If a person fell down the steps and then developed pain down his anterior thigh into the knee, which of the following spinal nerves was probably damaged?
A. obturator
B. femoral
C. tibial
D. common fibular (peroneal)
E. pudendal
B
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Ions are ________.
A. electrically neutral B. formed by the gain or loss of protons from the nucleus C. electrically charged D. nonpolar atoms E. not soluble in water
Genetic recombination generates diversity in what part (s) of the immune system?
a) Antigen receptors b) MHC antigen c) Hapten d) MHC antigen and antigen receptors e) Epitopes
Without the positive selection process in lymphocyte maturation ________
A) NK cells would be non-functional B) monocytes would not be able to migrate into infected tissue and differentiate into macrophages C) T-cells would not be able to properly bind to APC's and therefore not be activated by them D) autoimmune diseases would be likely to result
Explain how Ca2+ levels inside myocardial cells are altered.
What will be an ideal response?