Select the correct statement about veins
a. Their walls are highly muscular.
b. Their walls consist of one layer of cells.
c. There are only about 40 large ones in the body.
d. They serve as a blood reservoir.
e. They transport blood away from the heart.
D
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Nociceptors are responsible for the perception of
A) itch only. B) pain only. C) pain and itch. D) skin stretch only. E) pain and skin stretch.
Which of the following most accurately describes how foreign substances can activate complement?
A. Antibodies can bind to foreign antigens and activate complement through the classical pathway. B. Foreign substances can bind to spontaneously activated C3 and stabilize it. C. Foreign proteins bind to C1 and activate it. D. Foreign proteins are phagocytized by macrophages and directly activate complement. E. Antibodies can bind to foreign antigens and activate complement through the classical pathway and foreign substances can bind to spontaneously activated C3 and stabilize it.
Which four elements comprise approximately 96% of our body weight?
A. carbon, oxygen, iron, and potassium B. carbon, oxygen, hydrogen, and nitrogen. C. carbon, oxygen, hydrogen, and potassium. D. carbon, oxygen, potassium, and sodium.
The epithelial lining of the oropharynx and the superior larynx (vocal cords) is nonkeratinized stratified squamous.
Answer the following statement true (T) or false (F)