Diseases that affect the ability of skeletal muscle to contract are considered life threatening because
A. movement of food through the digestive tract depends on skeletal muscle contractions.
B. the movement of blood through the blood vessels of the body depends solely on skeletal muscle contractions.
C. respiratory movements depend on skeletal muscle contractions.
D. All of the choices are correct.
Answer: C
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The use of the term "origin" to describe a muscle attachment that doesn't move during contraction is misleading.
Answer the following statement true (T) or false (F)
Gustatory receptors are sensitive to dissolved chemicals but insensitive to light. This is due to
A) receptor specificity. B) accessory cells. C) the fact that they are interoceptors. D) receptor potentials. E) both accessory cells and the fact that they are interoceptors.
Which of the following is NOT one of the three layers of tissue that forms the eyeball?
A. Conjunctiva B. Sclera C. Choroid D. Retina
Why might someone want to take erythropoietin in a non-medical situation?
A) to increase muscle mass B) to sleep C) to increase oxygen-carrying capacity and increase stamina D) to increase the chance of getting pregnant E) to increase sex drive