In most of the cells in the body there is an electrical difference such that the inside of cells is positive with respect to the outside.
Answer the following statement true (T) or false (F)
False
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A lack of intrinsic factor, leading to a deficiency of vitamin B12 and causing an appearance of large pale cells called macrocytes, is characteristic of ________
A) polycythemia B) sickle-cell anemia C) aplastic anemia D) pernicious anemia
According to Fick's law of diffusion, which of the following changes would decrease the rate of net diffusion of a substance across a membrane?
a. an increase in the substance's concentration gradient b. an increase in the permeability of the membrane to the substance c. an increase in the surface area of the membrane d. an increase in the thickness of the membrane e. none of these answers.
The _________________ _________________ consists of a descending limb and an ascending limb.
Fill in the blank(s) with the appropriate word(s).
The medial and lateral motor pathways can modify, or direct, skeletal muscle contractions by ________ lower motor neurons
A) stimulating B) facilitating C) inhibiting D) controlling E) All of the answers are correct.