Pikaia Was a Swimming Chordate Whose Fossils Are Found in the

question 18

Multiple Choice

Pikaia was a swimming chordate whose fossils are found in the

• A) Tommotian fauna.
• B) Burgess Shale.
• C) Rocky Mountains of Colorado.
• D) new fossil sites of China.

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Definitions:

Pelvic Nerves

Nerves located in the pelvis that innervate the lower abdomen, genitals, and parts of the lower back and legs.

Urinary Bladder

A hollow muscular organ in humans and some other animals that collects and stores urine from the kidneys before disposal by urination.

Parasympathetic Axons

Nerve fibers that are part of the parasympathetic nervous system, responsible for transmitting impulses to organs and glands to support rest and digest functions.

Facial Nerve

The facial nerve, also known as cranial nerve VII, is responsible for controlling the muscles of facial expression, taste sensations from the anterior two-thirds of the tongue, and other functions.