Which structure allows the action potential to travel deep into the interior of the cell to each contractile organelle?
A) Myofibril
B) T-tubule
C) Sarcolemma
D) Sarcoplasm
Answer: B
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Which is not true about spermatogenesis?
A. The process includes two meiotic divisions. B. The final stage of the process is called spermiogenesis. C. Mature spermatozoa are haploid (n=23). D. Spermatogenesis begins at birth and continues throughout a man's life. E. The process takes place in the walls of the seminiferous tubules.
When two or more graded potentials arrive at the trigger zone within a short period of time, their effects are additive and ________ occurs.
Fill in the blank(s) with the appropriate word(s).
The flexor muscles in the anterior arm (biceps brachii and brachialis) are innervated by what nerve?
A) radial B) median C) ulnar D) musculocutaneous
The epiglottis is a malignant tumor, which sometimes grows in the throat
Indicate whether the statement is true or false