Exam 34: Neurons, Sense Organs, and Nervous Systems

One major difference between the stretch receptor cells of muscle fibers and the chemoreceptors found in the nasal cavity is that only stretch receptors contain

After a test,Amanda relaxes,and her heart rate and breathing rate return to normal.This suggests that her _______ nervous system is activated and is releasing _______.

Increase in which neural response is not likely to be due to short-term synaptic plasticity?

Neurons and muscle cells have electrical polarity between the inside and outside of their cell membranes,enabling them to generate and transmit action potentials.This specialization means that both types of cells are _______ cells.

How do the ommatidia of the compound eyes of arthropods differ from the image-forming eyes of vertebrates?

Which statement about myelin is false?

Describe the steps of an experiment that could be designed to determine the part of the brain involved in mathematical learning.

In simple organisms such as the sea anemone,the nervous system consists of a _______.

In which organism are you likely to find myelinated axons?

The preganglionic neurons of the sympathetic division synapse with their postganglionic neurons

In the mammalian eye,1‒2 percent of ganglion cells are photosensitive.If these cells were not photosensitive,which function would mammals be unable to carry out?

The type of neurons most prevalent in the central nervous system and that integrate information and make decisions about responses are called _______.

Refer to the diagram below.This diagram illustrates the generating of an action potential by a process of

A birdwatcher who is learning to identify a new bird notes the bird's color pattern,its call,and its name.Each time she sees the new bird,she becomes more efficient at identifying it.In regard to underlying synaptic plasticity,which action is likely occurring in the birdwatcher's brain?

A male insect's body contains neurons that detect tiny concentrations of pheromones,or attractant molecules secreted by the female insect.The neurons change these chemical signals into electrical signals.Would these neurons be considered sensory receptor neurons?

When an individual rod or cone cell is stimulated with light,

The most rapid conduction of an action potential will occur in an axon of which type?

If only the K⁺ ion channels in a cell membrane are open,the cell membrane will move toward a(n)

Brain mapping shows that sensory and motor functions in the human cerebral cortex are arranged

The Nernst equation calculates the membrane equilibrium potential to be approximately -80 mV,which is slightly different from the measured resting neuron potential of -60 to -70 mV.The difference most likely occurs because