The type of lever with the fulcrum in the middle is a ________ lever.
A. first-class
B. third-class
C. second-class
Answer: A
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During a typical immune response, activated B cells mature into cells that produce ________, which bind(s) to and attack(s) foreign invaders.
A) antigens B) perforins C) antibodies D) heparin E) complement proteins
Which of the following is true of thermoreceptors?
A) Cold receptors are three to four times more common than warm receptors. B) Cold receptors are tactile disc receptors. C) Warm and cold receptors are structurally different. D) They are located in the epidermis of the skin. E) None of the answers are correct.
The upper motor neurons of the medial pathway are located within any of the following except the
A) vestibular nuclei. B) reticular formation. C) superior colliculi. D) inferior colliculi. E) mammillary bodies.
Which type of innervation causes reduced blood flow to the digestive tract?
A. Sympathetic B. Parasympathetic