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16 Cards in this Set
- Front
- Back
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An invertebrate statocyst contains ______, which surround movable _______. Changes in body position move the latter and thus trigger action potentials. |
Sensory hair cells; statoliths |
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Of the following statements concerning the sympathetic and parasympathetic branches of the nervous system, which is true? |
the sympathetic system generally produces an increased physical activity, while the parasympathetic system produces a decrease in physical activity |
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Your finger touches a hot pot on the stove. Information is carried via ____ neurons to the ______, where neurons carry information to the _______ making you aware of the hot pot |
afferent; thalamus; primary somatosensory area |
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Nociceptors detect ______ |
pain |
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Which statement about sensory receptors is NOT correct? |
all are correct: sensory receptors send the sensory signal to the central nervous system as an action potential, the conversion of a stimulus into a receptor potential is called sensory transduction, sensory receptors respond to stimuli by undergoing a change in membrane potential called receptor potential, each sensory receptor has a defined receptive field within which the receptor responds to a stimulus |
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In human skin, many of the mechanoreceptors are _________. |
free nerve endings |
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Jalapeno peppers contain the chemical capsaicin. If you lack the nociceptors that bind capsaicin, what would be the predicted outcome? |
you would be able to eat foods containing high concentrations of capsaicin and do not feel any burning in your mouth |
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The portion of the nervous system that is responsible for increasing heart rate, as well as increasing movement of the intestines, is the |
autonomic nervous system |
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Which of the following structures is NOT part of the vestibular apparatus? |
cochlea |
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Organisms can perceive different intensities of a stimulus by |
an increase in the frequency of action potentials generated by an afferent neuron as well as an increase in the numbers of afferent neurons generating action potentials, but without any change in the intensity of individual action potentials generated by the neurons |
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Which of the following brain-structure-function sets are incorrectly matched? |
hypothalamus-controls voluntary movements |
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You encounter a bear while hiking, which of the following predominates and causes an increase in your heart rate and breathing to help you run away? |
the sympathetic nervous system |
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Thermoreceptors can be used for which of the following functions? |
all choices are correct: to detect prey, to aid in regulation of body temp, to detect body heat, to cause pain response |
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Which structure vibrates and bends the sensory hairs? |
5 |
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Many aquatic invertebrates use this structure to perceive changes in their body's position and orientation |
statocysts |
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Which of the following animals do NOT use echolocation? |
moths |
