By Examining Fossil Evidence, Paleontologists Believe That Mammals Evolved from Ancestors

question 68

Multiple Choice

By examining fossil evidence, paleontologists believe that mammals evolved from ancestors of modern

• A) lobefins.
• B) sharks.
• C) reptiles.
• D) arthropods.
• E) amphibians.

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Definitions:

Meninges

The three protective membranes (dura mater, arachnoid mater, and pia mater) that cover the brain and spinal cord.

CNS

Central Nervous System, comprising the brain and spinal cord, responsible for processing information and controlling body functions.

PNS

Peripheral Nervous System, the part of the nervous system outside the brain and spinal cord that connects the CNS to organs, limbs, and skin.

Spinal Nerve Pairs

Spinal nerve pairs are pairs of nerves that emerge from the spinal cord, serving to relay information between the body and the spinal cord.