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Answer:
Option). about 20 percent of the calcium ion required for contraction comes from outside the cell.
Explanation:
Calcium ions play an important role in cardiac muscle physiology. Calcium ions influx is responsible for plateau phase after depolarization. Calcium ions also play role in muscle contraction with the help of troponin (regulatory protein).
For contraction, about 20 percent of calcium ions are supplied from outside of the cell, while rest of the calcium ions are released from SR (sarcoplasmic reticulum).
Thus, the correct answer is 'forth option.'
It tell us the minimum heart rate for cardiovascular exercises
It shows us the heart rate that we need to achieve in order for our body to increase its metabolism above normal state, which resulted in increased calories burning.
Answer:
The correct answer from the options is E. Pulmonary hypertension
Explanation:
Pulmonary hypertension is referred to as a type of high blood pressure disease that affects the arteries in the lungs and the right side of the heart. It is characterized by shortness of breath, dizziness and chest pressure. Pulmonary hypertension arises from underlying lung disease from smoking like emphysema. Pulmonary hypertension frequently results in right ventricular hypertrophy.
The appropriate answer is A. carbohydrates. Carbohydrate is an energy rich substance found in foods such as vegetables, cereal grains and breads. Carbohydrates can be easily broken down to glucose, which is the basic unit or molecule used in the process of cellular respiration.
Foods from animals such as milk, eggs and meat are a rich source of protein. Vitamins are present in all food groups and these are essential in regulating growth and normal body functioning.
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