Production of erythropoietin by the kidneys is an example of the urinary system's homeostatic
interaction with which system?
a. skeletal
b. cardiovascular
c. digestive
d. endocrine
e. reproductive
D
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Teeth aren’t exactly bones, but they’re made up of similar tissues and are subject to the same problems bones may have. In what way(s) do you predict the disease rickets might affect teeth?
_____ Periodontal disease: Redness and swelling elicited by bacterial infection of the gums. _____ Delayed formation: The baby teeth may not erupt until after one year. When they erupt, they may be smaller than normal. _____ Increased likelihood of cavities: Low vitamin C status prevents sufficient mineralization, allowing infection to establish on the teeth. _____ Canker sores: Painful mouth sores associated with bacteria and/or viruses.
Secretion takes up unwanted substances that have been transported out of
a. peritubular capillaries. b. collecting ducts. c. papillary ducts. d. glomeruli. e. Bowman's capsule.
The A, P, and E sites are progressively occupied by amino acids being assembled into a polypeptide. These sites are part of
A. tRNA. B. the large ribosomal subunit. C. the spliceosome. D. mRNA. E. DNA.
Which of the following is not considered a basic tissue type?
A. connective B. epithelial C. nervous D. muscle E. fat