The layer of the meninges that closely follows every gyrus and sulcus is the | Pia mater |
| The primary motor cortex is the surface of the | precentral gyrus. |
| The thin partition that separates the first and second ventricles is the | septum pellucidum |
| The two cerebral hemispheres are separated by the | longitudinal fissure. |
| The visual cortex is located in the | Occipital lobe |
| The white matter of the cerebellum forms the | arbor vitae. |
| What contains a spider web-like network of cells and fibers through which cerebrospinal fluid flows? | subarachnoid space |
| Which of the following help to protect the brain? | The CSF , the bones of the skull, cranial meninges, the blood brain barrier |
| Which of these is not one of the main divisions of the adult brain? | prosencephalon |
| Cranial nerve I | olfactory nerve |
| cranial nerve II | optic nerve |
| cranial nerve III | oculomotor nerve |
| cranial nerve IV | trochlear nerve |
| cranial nerve V | trigeminal nerve |
| cranial nerve VI | abducens nerve |
| cranial nerve VII | facial nerve |
| cranial nerve VIII | vestibulocochlear nerve |
| cranial nerve IX | Glossopharyngeal nerve |
| cranial nerve X | vagus nerve |
| cranial nerve XI | accessory nerve |
| cranial nerve XII | hypoglossal nerve |
| I | one 1 |
| II | two 2 |
| III | three 3 |
| IV | four 4 |
| V | five 5 |
| VI | six 6 |
| VII | seven 7 |
| VIII | eight 8 |
| IX | nine 9 |
| X | ten 10 |
| XI | eleven 11 |
| XII | twelve 12 |
Created by:
knsudderth