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Basic muscle summation -an increase in the frequency with which a muscle is stimulated increases the strength of contraction. With increased stimuli to the heart if summation occurred the contractions would keep increasing.
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What must be present for muscle contraction to occur?
- Multiple Fibre Summation Related to the central nervous system sending signals to contract muscles. - Frequency summation Related to when action potentials sent to muscles synchronously. Check the related links below for more information.
True or false Fermentation may occur in a muscle under anaerobic conditions?
false
What are facts about heart attack?
1.5 million heart attacks occur in the United States each year. Women are more likely to die suddenly from a heart attack than men. Almost 50% of deaths from heart attack occur within one hour, outside a hospital.
Why metastasis does not occur in spleen and muscle?
Due to absense of lymph in spleen it is not affected by malignant cancer
Why are leaves important?
Leaves are needed for photosynthesis to occur.
Where does a heart attack occur in the heart?
cardio muscle
Where does the creatine phosphate system occur?
in the skeletal muscle ,heart and brain
What changes are thought to occur in the skeletal muscle to allow treppe to be observed?
This is known as wave summation. It is when the fibers of the muscles become stimulated before having a chance to relax completely.
What must be present for muscle contraction to occur?
- Multiple Fibre Summation Related to the central nervous system sending signals to contract muscles. - Frequency summation Related to when action potentials sent to muscles synchronously. Check the related links below for more information.
What are murmurs?
Those which occur during relaxation of the heart between beats are called diastolic murmurs. Those which occur during contraction of the heart muscle are called systolic murmurs
What are diastolic murmurs?
Those which occur during relaxation of the heart between beats are called diastolic murmurs. Those which occur during contraction of the heart muscle are called systolic murmurs
What is the pumping action of the heart called?
atrial and ventricular systole occur at the same time
Where does the electron transport chain of respiration occur?
This occurs in the muscle tissue of the walls of the heart.
Is heart arrhythmia a heart disease?
Is Heart Arrhythmia The Same As A Heart Attack?There not the same. A heart attack (also known as a myocardial infarction) is the death of heart muscle from the sudden blockage of a coronary artery by a blood clot. Coronary arteries are blood vessels that supply the heart muscle with blood and oxygen. Blockage of a coronary artery deprives the heart muscle of blood and oxygen, causing injury to the heart muscle. Injury to the heart muscle causes chest pain and pressure. If blood flow is not restored within 20 to 40 minutes, irreversible death of the heart muscle will begin to occur. Muscle continues to die for 6-8 hours at which time the heart attack usually is "complete." The dead heart muscle is replaced by scar tissue. The heart continues to function as the tissue dies. the heart can become arrhythmic if enough of the tissue dies, this can happen in a few minutes or a few days.A Heart arrhythmia is when the heart has already stop beating and had no pumping function.An dysrhythmia (incorrectly called an arrhythmia "a-" referring to no or not) is an irregular heartbeat. Heart rates can also be irregular. A normal heart rate is 50 to 100 beats per minute. Arrhythmia's and abnormal heart rates don't necessarily occur together. Arrhythmia can occur with a normal heart rate, or with heart rates that are slow (called bradycardia -- less than 60 beats per minute). dysrhythmia can also occur with rapid heart rates (called tachycardia -- faster than 100 beats per minute). In the United States more than 850,000 people are hospitalized for an dysrhythmia each year.
What is the most common injury or sickness caused by diphtheria?
Myocarditis (inflammation of the heart muscle) and/or temporary paralysis. Death can occur in about 10% of cases.
Why does your heart muscle beat between each beat?
Normally this would not occur. Beats between regularly spaced beats are called premature contractions and can occur with either the top or bottom chambers of the heart. This has the potential for causing an irregular heartbeat called an arrhythmia.
Three types of muscle and give an example for them?
Cardiac, skeletal, and smooth muscles.the three types of muscle in the body: cardiac (heart), skeletal (biceps, quadriceps etc.), and smooth muscle (found in the intestinal tract such as stomach and colon).
