The mass number, also known as an atomic mass number or nucleon number, refers to the total number of neutrons and protons (in a combination known as nucleons) in an atomic nucleus. It determines the atomic mass of atoms. However, while calculating the mass number, the small contribution of mass from electrons is ignored.
Mass number is equal to Number of protons + Number of neutrons
Mass number = 11 + 7 = 18.
Hence, the correct answer is 18.
Answer:
The most likely hormone released to Gina and her body deal with this dangerous and frightening situation is the adrenaline or epinephrine.
Explanation:
Adrenaline, also called <em>epinephrine</em>, is a <u>neurotransmitter</u> secreted to the bloodstream by the adrenal gland. <u><em>Under pressure or stress</em></u>, it is considered to be a survival hormone, as it <em>triggers physiological changes </em>in the body necessary to be fast or strong.
Adrenaline increases heart beating, blood pressure, stimulates breathing and dilation of the respiratory tract. It also increases glucose concentration in blood. It is responsible for the attack, defend or escape reactions.
