Which of the following may be used in PET scans as biological tracers that can be followed through the body?
A) nucleic acids
B) proteins
C) electrons
D) ions
E) radioisotopes
E
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What type of epithelium is uncommon and is found in the ducts of certain sweat glands?
A) stratified columnar epithelium B) stratified squamous epithelium C) stratified cuboidal epithelium D) pseudostratified ciliated columnar
Spongy bone tissue
A. has many spaces and lacks osteocytes. B. is the primary component of compact bone. C. contains concentric lamellae. D. contains interconnecting plates called trabeculae. E. is very dense.
The brain's association of activation of a receptor with the perception of a particular sensation is called ________.
Fill in the blank(s) with the appropriate word(s).
Which skin condition is a type of autoimmune disease that results in excess connective tissue in the skin and various organs?
A. Cancer B. Hives C. Decubitus ulcers D. Scleroderma