Examlex
Which of the following is a procedure that measures the density of bone?
Desmosomes
Specialized cell structures that function in cell adhesion, anchoring cells to each other within tissues.
Peristalsis
The sequential muscular contractions that move food along the digestive tract.
Pupil
The black circular opening in the center of the iris of the eye, which varies in size to regulate the amount of light reaching the retina.
"Goose Bumps"
"Goose bumps" occur when tiny muscles at the base of each hair, known as arrector pili muscles, contract and cause the hair to stand up, a reaction to cold or strong emotions.
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