Which medical imaging technique relies on the absorption of high-energy radiation and reveals dense tissues such as bone and teeth?
A. Positron emission tomography (PET) scan
B. Sonography
C. Computed tomography (CT) scan
D. Magnetic resonance imaging (MRI)
E. Radiography
E. Radiography
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The outer surfaces and walls of bones are composed of ________ bone.
Fill in the blank(s) with the appropriate word(s).
The acrosome of the spermatozoon
a. contains the sperm's genetic information b. contains mitochondria for energy production c. is a fructose-filled vesicle that provides energy for the spermatozoa d. contains enzymes that enable the sperm to penetrate the ovum e. contains microtubules that slide past each other to provide the sperm with motility
One function of the reticular formation is to assist in the regulation of respiration and blood pressure.
Answer the following statement true (T) or false (F)
The presence of air in the intrapleural space is known as ________
A) pneumothorax B) atelectasis C) pneumonia D) pleurisy E) wheezing