If blood calcium levels rise above 11mg/dL which hormone is likely to be activated?

A) parathyroid hormone
B) estrogen
C) calcitonin
D) calcitriol
E) both calcitriol and parathyroid hormone


C

Anatomy & Physiology

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In order to stimulate skeletal muscle fibers, motor neurons release the neurotransmitter ________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

During the resting state of a voltage-gated Na+ channel,

1. the inactivation gate is open. 2. the activation gate is closed. 3. the channel is permeable to Na+. a) 1 only b) 2 only c) 3 only d) both 1 and 2 are true. e) all of these choices are true.

Anatomy & Physiology

Which of the following is not true of triglycerides?

a. A part of the molecule attracts water. b. The molecule contains three fatty acids. c. The molecule contains glycerol. d. Triglycerides are used by the body to store energy.

Anatomy & Physiology

Channel proteins

A. provide a tunnel through which ions or molecules can enter or leave the cell. B. are binding sites for other molecules. C. utilize the G protein complex to function. D. are found only on endoplasmic reticulum. E. allow cells to recognize one another.

Anatomy & Physiology