Morphine and Heroin Are ____

question 57

Multiple Choice

Morphine and heroin are ____.

• A) stimulants
• B) tranquilizers
• C) sedatives
• D) opiates

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Definitions:

Endometrium

The mucous membrane lining the interior of the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo.

Blastocyst

An early stage of embryonic development, a structure formed in the early development of mammals, consisting of a sphere of cells surrounding an inner fluid-filled cavity.

Morula

A early stage in embryonic development consisting of a solid ball of cells.

Zygote

The initial cell formed when a new organism is conceived by the union of sperm and egg cells.