Each thick filament contains about ________ protein molecules (each molecule has two heads and two braided tails).
A. 2000
B. 200
C. 2
D. 20
Answer: B
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A. Carina B. Anular ligament C. Goblet cell D. Pseudostratified ciliated columnar epithelium E. Trachealis muscle
The ____________________ division of the peripheral nervous system carries information to the CNS. Instructions from the CNS are transmitted via the ____________________ division of the peripheral nervous system to the ____________________ organs
Fill in the blank(s) with correct word
The spermatogenic cells that line the seminiferous tubules produce sperm.
Answer the following statement true (T) or false (F)
Which layer of a blood vessel contains smooth muscle and elastic fibers?
A) tunica intima B) tunica externa C) endothelium D) tunica media