Which stage of the cell cycle immediately precedes the S phase?
A. G2
B. G1
C. M
D. None of the choices are correct.
Answer: B
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The ectoderm forms
A) muscle. B) blood. C) neural tissues. D) the lining of the digestive tract. E) the urinary system.
The __________ junction is the point at which nerve endings come in contact with muscle cells
Fill in the blank(s) with correct word
Which of the following has been directly linked to perfusion?
a. Amount of hemoglobin b. Blood pressure c. Carbon dioxide level d. Systemic vascular resistance
What is the purpose of directional and sectional terms?
A) Directional and sectional terms are used because they provide continuity between organs of humans and animals. B) Directional and sectional terms are used because they provide a standardized frame of reference for describing the human body. C) Directional and sectional terms are used because they give hints about the function of the body part. D) Directional and sectional terms are used because all organs that perform the same function have the same directional and sectional term regardless of the organism. E) Directional and sectional terms are used because they are easier to spell and pronounce than the anatomical terms.