The lower the partial pressure of oxygen in the blood and the lower the saturation of Hb with oxygen, the less carbon dioxide that can be carried by blood.
a. true
b. false
Answer: b. false
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The rubbery matrix of cartilage is secreted by ________, whereas ________ produce the fibers and ground substance that form the matrix of fibrous connective tissue.
A. adipocytes; plasma cells B. osteocytes; chondroblasts C. chondroblasts; fibroblasts D. chondroblasts; plasma cells E. mast cells; fibroblasts
The hormone ________ stimulates the conversion of glycogen to glucose.
A. glucagon B. cortisol C. insulin D. epinephrine
The most numerous type of receptor in the body is the
A. thermoreceptor. B. tactile receptor. C. nociceptor. D. photoceptor. E. chemoreceptor.
How do epithelial tissues obtain needed nutrients?
A) Blood vessels travel through all the layers of the epithelium to provide nutrients. B) Blood vessels travel through the basal layer of the epithelium to provide nutrients. C) Blood vessels travel through underlying tissues to provide nutrients. D) Epithelial tissue stores nutrients so it has a constant supply. E) Epithelial tissue does not nutrients because it is not living tissue.