A graded response occurs when ________.
A. multiple muscles in a group are activated
B. an individual muscle cell undergoes an all-or-none response
C. multiple motor units are activated
D. None of the choices are correct.
Answer: C
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The abnormal condition of air in the pleural cavity is known as:
a. pleurisy b. lung cancer c. pneumothorax d. pulmonary edema e. congestive failure
Each individual ____ is composed of the cuticle, the cortex, and the medulla
a. hair b. arrector pili c. skin d. nail
Chromosome pairs are called ________.
A. haploid B. loci C. genomes D. homologous pairs E. karyotypes
Along with the ribs and sternum, what other bones make up the thoracic cage?
A) 7 cervical vertebrae B) 12 thoracic vertebrae C) 5 lumbar vertebrae D) 7 cervical and 12 thoracic vertebrae E) 12 thoracic and 5 lumbar vertebrae