Which of the following cells are important to blood clotting?
Correct Answer:
D
Thrombocytes or platelets, are essential to blood clotting. Thrombocytes create platelet plugs by releasing prothrombin at an injury site that bonds with calcium to form a clot.
ABCDE is used as a guideline to detect changes in the ______.
Correct Answer:
C
ABCDE refers to irregularities in skin. A - asymmetrical shape of skin B - border unevenness C - color variations D - diameter E - evolution Any changes in the ABCDE category is cause for a referral to a dermatologist.
The main function of the epiglottis is to:
Correct Answer:
B
The epiglottis is a fold of cartilaginous tissue located above the glottis in the pharynx. During normal swallowing the larynx moves upward and the epiglottis folds over the glottis. This prevents substances from entering the respiratory system.
