The Number of Pairs of Spinal Nerves-Cervical, Thoracic, Lumbar, Sacral

question 255

Multiple Choice

The number of pairs of spinal nerves-cervical, thoracic, lumbar, sacral, and coccygeal-in order, are:

• A)7, 12, 5, 5, 1
• B)7, 7, 5, 5, 2
• C)8, 12, 4, 4, 1
• D)8, 12, 5, 5, 1

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Definitions:

Spontaneously Aborted

A term used in medical contexts to describe a miscarriage that occurs naturally without medical intervention.

Prenatal Environmental Influences

Factors in the environment affecting the development of an embryo or fetus before birth, including nutrition, stress, and exposure to toxins.

Zygote

The initial cell formed when a new organism is produced by sexual reproduction, resulting from the fusion of two gametes.

Gestation

The period of development within the womb from conception until birth in mammals.