A&P ch. 11 week 11 – Flashcards

Which neuroglial cell type surrounds the cell bodies of neurons in the peripheral nervous system?

Name the glial cell at F.

Many neurons have many short, branching extensions called dendrites. What is the benefit of these structures for a neuron?

somatic motor neurons control the activity of

Bundles of neurons in the central nervous system are called tracts. True or False?

Which of the following pairings does NOT fit? - association neuron: functional classification - multipolar neurons: peripheral nervous system sensory neurons - afferent neurons: sensory neurons - motor neurons: efferent neurons.

The cell bodies in the highlighted structures belong to which division of the autonomic nervous system? (Lateral Horns)

Which of the following types of glial cells monitors the health of neurons, and can transform into a special type of macrophage to protect endangered neurons?

Destruction of which of the neuroglial cell types leads to the disease multiple sclerosis (MS)?

what type of cell lines the central canal?

Which criterion is used to functionally classify neurons?

Which of the cell types shown helps determine capillary permeability?

What is the basic condition when a neuron is described as polarized?

Which glial cells have the most diversity of function?

If the highlighted structures are damaged on the right side of the spinal cord, would there be a sensory deficit on the right or the left side of the body?

Ependymal cells line many open cavities in the central nervous system (CNS). Ependymal cells have cilia on the side of the cell that face these openings. What is the most likely function of these ciliated cells?

Which of the following is true of axons?

How do neurofibrils differ from nerve fibers?

Conduction velocity in the highlighted structure is dependent on which of the following features?

Which neuroglial cell type forms the myelin sheath in the peripheral nervous system?

Which of the following is NOT one of the basic functions of the nervous system?

Cold sores on the skin of the mouth occur when herpes simplex viruses that are dormant in neural ganglia become active and travel to the skin of the mouth. Which of the following is the mechanism by which these viruses travel from the ganglia (located within the head) to the skin of the mouth?

Na+ leaks through neuron membranes faster than K+ because of the properties of the non-gated leak channels.

What ion is entering the axon terminal at A, and what effect does it have?

In a lab you are conducting tests with various chemicals and neurotransmitter receptors. You notice that exposed frog muscle cells depolarize when you add the chemical nicotine to the acetylcholine (ACh) receptors. What does this tell us about the relationship between neurotransmitters and their receptors?

In the brain, vision originates in the rods and cones in the retina. Separate regions of the brain decode basic information, like color, shapes, intensity of light, and there are other regions that decode information like position in space, and awareness of patterns. As you use your visual system, all of these regions are working simultaneously. This simultaneous awareness of all regions working at the same time is due to which processing pattern listed below?

Which of the following mechanisms is most significant in returning the ion concentrations to the resting state (from point D to point E)?

Which of the following circuit types is involved in the control of rhythmic activities such as the sleep-wake cycle, breathing, and certain motor activities (such as arm swinging when walking)?

Which of the following is NOT a type of circuit?

If the neuron membrane becomes more permeable to Na+, Na+ will transport across the membrane, causing the cell to depolarize.

If a neuron had a mutation that prevented the production of voltage-gated Na+ channels, what function would the neuron NOT be able to accomplish?

In multiple sclerosis, the cells that are the target of an autoimmune attack are the _________.

Suppose that both stimuli seen in these graphs happened equally at the same time on a postsynaptic membrane as a result of two different synapses. Which of the following best describes the result?

What component of the reflex arc determines the response to a stimulus?

Which of the following correctly states the direction followed by the specified ions when their voltage-gated channels open?

Which membrane potential occurs because of the influx of Na+ through chemically gated channels in the receptive region of a neuron

Which description of synapses is NOT correct?

Which of the following does NOT describe the process of summation?

Opening K+ or Cl- channels in a postsynaptic membrane would produce an inhibitory postsynaptic potential (IPSP).

Which of the following is NOT a difference between graded potentials and action potentials?

Which of the following is a factor that determines the rate of impulse propagation, or conduction velocity, along an axon?

Which of the following types of glial cells monitors the health of neurons, and can transform into a special type of macrophage to protect endangered neurons?

Which neuron circuit pattern is involved in the control of rhythmic activities such as breathing?

Which of the following peripheral nervous system (PNS) neuroglia form the myelin sheaths around larger nerve fibers in the PNS?

If the neuron membrane becomes more permeable to Na+, Na+ will transport across the membrane, causing the cell to depolarize.

How do neurofibrils differ from nerve fibers?

The cortical regions indicated by E are involved in what functions?

Which of the following does NOT describe conditions that occur during an action potential?

Most of the descending fibers indicated in this figure cross over (decussate) to the opposite side of the body in which of the following?

The fiber tracts indicated by the letter D will terminate in the __________.

Which is the main receptive portion of the neuron?

Bundles of neurons in the central nervous system are called tracts.

Which of the following pairings does NOT fit?

Opening K+ or Cl- channels in a postsynaptic membrane would produce an inhibitory postsynaptic potential (IPSP)