IgA is primarily found
A. in blood.
B. in external secretions such as tears, saliva, and mucus.
C. in lymph.
D. on the surface of B-lymphocytes.
E. in the thymus, spleen, and lymph nodes.
B
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In this image showing connective tissue components, what structure does number 2 indicate?
A. Mesenchymal cell B. Fibroblast C. Adipocyte D. Macrophage E. Extracellular matrix
Regardless of type, all levers follow the same basic principle:
effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage. Indicate whether the statement is true or false
Epinephrine does not
a. cause constriction of the respiratory airways b. elevate the concentration of blood sugar c. stimulate glycogenolysis in skeletal muscles d. stimulate hepatic gluconeogenesis e. stimulate hepatic glycogenesis
Exercise ________ and ________ bones.
A. thickens; strengthens B. thickens; elongates C. thins; atrophies D. elongates; weakens