The SA Node is the heart's normal pacemaker. When the SA Node depolarizes, electrical signal spreads through the atrial muscle causing contraction.
Explanation:
Inherent rhythmicity / automaticity - The property of the pacemaker cells of the heart to start electrical sequence of depolarization and repolarization.
SA Node or Sino-atrial Node generates the electrical signal.
The electrical signal passes through internodal pathways, atrial fibres, atrioventricular node (AV Node), the bundle of His, Purkinje fibres, right bundle branch, left bundle branch.
Systole - Contraction of cells when the electrical signal of depolarization reaches the contractile cells.
Diastole - Relaxation of cells when the electrical signal of repolarization reaches the myocardial cells.
C should be the answer because in that example he is not prepared nor is his flexible easily flexible by him being out at the movies on a weekend that he is on call. It shows the importance of needing to be flexible and easily adaptable in case of emergency.
Answer: No.
Explanation:
Studying about diseases, their effect, cause and the prevention of diseases is known as Epidemiology, and the scientists that studies Epidermiology and take it as a professsion are called Epidermiologists.
From the question; assuming the epidemiologist who finds a correlation between the use of tanning beds and melanoma (an aggressive form of skin cancer) in college-age women, the Epidermiologist can NOT conclude that tanning beds cause skin cancer BECAUSE the fact that the the use of tanning beds CORRELATE with melanoma (an aggressive form of skin cancer) in college-age women does not PROOF THAT tanning beds cause skin cancer.
===>That is, the fact that something correlate with another thing does not make it the cause.
She will have 65 jars left when all the boxes are full
<h3>Further explanation
</h3>
Algebraic expressions in mathematics are a combination of coefficients, numbers, variables, constants and arithmetic operations such as addition, subtraction, multiplication, and division
12 jars = 1 box
The number of jars that the boxes can hold :
Because there are 665 jars, there are still jars that cannot be entered in the box,
The leading cause of deaths in the united sates are heart diseases followed by cancer.
As per the latest researches about 30.2 million people in the United States suffer from heart diseases like heart attack, faulty heart valves, atherosclerosis, heart failure, hypertension, arteriosclerosis etc. And this number keeps on rising every year making it accountable for one in every four deaths caused in the country followed by cancer.
The common causes may include higher blood pressure, more cholesterol levels in the blood, obesity, smoking, alcoholism, tobacco consumption etc. Cancer is another leading cause affecting nearly 5.3 percent of the population making United States one of the most effected country by the disease.
To know more about Cancer refer to the link below
brainly.com/question/373177
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