BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 44.2, Problem 1CC
Summary Introduction
To explain: The different types of touch sensation.
Introduction: There are several types of receptors present in our body which detect the different type of sensations. These receptors send signals to the central nervous system by which the body show response to the sensation.
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Which parts of your body are most sensitive to touch?
Given that touch receptors are not uniformly distributed on the body surface, name two sites where the highest density of receptors are found.
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Chapter 44 Solutions
BIOLOGY
Ch. 44.1 - Prob. 1CSCh. 44.2 - Prob. 1CCCh. 44.2 - Prob. 1CSCh. 44.2 - Prob. 2CCCh. 44.2 - Prob. 2CSCh. 44.2 - Prob. 3CCCh. 44.4 - Prob. 1CCCh. 44.5 - Prob. 1CSCh. 44.5 - Why is red-green color blindness rare in females?Ch. 44.5 - Prob. 2CS
Ch. 44.5 - Prob. 2CCCh. 44.6 - Prob. 1EQCh. 44.6 - CoreSKILL Of the two hypotheses explaining how...Ch. 44.6 - Prob. 3EQCh. 44.6 - Prob. 1CCCh. 44 - The process in which incoming sensory stimulation...Ch. 44 - Prob. 2TYCh. 44 - ______blanksense pain; ______blank sense heat or...Ch. 44 - Prob. 4TYCh. 44 - In which process(es) are hair cells involved? a....Ch. 44 - Prob. 6TYCh. 44 - In the mammalian eye, light from near or far...Ch. 44 - Prob. 8TYCh. 44 - Prob. 9TYCh. 44 - The stimulation for olfaction involves odorant...Ch. 44 - Prob. 1CQCh. 44 - Prob. 2CQCh. 44 - Prob. 3CQCh. 44 - Discuss the several types of sensory stimuli that...Ch. 44 - Prob. 2COQ
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- The nerve fibers that transmit pain convey action potentials faster than the nerve fibers that convey the sense of touch True or Falsearrow_forwardCondtions that compress peripheral nerves differentially affect nerve fibres over time, causing loss of sensorimotor function. What is the correct order of loss (first to last)? pain & temperature, touch, vibration, and joint position sense joint position sense, pain & temperature, touch, and vibration pain & temperature, vibration, joint position sense and touch joint position sense, touch, vibration and pain & temperature touch, vibration, joint position sense, pain & temperaturearrow_forwardHow does the concentration of touch receptors seem to vary from region to region?arrow_forward
- How do the responses to skin sensations differ between the somatosensory cortex and the insular cortex or the anterior cingulate cortex? Please explain properly, don't copy paste from Googlearrow_forwardWhen people are tickled, light touch receptors are activated, causing a range of different responses, including squirming or movement away from the stimulus. Match the step in the tickle response homeostasis loop with the correct labelarrow_forwardWhich areas of the body are the most sensitive to touch? Least? Relate the size of the two-point threshold on different areas of the body to touch receptor density and receptive field size.arrow_forward
- Which of the following correctly describes receptors in the skin? Select one: O a. All receptor types are spread uniformly throughout dermal tissue. Ob. Pacinian corpuscles, Ruffini endings, and Krause end bulbs detect pain. O c. One type of nerve cell detects both hot and cold. O d. Temperature receptors are free nerve endings in the dermis. Oe. Meissner corpuscles and Merkel disks detect fine touch.arrow_forwardWhich of the following is NOT true about the touch pathway for the hands? Travels up the dorsal column-medial lemniscal pathway All of the answers are true O Receptors are bare nerve endings Fibers are thicker and more myelinated than receptors for pain O Decussates in the medullaarrow_forwardEskimos wear a great deal of clothing and have limited exposure to uv light, but do not suffer from Vitamin D deficiency. Why? A person who has been playing in the snow notices that their fingertips are very pale. why? Where would you expect to find a high concentration of Merkel discs and other tactile corpuscles? Why? An old wives' tale says that if you keep hair trimmed at the ends, it will grow faster. Please discuss why this is not true. Explain why you can scrap your skin but not bleed.arrow_forward
- Which of the following nerve fibers exhibits EFFERENT nerve function? Group of answer choices: Facial nerve receiving gustatory impulses from the tongue Trochlear nerve activating extraocular muscles Optic nerve carrying photo signals Trigeminal nerve sending pain, touch and temperature sensations from your face to your brainarrow_forwardAfter spinning in an office chair and then standing up quickly, you notice that the room is still spinning even though your head rotation has ceased. Which option best explains this phenomenon? Hair cells release a small amount of neurotransmitter at rest. The continued depolarization of hair cells within the utricle and saccule. Fluid continues to circulate through the semicircular canals. Two of the above.arrow_forwardWhich of the special senses is based on the following events? Membrane vibrations cause fluid movements, which lead to bending of mechanoreceptors and firing of action potentials. a. taste b. smell c. hearing d. visionarrow_forward
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