How does histamine contribute to the inflammatory response?
A) It makes capillaries less leaky.
B) It attracts macrophages to the site of infection.
C) It decreases blood flow to the injured area.
D) It increases warmth at the site of infection.
E) It causes fever.
D
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How does the amount of yolk relate to the nourishment of the organism?
a. An egg with a small amount of yolk contains all of the nutrients for the embryo's development. b. An egg with a large amount of yolk contains all of the nutrients for the embryo's development. c. An egg lacking yolk contains all of the nutrients for the embryo's development. d. There is no relationship between the amount of yolk and the nourishment of the organism. e. All animals have the same amount of yolk and provide the same amount of nourishment.
Which of the following regarding the haversian system is false?
A. Haversian canals may contain nerve fibers. B. Haversian canals run parallel to the length of long bone. C. It keeps osteocytes alive. D. Haversian canals are created by osteoclasts that tunnel through the bone matrix.
Hormones are distributed throughout the body
by the ____ system. a. exocrine b. lymphatic c. nervous d. circulatory e. integumentary
The sigma subunit of RNA polymerase functions to
a. form RNA polymerase–DNA complexes. b. locate, recognize, and bind to promoter regions. c. terminate mRNA synthesis of genes at their stop sites. d. do both a and b.