Lymphoid tissues include ____________.
A) bone marrow.
B) thymus.
C) spleen.
D) lymph nodes.
E) All of the answers are correct.
E) All of the answers are correct.
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The pericardium is composed of
a. muscle tissue b. columnar epithelial tissue c. serous membrane d. fibrous connective tissue
Hemoglobin
a. combines preferentially with O2 over any other substance. b. when combined with carbon dioxide is known as carboxyhemoglobin. c. plays a critical role in determining the amount of O2 that is exchanged between alveoli and blood, because it acts as a storage depot, removing dissolved O2 from the blood thereby keeping PO2 low and allowing net diffusion of O2 to continue until the hemoglobin is completely saturated. d. both (a) and (b) above. e. all of these answers
The skin condition called ______ is caused by parasitic lice.
Fill in the blank(s) with the appropriate word(s).
As CSF circulates, ________ between it and the interstitial fluid of the CNS is unrestricted between and across the ependymal cells
A) osmosis B) perfusion C) diffusion D) convection E) conduction