ANAT.+PHYSIO.1-LAB.MAN. >CUSTOM<
20th Edition
ISBN: 9781264303106
Author: VanPutte
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 12, Problem 5RAC
Summary Introduction
Introduction:
The automatic response to a particular stimulus is referred to as a reflex. It takes place without conscious thought. Somatic reflex is an example of reflex, and it prevents the human body from suddenly moving or falling due to external forces.
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Which of the following statements are true of sensory pathways? (Read carefully and select all the correct statements.)
A.
Sensory neurons carry impulses from receptors to the CNS.
B.
Sensory tracts include peripheral nerves such as the femoral nerve.
C.
Sensory receptors are different in that each type detects a specific type of change.
D.
Sensory receptors are similar in that they all interpret impulses the same way.
E.
Most of the sensory areas are in the cerebral cortex.
F.
The cranial nerves involved in sensations are part of sensory tracts.
The simplest type of nervous system response is calleda. stimulus.b. effector action.c. reflex.d. affector action.
Mark the following statements on the role of the brain in movement as true or false. If a statement is false, correct it to make a true statement. a. The dopaminergic neurons of the substantia nigra enhance the actions of the caudate nucleus and putamen. b. The cerebellum monitors the initiation of movement but does not monitor ongoing movements. c. The basal nuclei inhibit inappropriate movements and are required for the initiation of movement. d. The correction of motor error by the cerebellum can occur over the long term by motor learning
Chapter 12 Solutions
ANAT.+PHYSIO.1-LAB.MAN. >CUSTOM<
Ch. 12.1 - Prob. 1AYPCh. 12.1 - Name the meninges surrounding the spinal cord....Ch. 12.1 - What is the thecal sac? What two structures hold...Ch. 12.1 - Describe the arrangement of gray arid white matter...Ch. 12.1 - Where are the cell bodies of somatic motor and...Ch. 12.1 - What kinds of neurons are in the dorsal roots, in...Ch. 12.2 - Prob. 7AYPCh. 12.2 - Describe the operation of a gamma motor neuron.Ch. 12.2 - Prob. 9AYPCh. 12.2 - Prob. 10AYP
Ch. 12.2 - Prob. 11AYPCh. 12.3 - Prob. 12AYPCh. 12.3 - What is a dermatome? Why are dermatomes clinically...Ch. 12.3 - Prob. 14AYPCh. 12.3 - Describe the distribution of the ventral rami of...Ch. 12.3 - Prob. 16AYPCh. 12.3 - Prob. 17AYPCh. 12.3 - Prob. 18AYPCh. 12.3 - Name the five major nerves that emerge from the...Ch. 12.3 - Name the four major nerves that arise from the...Ch. 12.3 - Prob. 21AYPCh. 12.3 - Describe the structures innervated by the...Ch. 12.3 - Prob. 23AYPCh. 12 - Prob. 1RACCh. 12 - The structure that anchors the inferior end of the...Ch. 12 - Prob. 3RACCh. 12 - Given these components of a reflex arc: (1)...Ch. 12 - Prob. 5RACCh. 12 - Several of the events that occur between the time...Ch. 12 - Prob. 7RACCh. 12 - Prob. 8RACCh. 12 - Damage to the dorsal ramus of a spinal nerve...Ch. 12 - Prob. 10RACCh. 12 - A dermatome Is the area of skin supplied by a pair...Ch. 12 - Prob. 12RACCh. 12 - The skin on the posterior surface of the hand is...Ch. 12 - The scatic nerve is actually two nerves combined...Ch. 12 - Prob. 15RACCh. 12 - Describe how stimulation of a neuron that has its...Ch. 12 - Prob. 2CTCh. 12 - Prob. 3CTCh. 12 - Prob. 4CTCh. 12 - Prob. 5CTCh. 12 - Prob. 6CTCh. 12 - Prob. 7CT
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- Which of the following statements is false? a. The spinothalamic tracts are part of the anterolateral system. b. Pain, temperature, and crude touch stimuli are carried by the anterolateral system. c. Descending pathways from the brain and spinal cord can make the spinal cord less receptive to pain stimuli. d. The thalamus serves as the “gateway” for entry of all special sensory stimuli into the cerebral cortex, with the exception of audition (hearing).arrow_forwardEmergency room doctors often shine a light into the eyes of patients with head injuries to test their pupillary reflex. The structure that relays the information between the optic nerve and the motor neuron, and the division of the nervous system that the structure is part of , respectively are: Select one: a. an interneuron and the peripheral nervous system b. the occipital lobe and the peripheral nervous system c. the occipital lobe and the central nervous system d. an interneuron and the central nervous systemarrow_forwardA structure or cell that collects sensory information is aa. motor neuron.b. receptor.c. neurolemmocyte.d. ganglion.arrow_forward
- The subdivision of the brain that does not initiate somatic motor movements, but rather coordinates and fine-tunes those movements, is the a. medulla oblongata. b. cerebrum. c. cerebellum. d. diencephalon.arrow_forwardWhen arm muscles hurt after heavy exercise, the pain is detected bya. neurotransmitters.b. interoceptors.c. associative neurons.d. exteroceptors.arrow_forwardThe neural pathway in figure 3 relays impulses that terminate at the: a. Motor cortex b. Occipital lobe c. Somatosensory cortex d. Parietal lobe e. Receptors f. Skeletal muscle g. Temporal lobearrow_forward
- What does the neuron composition of the dorsal root ganglion tell you about sensory coding in the somatosensory system? a. The large axon sizes have a slower conduction velocity than small axon sizes. b. The uniform axon sizes for all neurons indicate that they have the same conduction velocity. c. Multiple modalities or sensations can be detected from the skin. d. Only a single modality or sensation can be detected from the skin. e. Processing must occur directly in the skin since the neurons in the dorsal root ganglion are second order neurons.arrow_forwardWhat neural system is primarily activated when a book is dropped into your outstretched hands with your eyes open? a. Feedback processing controlled by lower motor neurons in the spinal cord. b. None of the answers. c. Modulation of onset responses controlled by the basal ganglia. d. Motor coordination controlled by the cerebellum. e. Feedforward processing controlled by upper motor neurons in the brainstem.arrow_forwardA reflex arc happens rapidly because the following neuron is skipped during the communication. a. sensory b. interneuron C. effector O d. motorarrow_forward
- The thoracic spinal cord has the smallest dorsal horn area because: a. the trunk is the most innervated area of the body and therefore there are more projections into the dorsal horn there. b. the trunk is the least innervated area of the body and therefore there are fewer projections into the dorsal horn there. c. most of the descending upper motor neurons have already entered the ventral horn. d. There are many motor neurons to control the small muscles around the spine.arrow_forwardThe largest, outermost portion of the brain in humans is thea. cerebellum. c. reticular activating system.b. cerebrum. d. thalamus.arrow_forwardIn which part of the brain does decussation of descending tractsinvolved in the conscious control of skeletal muscles occur?a. cerebrum d. ponsb. diencephalon e. medulla oblongatac. midbrainarrow_forward
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The Sensorimotor System and Human Reflexes; Author: Professor Dave Explains;https://www.youtube.com/watch?v=M0PEXquyhA4;License: Standard youtube license