Biology questions, they can be more than 1 answer, please post why you think tha
ID: 56967 • Letter: B
Question
Biology questions, they can be more than 1 answer, please post why you think thats the answer and explain yourself! Thank you!
1.Convergence of many primary sensory neurons onto a single secondary sensory neuron:(check all that apply, can be more than 1)
a)leads to larger receptive fields with better discrimination
b)leads to smaller receptive fields with worse discrimination
c)leads to larger receptive fields with worse discrimination.
d)leads to smaller receptive fields with better discrimination.
2.Lateral inhibition:(check all that apply)
a)results in reduction of firing of neurons on the 'sides' of a central sensory neuron
b)results in increased contrast of sensory stimuli
c)the neurons inhibited actually fire fewer action potentials after being inhibited than they do at 'rest'
d)means that only certain areas of skin can be optimally activated by tactile stimuli.
3.A stimulus that is large in amplitude, but brief, will:(check all that apply, can be more than 1)
a)Produce a large number of action potentials at the onset of the stimulus in a "tonic receptor".
b)Produce a large number of action potentials at the onset of the stimulus in a "phasic receptor"
c)Produce a large number of action potentials for the duration of the stimulus in a "phasic receptor".
d)Produce a large number of action potentials for the duration of the stimulus in a "tonic receptor".
4.The Tenth (X) cranial nerve (aka: the Vagus nerve):(Check all that apply)
a)Comes out of your spinal cord at the level of T (thoracic) 10
b)Comes out of your medulla.
c)Innervates your heart.
d)Innervates your intestines.
e)Innervates your lungs
Explanation / Answer
1) Convergence of many primary sensory neurons onto a single secondary sensory neuron leads to larger receptive fields with worse discrimination and leads to smaller receptive fields with better discrimination. Thus, the correct options are (c) and (d).
2) Lateral inhibition results in reduction of firing of neurons on the 'sides' of a central sensory neuron. Thus, the correct option is (a).
3) Produce a large number of action potentials at the onset of the stimulus in a "tonic receptor" and Produce a large number of action potentials for the duration of the stimulus in a "phasic receptor". Thus, the correct option are (a) and (c).
4) The Tenth (X) cranial nerve Comes out of your spinal cord at the level of T (thoracic) 10 and Comes out of your medulla. Thus, the correct options are (a) and (b).
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