Exam 11: Fundamentals of the Nervous System and Nervous Tissue

The part of a neuron that conducts impulses away from its cell body is called a(n) ________.

Match the following: A) Trigger zone B) Receptive region C) Conducting region D) Secretory region E) Secretory zone -Area where nerve impulse is generated.

Figure 11.1 Using Figure 11.1, match the following: -In a reflex arc, which neuron has its cell body inside the spinal cord?

In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environment? The interior is ________.

Match the following: A) Reverberating circuit B) Diverging circuit C) Converging circuit D) Parallel after-discharge circuit -Different types of sensory input can have the same ultimate effect.

A stimulus traveling toward a synapse appears to open calcium ion channels at the presynaptic end, which in turn promotes fusion of synaptic vesicles to the axonal membrane.

Axon diameter and degree of myelination determine nerve impulse conduction velocity.

A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons.

Which of the following is not a chemical class of neurotransmitters?

Match the following: A) Trigger zone B) Receptive region C) Conducting region D) Secretory region E) Secretory zone -Plasma membrane exhibits voltage-gated Na⁺ and K⁺ channels.

Figure 11.1 Using Figure 11.1, match the following: -Which neuron is a sensory neuron found in a reflex arc?

A neuron that has as its primary function the job of connecting other neurons is called a(n) ________.

Match the following: A) Trigger zone B) Receptive region C) Conducting region D) Secretory region E) Secretory zone -Plasma membrane exhibits voltage-gated Ca²⁺ channels.

Which of the following is not a function of the autonomic nervous system?

Bipolar neurons are commonly ________.

Which of the following is False or incorrect?

During depolarization, the inside of the neuron's membrane becomes less negative.

A patient is admitted to the hospital with exacerbation of multiple sclerosis (MS). She asks the nurse, "Why did this have to happen to me again? I was doing so well." Explain why some forms of MS are characterized by periods of remission and exacerbation.

Figure 11.2 Using Figure 11.2, match the following: -Ion channel.

Match the following: A) Spatial summation B) Threshold stimulus C) Subthreshold stimulus D) Temporal summation -Any stimulus below this intensity will result in no response in a neuron.