Answer: B
Explanation:
After a muscle fiber is stimulated by a nerve signal, a release of stored calcium ions leads to muscle contraction.
Common electrolytes include sodium, chloride, magnesium, calcium and potassium.
Sodium and potassium help in the generation of nerve impulses while calcium aids muscle contraction. Sodium is also actively involved in the movement across cell membranes.
Answer:
For question one: authoritative
Explanation:
Answer:
carbon dioxide passes from the blood into the alveoli and is then exhaled. Oxygenated blood travels from the lungs through the pulmonary veins and the cycle goes on every time you breath or inhale you inhale oxygen into your blood cells.
Explanation:
Answer:
0, 1, and 6 months.
Explanation:
The exclusive hepatitis B vaccine is given as a single dose to babies at birth. However, hepatitis B immunization continues through pentavalent vaccination at 2, 4 and 6 months of age. People who were not vaccinated against hepatitis B during the first months of life may receive immunization at any time in adulthood, on a 3-dose schedule and following a recommended application schedule of 0, 1, and 6 months.
Answer:
silver mines were built during that period
Explanation:
