A mature red blood cell lacks a nucleus; therefore, it
A) can repair itself readily.
B) is malformed.
C) can only divide once more.
D) will be a long-lived cell.
E) cannot make new proteins and will be worn out within a few months.
E
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The preganglionic axons of CN VII extend to the
A. pterygopalatine ganglion. B. submandibular ganglion. C. otic ganglion. D. pterygopalatine, submandibular, and otic ganglia. E. pterygopalatine and submandibular ganglia.
Which region includes B cells, follicular dendritic cells and macrophages?
a) B b) C c) D d) E e) F
Which muscles attached to the hair follicles cause goose bumps?
A) arrector integument B) arrector pili C) levator folliculi D) arrector folliculi
Thrombin:
1.is produced from prothrombin. 2.is capable of enhancing its own production. 3.stimulates the conversion of fibrinogen to fibrin. 4.All of these are correct.