Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Chapter 15, Problem 2RFT
Summary Introduction
To review:
Match the term sensory with the most closely related description given below:
Second order
Pain, temperature, crude touch, pressure
Voluntary control skeletal muscle
Subconscious control of distal limb musculature
Afferent
Information about “what,” “where,” and “when”
Unconscious proprioception
Crossover
Position change noise-related
Introduction:
Tracts are special structures organized in the spinal cord. These tracts are further divided into two divisions, namely the ascending tract and the descending tract. The ascending tract transmits sensory signals and the descending tract transmits motor signals.
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The shape of the cell bodies of upper and lower motor neurons are structurally classified as ........................ and..................... , respectively
Fill in the blanks below:
Sensory neurons carrying information into the spinal cord synapse at the .................. horn.
Motor commands exiting the spinal cord are generated in the............... horn.
The interneurons that process sensory information and determine the appropriate motor output are found in the.................... matter of the spinal cord.
The myelinated axons of the neurons carrying information to and from the brain are found in the .............. matter.
A ganglion is a collection of (a) neuron cell bodies, (b) axons of motor neurons, (c) interneuron cell bodies, (d) axons of sensory neurons.
Chapter 15 Solutions
Human Anatomy (9th Edition)
Ch. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 2RFTCh. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 4RFTCh. 15 - Prob. 5RFTCh. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 7RFTCh. 15 - Prob. 8RFTCh. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 10RFT
Ch. 15 - Prob. 11RFTCh. 15 - Which of the following are spinal tracts within...Ch. 15 - Prob. 13RFTCh. 15 - 14. Give the anatomical names of the spinal tracts...Ch. 15 - Prob. 1RCCh. 15 - Prob. 2RCCh. 15 - Why do the proportions of the sensory homunculus...Ch. 15 - Prob. 4RCCh. 15 - 5. Compare the actions directed by motor commands...Ch. 15 - Prob. 1CTCh. 15 - As a result of a snowboarding accident, John is...
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- the bundle of fibers that the spinal cord continues down is called the ........................arrow_forwarddamage to which spinal nerve might produce the following physical findings? a- inability to extend the forearm and hand......................................... b- inability to breathe............................................ c- inability to feel the skin over the anterolateral thigh....................................... d- inability to dorsiflex the foot.............................arrow_forwardMatch cells and function : Oligodendrocyte , Astrocytes 1. .......................... enhances the velocity of electrical transmission of an action potential along an axon in the CNS. 2. .......................... glial cells act locally to maintain normal electrolyte composition of the cerebrospinal fluid.arrow_forward
- Fill in the blanks: The shape of the cell bodies of upper and lower motor neurons are structurally classified as ............ and.................., respectivelyarrow_forwardIdentify the Golgi tendon reflex (which is an innate reflex) as (a) spinal or cranial, (b) somatic or visceral, (c) monosynaptic or polysynaptic, and (d) ipsilateral or contralateral.arrow_forwardThe CNS interprets sensory information entirely on the basis of the, (a) strength of the action potential. (b) number of action potentials. (c) area of brain stimulated. (d) a, b, and c are correct.arrow_forward
- Fill in the blanks: The three most clinically important spinal roots in the arm and leg are ............................ and ........................... , respectively.arrow_forwardPatient comes to the physician because in church he has begun failing every time he closes his eye while standing for prayer. He has….. High and stamps it forcefully on the ground with each step. He must watch his foot while walking to avoid striking down or other obstacles…. Symptoms most likely involves which of the following structures? a) Cerebellum b) Joints c) Muscles d) Motor cortex e) Posterior columnsarrow_forwardnerve fascicles are formed and covered by........................arrow_forward
- (c) Peripheral nervous system (PNS) consists of nerves that lie outside the brain and spinal cord which primarily function is to connect the CNS to the organs. (i) Predict FOUR (4) situations that could be faced by someone who receive the reflection from PNS. (ii) Discuss TWO (2) possible damages in nervous system when someone does not reflect to the stimuli that enter the body.arrow_forwardWhich statement is true regarding a spinal (peripheral) nerve? A) they can contain afferent axons only B) each nerve ending contains a single axon C)They innervate all regions of the body, including the head D) there are 31 pairs of spinal nervesarrow_forwardThe final relay point for ascending sensory information that will be projected to the primary somatosensory cortex is the, (a) hypothalamus. (b) thalamus.(c) spinal cord. (d) medulla oblongata.arrow_forward
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