The lens is a separate part of the eye. Rods, cones and fovea are all in the retina.
Answer: when you have sex then you would probably be expecting a baby because that is how we are created it is our reproductive system...
Explanation:
The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Tooth decay and gum disease can lead to serious health problems, including brain or heart infections. A growing number of older adults have something to smile about: research shows they're keeping their teeth longer.
Answer: The specific of the physical examination is 0.68
Explanation: Specificity is based on the individuals that does not show any sign of the disease when weighed using the medical criterion or gold standard.
Specificity is calculated as the number of persons that are not infected and does not show any sign of the disease divided by the total number of persons that does not show any sign of the disease.
From the Analysis 516 persons doesn't show any sign of the disease when weighed with the medical criterion or gold standard. That means our main concentration is on the 516 person.
Among the 516 person's 165 persons were positive of the disease when diagnosed.
Therefore the number of persons that are not infected is 516 - 165 = 351.
Therefore;
Specificity = 351 ÷ 516 = 0.68
This means that the medical criterion for physical examinations of people that are infected by the disease is not a perfect means of determining people with the infection.
