Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Question
Chapter 27, Problem 1PIT
Summary Introduction
To review:
The “survey the landscape” figure which connects each general and special senses to the term “homeostasis” in the pull it together concept map.
Concept introduction:
Homeostasis is the term that can be referred to the stable state of the organism’s body and its internal environment. The homeostatic condition occurs by the regulation and maintenance of the bodily functions. The stability in an internal environment refers to the stability in terms of the body temperature, extracellular and intracellular fluid balance,
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Which is true regarding somatotopic organization?
Select one:
a. Certain areas of the body have much higher representation in the primary somatosensory cortex than other areas, and these regions will have finer tactile discrimination.
b. The representation of a given area of the body in the primary somatosensory cortex is directly proportional to the size of that body area (e.g., the right index finger has less representation than the right thigh).
c. The receptive fields for somatosensory neurons are circular and relatively consistent in size across areas of the body, but areas of the body with the finest tactile discrimination have many more neurons representing them in the primary somatosensory cortex.
d. There is equal representation of all areas of the body in the primary somatosensory cortex
M
Which of the following presents the elements of a sensory system in the correct order?
Select one:
Accessory structure modifies energy and sensory nerves transfer activity to central nervous system, thalamus processes
and relays activity to cerebral cortex, cerebral cortex transfers input to accessory structures and sensation or perception is
produced.
Accessory structure modifies energy, receptor transduces energy into neural activity, sensory nerves transfer activity to
central nervous system, thalamus processes and relays activity to cerebral cortex, cerebral cortex receives input and
produces sensation and perception.
Ob.
C. External receptors transduce energy into neural activity, sensory nerves transfer activity to central nervous system and
relays activity to cerebral cortex, cerebral cortex receives input and produces sensation and perception.
O d. Accessory structure modifies energy, receptor transduces energy and thalamus processes and relays activity to the
reticular…
Imagine you wake up to the smell of smoke, The sound of the fire alarm, the flashing lights of sirens, the acreage taste of smoke in the air. In other words, all your senses are reacting to this emergency. Your body goes into "flight or fight mode".
Question: in about two paragraphs, can you describe the sensory pathway that the sensory information from just one of these special senses takes to the brain to be integrated.
for example, if you were describing the smell of the smoke, how was odor detected? Which cranial nerves are involved? Where are those located? Where do they connect to the rest of the brain?
Chapter 27 Solutions
Biology: Concepts and Investigations
Ch. 27.1 - Prob. 1MCCh. 27.1 - Prob. 2MCCh. 27.1 - Prob. 3MCCh. 27.1 - Prob. 4MCCh. 27.1 - Prob. 5MCCh. 27.2 - Prob. 1MCCh. 27.2 - Prob. 2MCCh. 27.3 - Prob. 1MCCh. 27.3 - Prob. 2MCCh. 27.4 - Prob. 1MC
Ch. 27.4 - Prob. 2MCCh. 27.4 - Prob. 3MCCh. 27.5 - What are the parts of the ear, and how do they...Ch. 27.5 - How does the vestibular apparatus provide the...Ch. 27.6 - Prob. 1MCCh. 27.6 - Prob. 2MCCh. 27 - As you snuggle into bed, you feel the weight of...Ch. 27 - Prob. 2MCQCh. 27 - Prob. 3MCQCh. 27 - The structures that enable bees to see flowers are...Ch. 27 - What is the function of hair cells in the cochlea?...Ch. 27 - A male moth uses his antennae to detect the...Ch. 27 - Prob. 2WIOCh. 27 - Prob. 3WIOCh. 27 - Try as you might, you cannot tickle yourself....Ch. 27 - Prob. 5WIOCh. 27 - How does the nervous system differentiate among...Ch. 27 - Prob. 7WIOCh. 27 - Prob. 8WIOCh. 27 - Explain why some people hold their nose when...Ch. 27 - Suppose you put on glasses belonging to someone...Ch. 27 - Prob. 11WIOCh. 27 - Prob. 12WIOCh. 27 - In a rare condition called synesthesia,...Ch. 27 - Prob. 1PITCh. 27 - Prob. 2PIT
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- Describe sensory adaptation and then give one example of a case in which one might interpret this to be an advantage and one that could be considered a disadvantaged.arrow_forwardGive the meaning of the statement, “The idea that all sense organs behave as biological transducers is a unifying concept in sensory physiology.”arrow_forwardAn example of a sensory neuron is one that leads from a pain receptor in the finger to the spinal cord. A pin can be pressed against the skin without eliciting a response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. How do we sense different types of pain (very painful vs. not painful at all)? Using your knowledge of threshold potential and the all-or-none principle, explain how it is possible to sense different levels of pain.arrow_forward
- An example of a sensory neuron is one that leads from a pain receptor in the finger to the spinal cord. A pin can be pressed against the skin without eliciting a response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. How do we sense different types of pain (very painful vs. not painful at all)? Using the threshold potential and the all-or-none principle, explain how it is possible to sense different levels of pain.arrow_forwardWhich statement about color perception theory is true? The mechanisms involved in opponent-process theory take place earlier in the perceptual process than those involved in trichromatic theory. The processes proposed by both trichromatic theory and opponent-process theory take place in the primary visual cortex. Trichromatic theory and opponent-process theory are both strongly supported by behavioral and physiological evidence. Recently, trichromatic theory has overtaken opponent-process theory as the best explanation of color and hue perception.arrow_forwardWhich statement about a center-surround receptive field is false? Select one: a. It can involve an inhibitory response (e.g., to touch) b. It is characterized by a circular center and a doughnut-shaped surround c. It is found only in primary sensory cortex d. It can be mapped by electrophysiological recording techniques e. It can involve an excitatory response (e.g., to touch)arrow_forward
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