What is the correct dental formula for an adult human?
A. 2103 / 2103
B. 2123 / 2123
C. 2133 / 2133
D. 2122 / 2122
Answer: Option B
Solution (By JKExamLibrary)
The dental formula represents the number of each type of tooth in one half of the upper and lower jaws. For an adult human, it is 2123 / 2123. This means: 2 Incisors, 1 Canine, 2 Premolars, and 3 Molars in each quadrant (upper right, upper left, lower right, lower left), totaling 32 teeth.
Explanation:
Thermoregulation uses negative feedback mechanisms: when body temperature rises, sweating and vasodilation cool the body; when it falls, shivering and vasoconstriction generate and conserve heat. Negative feedback counteracts deviations from a set point. Positive feedback amplifies a change (e.g., labor contractions).
Explanation:
In the S (synthesis) phase of interphase, DNA is replicated. G2 is preparation for mitosis. Interphase is the longest. Cytokinesis follows telophase.
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