Which of the following is true about lafge receptive fields? O Many primary sensory neurons converge onto a single secondary neuron O The larger the receptive field the greater the discriminative ability O The tongue has a large receptive field O Few primary sensory neurons converge onto a single secondary neuron

Which of the following is true about lafge receptive fields? O Many primary sensory neurons converge onto a single secondary neuron O The larger the receptive field the greater the discriminative ability O The tongue has a large receptive field O Few primary sensory neurons converge onto a single secondary neuron

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

Chapter15: The Autonomic Nervous System

Section: Chapter Questions

Problem 4ILQ: Watch this video (http://openstaxcollege.org/l/pupillary) to learn about the pupillary reflexes. The...

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Watch this video (http://openstaxcollege.org/l/DanielleReed) to learn about Dr. Danielle Reed of the Monell Chemical Senses Center in Philadelphia, PA, who became interested in science at an early age because of her sensory experiences. She recognized that her sense of taste was unique compared with other people she knew. Now, she studies the genetic differences between people and their sensitivities to taste stimuli. In the video, there is a brief image of a person sticking out their tongue, which has been covered with a colored dye. This is how Dr. Reed is able to visualize and count papillae on the surface of the tongue. People fall into two large groups known as tasters and non-tasters on the basis of the density of papillae on their tongue, which also indicates the number of taste buds. Non-tasters can taste food, but they are not as sensitive to certain tastes, such as bitterness. Dr. Reed discovered that she is a non-taster, which explains why she perceived bitterness differently than other people she knew. Are you very sensitive to tastes? Can you see any similarities among the members of your family?
Actin and myosin in the sarcomeres will remain Douna. O Actin and myosin in the sarcomeres are in the unbound state. Question 41 Which of the following is an example of sensory adaptation? O After the wound healed, the pain also went away. O You notice the smell of liver and onions cooking when you enter the kitchen, but soon you do not notice the odor although they are still cooking. When it is totally dark, the rods and cones of the eyes do not send any visual impulses. O The act of trying to read a book while riding in a car causes eyestrain. Question 42 What determines "loudness"? O The number of hair cells that are stimulated. O The wave frequency or number of vibrations per second. O As the noise gets louder, the auditory (Eustachian) tube expands. 1 pts 1 pts
Which of the following statements comparing the LGN and the retina is correct? O Both are involved in the reconstruction (as opposed to point-by-point deconstruction) of visual stimul Both have ciells that respond to lines of a particular onentation in their receptive field. O Both get significant feedback connections (top-down infuence O Both have cells with concentric centersurraundreteptive fields O The retina has odenteand off-kenterteceptive eds, while the LGN nly tus Ton-center receptive fields
of stimulation that causes the receptor The adequate stimulus of a sensory receptor is the to initiate a response. O quantity O nature
Where would you expect the density of sensory receptors to be the highest? The lips The leg O The back of the hand O The palm of the hand
A friend of yours wants to better understand how our brains can distinguish between soft and loud sounds. Which of the following best explains this to your friend? O The inner ear is equiped with different sensory cells that get "excited" for each volume of sound disturbace. O Louder sounds cause larger action potentials than do softer sounds. Louder sounds cause smaller action potentials than do softer sounds. O Louder sounds induce a lower frequency of action potentials than do softer sounds. O Louder sounds induce a higher frequency of action potentials than do softer sounds. MacBook Pro #3 $ & %24
Rapidly adapting tactile receptors include all the following types, except :-a- Merkel discsb- Meissner corpusclesc- Pacinian corpusclesd- hair end organs
In the process of sensory coding Recruitment of additional neurons occurs with a weak stimulus in order to make the stimulus stronger. The larger the receptive field of a sensory receptor, the greater the expected acuity and the more accurate the two-point discrimination. Lateral inhibition of neighboring receptors resulting in a relative reduction of action potentials in the neighboring second order neurons would be expected to increase acuity. A receptor potential that remains suprathreshold into the absolute refractory period will result in additional action potentials.
Slowly adapting receptors differ from rapidly adapting receptors in :-a- stopping to discharge after a relatively longer period of constant stimulationb- detecting the dynamic properties of stimulic- detecting velocity of stimulid- generating receptor potentials as long as stimulus is applied.
After hitting your thumb accidentally with a hammer, you quickly withdraw your hand. You donot feel pain for a short period of time. This sequence of events may be explained by the fact that theA. threshold of the receptor has been so greatly exceeded that the neuron does not pass themessage to the brainB. neural impulse is so large that the brain is unable to interpret the signal because it is beyond therange of toleranceC. neural processing occurred in the spinal cord first, which caused you to quickly remove yourthumb from further damageD. sensory receptors in the thumb were damaged by the blow and are unable to initiate a stimulusto the sensory nerve
Sensory receptors are classified functionally according to the following criteria, except :-a- their location in the bodyb- the nature of tissues in which they are foundc- the nature of stimuli acting on themd- their connection with cerebral coretx
example of a Dogan? ouéput/efferent 1lwhatis an pakway ngan ? palkway Somatic mobor 2) Optic nerve Sensom hair cell neuron neuron muscle fiber Sympathetic nerve heart cochlea