Normal Blood Is Composed of All the Following Components Except

question 26

Multiple Choice

Normal blood is composed of all the following components except

• A) platelets.
• B) plasma.
• C) arterioles.
• D) white blood cells.
• E) red blood cells.

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Definitions:

Refractory Periods

The time period immediately following an action potential during which a neuron is unable to fire another impulse.

Phrenology

A now-discredited theory which postulated that bumps on the skull could predict mental traits and character.

Myelin Sheath

A fatty tissue layer segmentally encasing the axons of some neurons; enables vastly greater transmission speed as neural impulses hop from one node to the next.

Synaptic Gaps

The tiny spaces between neurons, across which neurotransmitters travel to transmit messages from one neuron to another.