12. Which of the following statements about spinocerebellum controls movement is NOT true? a. Sensory information from the lower body is relayed to it by Nucleus Dorsalis b. The dorsal spinocerebellar tract relays sensory information from the lower body c. The fastigial nucleus influences both the red nucleus and lateral corticospinal fibers d. The vermis controls movements of axial and proximal limb muscles

12. Which of the following statements about spinocerebellum controls movement is NOT true? a. Sensory information from the lower body is relayed to it by Nucleus Dorsalis b. The dorsal spinocerebellar tract relays sensory information from the lower body c. The fastigial nucleus influences both the red nucleus and lateral corticospinal fibers d. The vermis controls movements of axial and proximal limb muscles

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter13: Anatomy Of The Nervous System

Section: Chapter Questions

Problem 8ILQ: Watch this video (http://openstaxcollege.org/l/lumbarpuncture) that describes the procedure known as...

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22. The main function of the tectospinal tract is to a. Coordinate head and eye movement b. Provide extra muscle power in periods of maximal exertion c. Regulate the amount of baseline tremor in the arms and legs d. Provide antigravity force of the arms.
10. PUT THE FOLLOWING STEPS OF THE REFLEX ARC IN THE CORRECT ORDER BY Agonist muscles are stimulated and antagonist muscles are inhibited. An electrical impulse reaches the post-central gyrus, and you interpret the sensation NUMBERING THEM. sonist muscles are stimulated and antagonist muscles are inhibited. as pain. "Ouch!" Leg extension occurs, and you move your foot off the piece of glass. Pain receptors are stimulated. The electrical impulse travels in your leg via many motor neurons. The impulse reaches the spinal cord and forks into two waves. One wave of electriaity makes a U-turn and the other begins its journey toward the brain. The message of stimulation (in the form of an electrical impulse) travels in the leg via many sensory neurons. You step on a piece of glass.
14. Suppose a person has spinal cord damage at the cervical level. Would this stop the knee-jerk reflex? How would it affect the plantar (Babinski) reflex? Explain. nis bonsts bns 15. Spinal cord damage interrupts descending motor tracts that act to suppress the activity of spinal motor neurons. Use this information, and the muscle stretch reflex pathway, to explain why someone with a spinal cord injury can have muscle spasms below the level of the injury. a banm
10. Which fiber bundle has bidirectional connections between the septal nuclei, lateral hypothalamic nucleus, tuberal nucleus a. stria terminalis b. Medial forebrain bundle c. Mammillothalamic tract d. Mammillotegmental tract
. are responsible for regulating the sensitivity of the musclespindle.a. Alpha motor neurons d. Golgi tendon organsb. Sensory neurons e. Inhibitory interneuronsc. Gamma motor neurons
3. Reflex arc hilial stimulus musde stretch) Match the descriptions of steps of a reflex arc with the labeled diagram above: Located in the CNS, this structure receives sensory impulses and sends out motor impulses This cell delivers nerve impulses to an effector organ This structure contracts as a result of a stimulus _F_ This structure responds to a stimulus This cell delivers nerve impulses to the CNS
3. Can a person has absent of Achilles reflex while maintaining knee reflexes?
7.What brain centers have major roles in controlling movement, and what are these roles?
Sensory impulses from spindles of a stretched muscle could inhibit antagonistic muscles by :-a- directly inhibiting γ-motor neurons of the antagonistic musclesb- directly inhibiting the α -motor neurons of the antagonistic musclesc- inhibiting the transmitter release from the central terminals of afferents from the spindles of the antagonistic musclesd- activation of inhibitory interneurons
1. Describe a scenario where someone would have a lesion of the corticospinal tract on one side of the spinal cord. How would the presentation differ if the corticospinal tract on both sides of the spinal cord is affected? In your discussion specify a specific vertebral level and explain what the symptom would look like. How would reflexes look above the level of the lesion, at the level of the lesion, and below the level of the lesion?How might you be able to determine at what level of the vertebrae, the lesion is located?
You have a patient that has lost all sensation in the muscles innervated by the L5 level of the spinal cord but can still move those muscles. What is the most likely cause of the deficit? Cut L5 Ventral root Cut L5 spinal nerve Cut L5 dorsal root Spinal cord injury at the L5 level 2. You place a recording electrode into a Group Ia afferent and a separate recording electrode into a Group Ib afferent from the biceps muscle. You also place a length transducer and a force transducer on the muscle. Draw what you would expect to record from all of your recording devices at rest for 5 s, during a twitch contraction, and then 5 s after the contraction. Be sure to label all axes of your recordings. 3. A mouse you just discovered has either ALS or myasthenia gravis. Assuming that you can do invasive testing on this mouse, describe how you would figure out which disease the mouse has. You must use some electrophysiological recording in your test. Be specific about what exactly you are…
23. The basal ganglia project primarily to which nucleus of the thalamus? a. Mediodorsal b. Ventral anterior c. Anterior d. Ventral posterior lateral 22. The main function of the tectospinal tract is to a. Coordinate head and eye movement b. Provide extra muscle power in periods of maximal exertion c. Regulate the amount of baseline tremor in the arms and legs d. Provide antigravity force of the arms.