Bio125~Chapter 11

Region of the brain that coordinates antagonistic muscle movement?

Cerebellum in the hindbrain

The left and right sides of the cerebrum are interconnected by the?

Corpus callosum

Excitatory neurotransmitters Encourage the generation of new electrical impulses by stimulating?

Do you polarization of the post synaptic cell, causing a threshold to be approached or exceeded

From an evolutionary standpoint, this structure is considered the oldest, most primitive division of the brain?

Hindbrain

The three main anatomical and functional divisions of the brain are the?

Hindbrain, midbrain, and forebrain

Regulation of the production of breast milk, carbohydrate metabolism, and temperature control are some of the functions of the?

Hypothalamus

During this process, influx of what causes the vesicles in the axon ball to fuse with the cell membrane, releasing him what?

Positive ions, sodium

During what phase of an action potential do the sodium channels clothes and potassium channels open, releasing potassium from the neuron?

Repolarization

What occurs during the absolute refractive period to a neuron?

Sodium channels close, and potassium moves out of the axon

Amyotrophic lateral sclerosis (ALS) is A disease that results from nerve damage in the?

Spinal cord and brain

Preganglionic motor neurons of the what division of the nervous system originate in the thoracic or lumbar region of the spinal cord?

Sympathetic

The central nervous system is composed of?

The brain and the spinal cord

The central nervous system is enclosed by a membranes or meninges called the?

The dura mater, the arachnoid, and the pia mater

The reticular formation is associated with?

The midbrain

During a brain surgery, the surgeon passes an instrument through the dura matter. What part does he passed through next?

The arachnoid

Saltatory condition is?

A form of a rapid transmission of nerve impulses along a myelinated fibers, in which the nerve impulse leaves from node to node

During repolarization of a neuron what happens?

Action potentials always travel in one direction only

Insignificant production of acetylcholine in the synapses of the brain, abnormal tangled neurons, and large deposits of beta amyloid are problems associated with what disease?

Alzheimer's disease

Axon branches into axon terminal's, which have what located at the terminal ends?

Axon bulb

Oligodendrocytes are similar to Schwann cells in that they are a?

Neuroglia cell

Cells that provide direct protection and physical support to neurons are?

Neuroglia cells

Electrical impulses are transmitted between components of the central nervous system via?

Neurons