When an electrical impulse reaches the end of a nerve cell, the nerve cell releases the neurotransmitter __________ , and that begins the contraction of a muscle fiber.

Fill in the blank(s) with correct word


Ans: acetylcholine

Anatomy & Physiology

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Briefly describe the events leading to the implantation of the blastocyst in the uterus, including how it is nourished

What will be an ideal response

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Not counting sesamoid bones, what is the total number of tarsals, metatarsals, and phalanges in a single ankle and foot?

A. 32 B. 24 C. 26 D. 30 E. 27

Anatomy & Physiology

Which of the following is NOT reabsorbed in the nephron loop?

sodium bicarbonate chloride water

Anatomy & Physiology

What molecule in the nucleus contains instructions for making proteins?

A) histone molecules B) DNA C) RNA D) ATP E) enzymes

Anatomy & Physiology