Which statement is true about T cells?
A) They usually directly recognize antigens, which then activates a subpopulation of killer cells.
B) Their proliferation is enhanced by interleukins 1 and 2.
C) Once activated, they cannot secrete cytokines.
D) They will develop into cytotoxic T cells if antigen is complexed with class II MHC proteins.
B) Their proliferation is enhanced by interleukins 1 and 2.
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Glucose is stored in the human body as _______.
A) glucagon B) glycogen C) insulin D) plant starch
As the result of an accident, Bill suffers a dislocated jaw. This injury would involve the
A) stylohyoid ligaments. B) hyoid bone. C) condylar process of the mandible. D) alveolar process of the mandible. E) greater cornu of the hyoid bone.
Blood from the brain returns to the heart through the ________ vein
A) vertebral B) azygos C) innominate D) internal jugular E) external jugular
The laryngeal cartilage composed of elastic cartilage that prevents entry of solids or liquids into the larynx when swallowing is the
A) arytenoid cartilage. B) corniculate cartilage. C) cricoid cartilage. D) epiglottis. E) thyroid cartilage.