Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 11CYR
Place the following sequence of events for the detection of somatic sensation in the proper order. Place a 1 by the first event, a 2 by the second event, and so on.
a. _________ The central process transmits the action potential to a second-order sensory neuron in the CNS.
b. ________ The action potential is transferred to the central process in the posterior root ganglion.
c. ________ The stimulus triggers an action potential.
d. _________ The signal is transferred to other CNS sensory neurons for eventual perception and interpretation.
e. _______ The action potential is propagated along the peripheral process of the neuron.
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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.
Fill in the blanks with the correct term chosen from the following: afferent motor effectors peripheral efferent receptors If you touch a hot stove with your hand, the sensory (1) ________________ in your hand send a signal of pain to the CNS through the (2) ________________ axons of the (3) _______________ nervous system. When the information reaches the CNS and is processed, a(n) (4) ________________ response is sent through the (5) ________________ axons of the PNS system to skeletal muscles that are (6) ________________.
A 10-year-old girl with Type I diabetes develops a neuropathy limited to sensory neurons with free nerve endings. Quantitative sensory testing will reveal higher-than-normal thresholds for the detection of which of the following?
a. Fine touch
b. Vibration
c. Pressure
d. Temperature
e. Muscle length.
Chapter 13 Solutions
Human Anatomy & Physiology
Ch. 13.1 - What two subclasses make up the sensory division...Ch. 13.1 - 2. What is a lower motor neuron? How are upper...Ch. 13.1 - In what ways do the somatic and visceral motor...Ch. 13.1 - What structures are found in a peripheral nerve?Ch. 13.1 - Prob. 5QCCh. 13.1 - Prob. 6QCCh. 13.1 - How are sensations detected in the PNS and...Ch. 13.1 - 8. How are motor impulses transmitted from the...Ch. 13.2 - Prob. 1QCCh. 13.2 - List the Roman numeral, origins, destinations, and...
Ch. 13.2 - List the Roman numeral, origins, destinations, and...Ch. 13.2 - List the 12 pairs of cranial nerves in ascending...Ch. 13.2 - Prob. 5QCCh. 13.3 - Prob. 1QCCh. 13.3 - What are the anterior and posterior rami, and what...Ch. 13.3 - Prob. 3QCCh. 13.3 - Prob. 4QCCh. 13.3 - Prob. 5QCCh. 13.3 - Prob. 6QCCh. 13.4 - 1. What is sensory transduction?
Ch. 13.4 - Prob. 2QCCh. 13.4 - 3. What are the three components of a typical...Ch. 13.4 - Prob. 4QCCh. 13.4 - What is the two-point discrimination threshold,...Ch. 13.4 - What is a dermatome?Ch. 13.4 - 7. Why is visceral pain often perceived as...Ch. 13.5 - 1. What are the main differences between an upper...Ch. 13.5 - 2. What is a motor neuron pool?
Ch. 13.5 - What is the general sequence of events for...Ch. 13.6 - Prob. 1QCCh. 13.6 - 2. How do intrafusal and extrafusal muscle fibers...Ch. 13.6 - Prob. 3QCCh. 13.6 - 4. How do Golgi tendon organs and muscle spindles...Ch. 13.6 - How do polysynaptic and monosynaptic reflex arcs...Ch. 13.6 - Prob. 6QCCh. 13.6 - What are some potential effects of sensory...Ch. 13.6 - How do upper and lower motor neuron disorders...Ch. 13 - Mark the following statements as true or false. If...Ch. 13 - Prob. 2CYRCh. 13 - 3. Define each of the following terms in your own...Ch. 13 - First, write the Roman numeral that corresponds to...Ch. 13 - Prob. 5CYRCh. 13 - Match the following nerves with the structures...Ch. 13 - First-order somatic sensory neurons are...Ch. 13 - Prob. 8CYRCh. 13 - Prob. 9CYRCh. 13 - 10. Merkel cell fibers, tactile corpuscles,...Ch. 13 - 11. Place the following sequence of events for the...Ch. 13 - How do upper and lower motor neurons differ?Ch. 13 - 13. List and describe the basic steps involved in...Ch. 13 - 14. The lower motor neurons that innervate...Ch. 13 - Fill in the blanks:______ detect the degree to...Ch. 13 - Which of the following is the correct order of...Ch. 13 - 17. Mark the following statements as true or...Ch. 13 - Prob. 18CYRCh. 13 - Prob. 1CYUCh. 13 - Prob. 2CYUCh. 13 - Prob. 3CYUCh. 13 - Prob. 1AYKACh. 13 - Jason presents for evaluation after a severe...Ch. 13 - 3. When Mr. Williams goes to the emergency...Ch. 13 - 4. Maria is a 3-year-old who has been diagnosed...Ch. 13 - Another feature of CIPA is anhidrosis, or the...
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- When arm muscles hurt after heavy exercise, the pain is detected bya. neurotransmitters.b. interoceptors.c. associative neurons.d. exteroceptors.arrow_forwardMatch the numbers in Figure with the description of what is happening as the sensory neurons, interneurons, and motor neurons communicate with one another. Start with number 1. ____ 1 Graded potential starts in a sensory receptor in the skin. ____ A t a second synapse, a graded potential followed by an action potential occurs in a secondary interneuron, which reaches the cerebral cortex. The graded potential triggers an action potential in a sensory neuron. ____ The lower motor neuron forms a neuromuscular synapse with the hand muscles, which causes the muscles to contract as he writes the letter. ____ In another synapse, the neurotransmitter creates a graded potential, which triggers an action potential in the lower motor neuron. ____ A primary interneuron forms an action potential and crosses to the opposite side of the brain. ____ A stimulus from the brain causes a graded potential and then an action potential to form in an upper motor neuron (which crosses back to the original side…arrow_forwardNerve impulses generated by nociceptors are interpreted bythe brain asa. fine touch.b. heat.c. pain.d. pressure.arrow_forward
- Which options are true regarding the gate control theory of pain? Select all that apply: a. Mechanoreceptor fibres synapse directly onto nociceptor fibres and potentiate incoming pain signals b. Mechanoreceptor fibres synapse onto interneurons, which synapse onto nociceptor fibres and potentiate incoming pain signals c. Applying a mechanical stimulus, such as grabbing the injured area, will soothe the injury d. Mechanoreceptor fibres synapse directly onto nociceptor fibres and inhibit incoming pain signals e. Mechanoreceptor fibres synapse onto interneurons, which synapse onto nociceptor fibres and inhibit incoming pain signals f. Applying a mechanical stimulus, such as grabbing the injured area, is a natural defensive reaction, but does little to actually affect incoming pain signals.arrow_forwardTouch receptors in the skin surface are ipsilateral to the side of the somatosensory cortex on which their input is processed A.True B.Falsearrow_forwardWhich of the following statements about the eye is/are TRUE? Group of answer choices Parasympathetic (sympathetic) innervation of the sphincter pupillae stimulates pupil dilation. Photoreceptors in the retina are of two types: rods and cones. Eye color is determined by that of the iris. A. Light striking the fovea centralis goes unnoticed and is commonly called the "blind spot". B. Light entering the eye passes through the cornea, anterior chamber, pupil, lens, and vitreous body, from outer to inner.(posterior only) C. Movement of the extrinsic muscles of the eye is controlled by the autonomic (optic nerve) nervous system. D. Because lacrimal fluid ultimately enters into the nasal cavity, people often sniffle when they cry. F. The adjustability of the lens allows the eye to focus on nearby objects.arrow_forward
- ILLUSTRATE the following and give their function: A. Cross Section of a Nerve B. Cross Section of the Spinal Cord C. Neuron and Neuroglia in Nerve smear NMN mmnarrow_forwardChoose the right one : < > stimuli will activate the somatic corpuscular first order neurons. A. <Temerature> B, <Light physical pressure> C, <Noxious> D, <Strong physical pressure> E, <Vibration>arrow_forwardDecreased sensitivity to a continued stimulus is calleda. adaptation. d. conduction.b. projection. e. phantom pain.c. translation.arrow_forward
- Nociceptors respond toa. changes in temperature at the site of the receptor.b. compression, bending, or stretching of cells.c. painful mechanical, chemical, or thermal stimuli.d. light striking a receptor cellarrow_forwardthe physiologic principle underlying intensity of a sensation is: which is the correct answer? A. increased numer of action potentials B. graded potentials C. lower number of receptors D. localization of stimulusarrow_forwardDrag the labels onto the diagram to identify the components of somatic sensory pathways. First synapse in medulla, ipsilateral to the stimulus First synapse in spinal cord, ipsilateral to the stimulus Fine touch, vibration, proprioception Crosses midline in spinal cord Second synapse in thalamus, contralateral to the stimulus Pain, temperature, coarse touch Third synapse in primary somatic sensory cortex, contralateral to the stimulus Crosses midline in medulla SOMATOSENSORY PATHWAYSarrow_forward
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