Why, if 99% of the calcium in the body is in bones and teeth, are there such elaborate mechanisms to regulate the 1% of calcium that is in the blood?
Calcium not associated with skeletal mass is critical for life. Calcium cooperates with vitamin K to stimulate blood clotting, and is necessary for muscle contraction and transmission of nerve impulses. Calcium is needed for healthy vision, regulation of blood glucose, and cell differentiation. It is a cofactor for several enzymes needed for energy metabolism.
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________ stretching may activate the stretch re?ex and cause injury to muscles and tendons
A) Ballistic B) Dynamic C) Antagonistic D) Static
What type of laxative may cause laxative dependence?
a. Fiber b. Osmotic, nonabsorbable salts c. Osmotic, nonabsorbable sugars d. Stimulant
Which of the following is a factor that contributes to global food insecurity?
A) Global warming B) Urbanization C) Privatization D) Population decline
According to the Physical Activity Guidelines for Americans, adults should do at least 150 minutes a week of moderate-intensity physical activity
Indicate whether the statement is true or false