Which of the following neurotransmitters acts as an excitatory transmitter in the skeletal muscles but functions as an inhibitory transmitter in the heart muscle?
A. Norepinephrine
B. Epinephrine
C. Acetylcholine
D. Serotonin
Answer: C
Health & Biomechanics
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The main skin pigment, melanin, is interspersed among other cells in the _____
A) dermis B) epidermis C) subcutaneous D) subdermis
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The most prevalent degenerative diseases in the United States are those of the _____ system.
A. cardiorespiratory B. cardiovascular C. cardiovascular D. endocrine E. renal
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Which of the following is the most essential nutrient?
A. Protein B. Fiber C. Fat D. Water
Health & Biomechanics
Identify four types of bullying and give an example of each
What will be an ideal response?
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