A blood clot attached to the inner surface of a blood vessel is called a
A) embolus.
B) plaque.
C) thrombus.
D) platelet plug.
E) fibrin mesh.
C
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Allergens differ from antigens because ________
A) allergens are primarily plant derived while antigens are bacterial or viral in nature B) allergens are only active seasonally and are generally harmless to the body C) allergens do not involve the leucocytes, they simply stimulate the inflammatory response D) allergens produce an abnormally large immune response to what is an otherwise harmless particle
Pupil diameter would be increased by contraction of the ________.
A. radial muscles B. superior rectus muscle C. circular muscles D. ciliary body
Brain activity is decreased during sleep. In fact, the brainstem typically shows no activity at all.
Answer the following statement true (T) or false (F)
Which of the following is not true of mitochondria?
a. Make protein for the cell b. Are the site of cellular respiration c. Are composed of two membranous sacs, one inside the other d. Contain DNA