The end of the plateau phase is due to the ________ of Ca2+ channels and ________ of K+ channels.

A) opening, closing
B) opening, opening
C) closing, closing
D) closing, opening


D) closing, opening

Anatomy & Physiology

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Which of the following is the part of the blastocyst that promotes implantation and produces hCG?

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In these views of the trachea, what structure does number 1 indicate?

A. Annular ligament B. Trachealis muscle C. Cricoid cartilage D. Thyroid cartilage E. Tracheal cartilage

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What is the correct sequence of the journey for mature sperm?

A. Ejaculatory duct - prostatic urethra - epididymis - ductus deferens - penile urethra - vagina - uterus - uterine tube B. Epididymis - ductus deferens - ejaculatory duct - prostatic urethra - penile urethra - uterine tube - vagina - uterus C. Epididymis - ductus deferens - ejaculatory duct - prostatic urethra - penile urethra - vagina - uterus - uterine tube D. Epididymis - ductus deferens - prostatic urethra - ejaculatory duct - penile urethra - vagina - uterus - uterine tube

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Which of the following muscles is most active when rowing a boat?

A. Teres major B. Pectoralis major C. Deltoid D. Latissimus dorsi E. Biceps brachii

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