Answer:
Electromography is a test that measures the response of muscles to nerve stimuli and is the source of the signals detected by EMG electrodes. This nerve stimulus will produce a contraction in the muscle producing an action potential. The presence, size and shape of this action potential is recorded in an oscilloscope providing us with information on the responsiveness to the nerve stimulus.
Positive
A cell that is more positive and less negative is depolarized.
Once infected cells have sensed an invading pathogen, they secrete molecules called cytokines and chemokines. Cytokines such as interferons are molecules that signal neighbouring cells and induce an antiviral state in them. These cells are then primed to resist an infection with the invading virus.
1 : the act of predetermining : the state of being predetermined: such as
a : the ordaining of events beforehand
b : a fixing or settling in advance
2 : a purpose formed beforehand
Answer:
A) bind to receptors in the nucleus of their target cells.
Explanation:
Steroid hormones are synthesized from cholesterol and are lipids, therefore they cannot be transported in the blood dissolved in the plasma. They are associated with transport proteins to travel in blood.
Because they are lipids, they can diffuse through cell membranes, and once inside the target cell they bind to receptors in the cytoplasm or the nucleus and alter gene expression.
