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Atlean Johnson

SCIENCE 221 Physiology - Weeks 1-6

QuestionAnswer
Negative feedback in a control system ______________________. Produce an action that is opposite to the change that activated the system.
Building Blocks of protein Amino Acids
Name the nitrogenous bases in RNA, and type pf sugar? Sugar - Ribose Nitrogenous Bases - adenine, uracil, guanine, cytosine
Positive feedback in a control system _________________________. Stimulatory, and amplify the change that is occurring.
Name the nitrogenous bases in DNA, and type pf sugar? Sugar - Deoxyribose Nitrogenous Bases - adenine, thymine, guanine, cytosine
What are the four distinct phases of mitosis? Prophase Metaphase Anaphase Telophase
What is bone marrow? Soft, spongy tissue that is in the medullary cavities (centers) of bones.
Explain two types of bone marrow? Red - found in virtually all bones in an infant or child's body functions to produce red blood cells Yellow - as individual ages. red marrow is replaced by yellow marrow, Marrow cells become saturated with fat and are no longer active in blood cell prod
Define the Axial skeleton? 80 bones of the hear, neck, and torso 74 upright axis of the body, and 6 tiny bones in the middle ear.
Define Appendicular skeleton? 126 bones that form the upper and lower appendages to the axial skeleton.
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