Exam 12: Nervous Tissue

Neurons that have one axon and one dendrite, with the soma in between, are called

During repolarization of a neuron

________ line the brain ventricles and spinal canal.

________ are the most numerous type of neuron in the CNS.

The ________ division of the nervous system carries motor commands to muscles and glands.

The ________ principle states that the size and speed of the action potential are independent of the stimulus strength.

Which of the following is true about threshold for an action potential?

Sensory neurons of the PNS are

The presence of ________ dramatically increases the speed at which an action potential moves along an axon.

Sensory information from skeletal muscles travels over ________ fibers.

Which type of synapse is most common in the nervous system?

Which of the following is not a function of astrocytes?

In-Text Figure Based Questions -The axon hillock is a region between what two general regions of a neuron? (Figure 12-2)

Figure 12-2 The Nerve Action Potential Use Figure 12-2 to answer the following questions: -Which area of the graph shows when membrane potential approaches the potassium equilibrium potential?

Type ________ fibers have the largest diameter axons.

Small, wandering cells that engulf cell debris and pathogens in the CNS are called

Which of the following is not involved in creating the resting membrane potential of a neuron?

When pressure is applied to neural tissue, all of the following effects are possible except

Ions can move across the plasma membrane in which of the following ways?

Figure 12-1 The Neuron Use Figure 12-1 to answer the following questions: -Identify the structure labeled "4."