The term adequate stimulus refers to the intensity of a stimulus developing above a threshold value
Indicate whether the statement is true or false
F
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A tooth root attached to a jawbone by a periodontal ligament is a ________.
A. gomphosis B. synchondrosis C. synovial joint D. syndesmosis
Which of the choices below explains why the arterioles are known as resistance vessels?
A) The contraction and relaxation of the smooth muscle in their walls can change their diameter. B) They contain a large quantity of elastic tissue. C) They distribute blood to various parts of the body. D) Their prime function is the exchange of nutrients and wastes between the blood and tissue cells.
Substances that combine the hydrogen ions are called _____________.
Fill in the blank(s) with the appropriate word(s).
Answer the following questions true (T) or false (F)
1. Serous fluid lubricates around organs and reduces friction as the organ moves against adjacent structures. 2. Negative feedback loops produce responses in the opposite direction of the initial stimulus while positive feedback loops produce responses in the same direction of the initial stimulus. 3. According to the principle of complementarity of structure and function, structure and function are related only at the cellular level.