The Cone-Shaped Structure at the Junction Between the Cell Body

question 53

Multiple Choice

The cone-shaped structure at the junction between the cell body and axon of a multipolar neuron is the

• A) node of Ranvier.
• B) dendrite.
• C) axon hillock.
• D) Golgi complex.
• E) mitochondrian.

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Definitions:

Umbilical Cord

The cord connecting the placenta and fetus, through which nutrients pass.

Fetus

The developing human from roughly eight weeks after conception to birth, during which major structures and organs develop.

Alpha-Fetoprotein

A protein produced by the liver of a developing fetus, levels of which are tested during pregnancy as a marker for certain conditions.

Neural Tube Defect Screening

A test on a pregnant woman’s blood during the second trimester to measure the level of alpha-fetoprotein; test results reveal possible defects of the spine, spinal cord, skull, and brain.