The Water Vascular System of Echinoderms

question 42

Multiple Choice

The water vascular system of echinoderms

• A) functions as a circulatory system that distributes nutrients to body cells.
• B) functions in locomotion and feeding.
• C) is bilateral in organization, even though the adult animal is not bilaterally symmetrical.
• D) moves water through the animal's body during suspension feeding.
• E) is analogous to the gastrovascular cavity of flatworms.

Understand the risks and effects of combining drugs such as GHB with other substances.

Recognize the sources and methods of manufacture of various illicit drugs like ketamine.

Grasp the diversity and scale of the phenethylamine and MDMA analog families.

Comprehend the concept of drug analogs and how alterations to the molecular structure impact drug potency and receptor site binding.

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Definitions:

Blindsight

A phenomenon in which people who are perceptually blind in a certain area of their visual field demonstrate some response to visual stimuli in that area without consciously perceiving them.

Selective Attention

The process by which one focuses on one input or task while ignoring other stimuli or information.

Inattentional Blindness

A psychological lack of attention that is not associated with any vision defects or deficits, where an individual fails to perceive an unexpected stimulus that is in plain sight when other attention-demanding tasks are being performed.

Daydreaming

A mild, self-generated form of detachment from immediate surroundings, characterized by a person's drift of attention away from the task at hand.