Areas of the spleen that contain large aggregations of lymphocytes are known as
A) Peyer's patches.
B) adenoids.
C) white pulp.
D) red pulp.
E) lymph nodes.
Answer: C
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Which of the following is incorrect pertaining to the apex of the heart?
A) It is formed by the inferolateral part of the left ventricle. B) Typically it lies posterior to the left 5th intercostal space in adults. C) It underlies the site where the "heartbeat" may be auscultated on the thoracic wall. D) It is where the sounds of the mitral valve closure are maximal (apex beat). E) It is bisected by the coronary groove.
The primary absorption of nutrients, water, and electrolytes takes place in the large intestine, converting chyme to fecal material
Indicate whether the statement is true or false
What structure prevents the backflow of lymph in some lymphatic vessels?
A) lacteals B) lymph nodes C) valves D) tight junctions E) desmosomes
According to the rules of complementary base pairing, a nucleotide containing the base cytosine would only pair with a nucleotide containing the base
A) thymine. B) adenine. C) uracil. D) cytosine. E) guanine.