Agglutination of red blood cells means
A. they clump together.
B. they lose their nucleus.
C. they rupture.
D. they form a clot.
E. they bump into each other.
Answer: A
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What cell type is indicated by number 1?
A. Astrocyte B. Oligodendrocyte C. Ependymal cell D. Satellite cell E. Microglial cell
Matching
A) Tight junctions B) Gap junctions C) Desmosomes 31) Help prevent molecules from passing through the extracellular space between adjacent cells. 32) Type of anchoring junction. 33) Allows ions and small molecules to pass through from one cell to another. 34) Present in electrically excitable tissues. 35) Abundant in tissues subjected to great mechanical stress.
Relative to veins with similar circumferences, arteries contain more ________.
A. endothelial cells B. valves C. smooth muscle D. two of the above
Even after a forceful expiration, air still remains in the lungs for gas exchange to continue. This volume is about ________
A) 500 mL B) 1200 mL C) 2100 mL D) 4800 mL E) 6000 mL