Exam 11: Fundamentals of the Nervous System and Nervous Tissue

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

When a sensory neuron is excited by some form of energy, the resulting graded potential is called a(n) ________.

What are the basic divisions of the peripheral nervous system?

What is the role of acetylcholinesterase?

When information is delivered within the CNS simultaneously by different parts of the neural pathway, the process is called ________ processing.

Because all action potentials are alike, how does the brain separate situations that require immediate attention from ordinary "positional" reports?

The period after an initial stimulus when a neuron is not sensitive to another stimulus is the ________.

Enkephalins and endorphins are peptides that act like morphine.

Match the following: A) Spatial summation B) Threshold stimulus C) Subthreshold stimulus D) Temporal summation -Stimulation of a postsynaptic neuron by many terminals at the same time.

Figure 11.1 Using Figure 11.1, match the following: -Which neuron would connect to a muscle?

What does the central nervous system use to determine the strength of a stimulus?

What mechanism is responsible for axonal transport?

Some neurotransmitters can be either excitatory or inhibitory depending upon the receptor.

What function is served by the increased axon diameter at the nodes of Ranvier?

Which of the following is not a function of astrocytes?

Neurons in the CNS are organized into functional groups.

Match the following: A) Absolute refractory period B) Repolarization C) Action potential D) Depolarization E) Relative refractory period -The interior of the cell becomes less negative due to an influx of sodium ions.

Match the following: A) Reverberating circuit B) Diverging circuit C) Converging circuit D) Parallel after-discharge circuit -Involved in activating fibers of a skeletal muscle such as the biceps muscle.

That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the ________ nervous system.

What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?