A newborn infant is found dead, abandoned by the road. Among the many questions that the police would like answered is whether the infant was stillborn. How could the medical examiner tell?
If the infant had been born alive, his or her first breaths would inflate the alveoli from the dense condition during fetal development. Thus, the medical examiner would focus on the lungs. If they are spongy, filled with air, it was a live birth. If not, the infant was stillborn. A simple test is to place the lungs in water. If they float, they are air-filled.
You might also like to view...
The pseudostratified columnar epithelium of the bronchi in smokers may transform into stratified squamous epithelium. This is an example of __________.
A. neoplasia B. metaplasia C. atrophy D. differentiation E. hyperplasia
Stretch-sensitive mechanoreceptors known as ________ are located in some artery walls.
A) baroreceptors B) elasticeptors C) chemoreceptors D) nociceptors
Mary accidentally ate poisonous mushrooms that contain muscarine. What would not occur?
A) constriction of the pupils B) constriction of respiratory passageways C) diarrhea D) reduction in heart rate E) feeling of euphoria and increased energy
Which of the following structures is located within the perineum?
A. dartos B. seminal vesicles C. femoral triangle D. urogenital triangle E. navel