HUMAN ANATOMY PKG >CUSTOM<
8th Edition
ISBN: 9781323572528
Author: Marieb
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 12, Problem 5CRCAQ
Reflexes can be somatic (as in the knee-jerk response) or visceral (as in vomiting).
Given that both result in an involuntary motor response, why aren’t they both
considered visceral motor?
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Chapter 12 Solutions
HUMAN ANATOMY PKG >CUSTOM<
Ch. 12 - In which direction are afferent signals carried?...Ch. 12 - What subdivision of the nervous system regulates...Ch. 12 - What type of sensation is (a) pain from a pulled...Ch. 12 - Which type of neuron process receives stimuli?Ch. 12 - Describe how the electrical impulse from one...Ch. 12 - What is the structural type of most sensory...Ch. 12 - Which structural type of neuron is most abundant?...Ch. 12 - Which neuroglia make myelin in the CNS? In the...Ch. 12 - Which neuroglia are common in regions where...Ch. 12 - Do Schwann cells cover nonmyelinated axons in the...
Ch. 12 - Name the connective tissue wrapping that encloses...Ch. 12 - Where do synaspes occur in the CNS, in white...Ch. 12 - Why is white matter white?Ch. 12 - If there is no interneuron in a reflex arc, as in...Ch. 12 - If you touch a hot stove, you reflexively...Ch. 12 - What type of neuronal circuit contains multiple...Ch. 12 - Both peripheral nerves and the white matter of the...Ch. 12 - From your understanding of the functions of myelin...Ch. 12 - What type of neurons form from neuroblasts in the...Ch. 12 - How does the development of sensory neurons...Ch. 12 - Which of the following structures is not part of...Ch. 12 - Match the names of the cells in column B with the...Ch. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - An example of an effector is (a) the eye, (b) a...Ch. 12 - Prob. 6RQCh. 12 - A ganglion is a collection of (a) neuron cell...Ch. 12 - A synapse between a terminal bouton and a neuron...Ch. 12 - Myelin is most like which of the following cell...Ch. 12 - Prob. 10RQCh. 12 - Afferent neurons of the PNS synapse in the CNS...Ch. 12 - Prob. 12RQCh. 12 - Prob. 13RQCh. 12 - Place the connective tissue coverings surrounding...Ch. 12 - Define proprioception.Ch. 12 - Prob. 16RQCh. 12 - Prob. 17RQCh. 12 - Distinguish gray matter from white matter of the...Ch. 12 - What is distinctive about the appearance of a cell...Ch. 12 - Describe the differences between neurons and...Ch. 12 - Distinguish a nerve from a nerve fiber and a...Ch. 12 - Prob. 22RQCh. 12 - Draw a reflex arc in place in the nervous system...Ch. 12 - Prob. 24RQCh. 12 - Why are the cell bodies of sensory neurons located...Ch. 12 - Prob. 26RQCh. 12 - Two anatomists were arguing about a sensory...Ch. 12 - An MRI scan and other diagnostic tests indicated...Ch. 12 - Prob. 3CRCAQCh. 12 - Rochelle developed multiple sclerosis when she was...Ch. 12 - Reflexes can be somatic (as in the knee-jerk...Ch. 12 - Prob. 6CRCAQ
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- A patient with a cerebral lesion exhibits loss of fine motor control ofthe left hand, arm, forearm, and shoulder. All other motor and sensoryfunctions appear to be intact. Describe the location of the lesion asprecisely as possiblearrow_forwardWhat structural features of the primary motor cortex somatotopic map reflect the general principle of physiology that structure is a determinantand has coevolved function?arrow_forwardWhat would lower motor neuron damage be expected to cause? OBrisk reflexes O Numbness O Autonomic dysfunction O Muscle weaknessarrow_forward
- Upper motoneurons which are often affected in MND are originate from the Primary motor cortex only Somatosensory motor cortex only Primary motor and pre motor cortices Pre motor cortex only Primary motor, pre motor and primary sensory corticesarrow_forwardSometimes, when it is difficult to initiate a knee-jerk reflexby tapping the patellar tendon,a patient will be asked to voluntarily make afist. The reflexwill be easily evoked.what does this illustrate about the relation between voluntary and involuntary reflex movement?arrow_forward86. All of the following statementsconcerning the corticospinal tract arecorrect EXCEPT:A. Most of the upper motor neuronshave their cell bodies in the precentralgyrusB. Pyramidal tract axons descendthrough the corona radiataC. Upper motor neurons reach theanterior limb of the internal capsuleD. Pyramidal tract separates intobundles in the midbrainE. Uncrossed pyramidal fibers continueas the ventral corticospinal tractarrow_forward
- When describing the reflex arcs and the neural pathways involved we often limit ourselves to the nerves carrying information from the muscle or tendon to the spinal cord and back. However, it should be clear from our ability to feel the tendon tap as well as the results from the Jendrassik’s maneuver test that it isn’t this simple. What other neural connections must be present ?arrow_forwardLower motor neuron lesions cause all the following, except :-a- decreased number of transmitter receptors in the denervated muscleb- atrophy of the denervated musclec- flaccid paralysis of the denervated muscled- loss of flexion withdrawal reflexarrow_forwardSomatic sensory and somatic motor information are propagated via specialized neurons. If you dip your toes in a hot tub before entering the tub, the action potentials generated by the water temperature travels via which of the following structures before it can be perceived by you? O unipolar neurons from the toes to the spinal nerve, ventral root, spinal cord, thalamus, primary somatosensory cortex O unipolar neurons from the toes to the spinal nerve, dorsal root, spinal cord, thalamus, primary somatosensory cortex O multipolar neurons from the toes to the spinal nerve, ventral root, spinal cord, thalamus, primary somatosensory cortex O multipolar neurons from the toes to the spinal nerves, dorsal root, spinal cord, thalamus, primary somatosensory cortexarrow_forward
- Somatic reflexes involve the contraction of agonist muscles and relaxation of antagonist muscles. When the agonist muscle is stimulated to contract, the antagonist muscle is inhibited. This relationship is referred to as: O contralateral inhibition O ipsilateral inhibition O reciprocal inhibition O extensor inhibitionarrow_forwardVisit this site (http://openstaxcollege.org/l/neurolab)to see a virtual neurophysiology lab, and to observeelectrophysiological processes in the nervous system,where scientists directly measure the electrical signalsproduced by neurons. Often, the action potentials occur sorapidly that watching a screen to see them occur is nothelpful. A speaker is powered by the signals recorded froma neuron and it “pops” each time the neuron fires an actionpotential. These action potentials are firing so fast that itsounds like static on the radio. Electrophysiologists canrecognize the patterns within that static to understand whatis happening. Why is the leech model used for measuringthe electrical activity of neurons instead of using humans?arrow_forwardReflexes can be somatic (as in the knee jerk response) or visceral (as in vomiting). Given that both result in an involuntary motor response, why aren’t they both considered visceral motor?arrow_forward
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