why does the muscle not constantly shorten and lengthen as crossbridges bind and unbind during a muscle contraction? in other words, why is muscle contraction smooth?

Answers

Answer 1

Answer:

Crossbridges form and break at the same time, but cycling occurs rapidly so the muscle does not have time to relax.

Explanation:

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Answer 2

The shortening of muscle length in order to complete the action is called contraction.

The muscle contraction is smooth because the muscle will relax first after the contraction for the next cycle.

There are two types of action in a muscle that is:-

ContractionRelaxation.

In the question, the muscle has some light and dark bands which overlap each other in the contraction periods. These bands can not overlap each other as the muscle can not do other actions until the previous action has been done. The muscle will relax first and bands with removed from each other and then it repeats the cycle.

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Related Questions

a person with a somatic symptom disorder experiences

Answers

Answer:

A person with somatic symptom disorder experiences pain, weakness or shortness of breath.

Also has excessive thoughts, feelings and behaviors relating to the physical symptoms.

Explanation:

which part of the ethmoid bone forms part of the nasal septum?

Answers

Answer: Perpendicular plate. This part of the bone forms the superior (top or above) part of the nasal septum.

Omega-3 fatty acids found in fish may reduce the risk for heart disease and play a role
in vision
O True
False

Answers

I think the correct answer is true!

what is virus corona?

Answers

Answer:

Corona Virus

Explanation:

Look it up

Beginners should work within what percentage of their main heart rate?

60 to 70 percent of your MHR

50 to 60 percent of your MHR

70 to 90 percent of your MHR

40 to 60 percent of your MHR​

Answers

60 to 70 percent of your MHR

Answer:

60-70

Explanatio

internet

how might lung volumes and capacities be altered in a 74-year-old woman who struggles with breathlessness?

Answers

Lung volumes and capacities can be altered in a 74-year-old woman who struggles with breathlessness because her alveoli have been destroyed over time.

Lung volumes and lung capacities measure the amount of air in the lungs. Volume is the quantity of air used for one activity (e.g breathing or expiration), whereas capacity is the sum of more than one volume (i.e. the maximum amount of air that can be breathed in from expiration).

The fundamental issue for this woman is that her alveoli have been destroyed over time, resulting in areas of the lungs where the air is trapped.

This entrapment is increased by airway obstruction, which is most noticeable during expiration(breathing out from lungs).

As a result, her residual volume has increased significantly. The retained air has enlarged the lungs, increasing the task of breathing substantially. This greater work of breathing leads to her sense of being out of breath.

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Waste are materials produced by human activity​

Answers

Yes, sweat produces toxins as well as food we consume

#help :]
Who began a doctoral program in
psychology in the United States?
A. Wilhelm Wundt
B. Margaret Floy Washburn
C. Edward B. Titchener

Answers

Answer:

C . Edward B. Titchener

Explanation:

Which of the following is the ability to use a muscle throughout its entire range motion?

Answers

Answer:

b

Explanation:

Answer:

I believe your answer will be B. Flexibility

Explanation:

Hope this helps :]  

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and have an amazing day <3

your core body temperature set point has just decreased. as a result you...

Answers

Answer:

Hypothermia, defined as a drop in core body temperature below 35 C

Explanation:

If a person’s core body temperature has decreased, they will start to feel cold. This is called hypothermia.

What is hypothermia?

A condition of the body where its temperature goes lower than 95 degrees Fahrenheit or 35 degrees Celcius is called hypothermia. This can result in major health complications. Its most immediate effect is that it hampers the ability of the brain to think properly.

The visible symptoms of hypothermia include shivering, stumbling, difficulty in breathing and speaking etc. Hypothermia is caused by an external cold environment when the body is not able to maintain a proper temperature internally.

This happens when a person has stayed in a cold environment for too long. In these conditions, the heat loss is quicker than the production of heat. This results in a quick and significant drop in temperature.

Some of the factors can be called risk factors for hypothermia. These are alcohol and substance use, old age, arthritis, diabetes etc.

Therefore, when a person’s core body temperature has decreased, they might experience hypothermia.

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regular exercise reduces the risk for cardiovascular diseases by:

Answers

Answer:

Exercise lowers blood pressure in people with hypertension, as does regular physical activity. Exercise can also lower blood cholesterol levels, which reduces the risk of developing cardiovascular disease.

Explanation:

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Specify which kitchen knife this is called and purposes.​

Answers

Answer:

looks like A vegatable knife to cut veggies

Explanation:

3. An individual will often ask "why me" during which stage of grief?

-Acceptance

-Anger

-Bargaining

-Denial

PLS HELP

WILL GIVE BRAINLIEST

Answers

Answer:

Anger

Explanation:

Once you start to live in 'actual' reality again and not in 'preferable' reality, anger might start to set in. This is a common stage to think “why me?” and “life's not fair!” You might look to blame others for the cause of your grief and also may redirect your anger to close friends and family.

Answer:

Anger

Explanation:

Good day!

Please answer this.
Because I need an answer now.​

Answers

Answer:well this is your results, put in what you are good at from 1-4. If you want to know mine personally mine is 4, 1, 4, 4, 2.

Explanation:

negative thoughts that occur while driving often surface in the form of

Answers

Answer:

Hostile verbal expression

Explanation:

the order in which your energy stores are burned when exercising areobically is?

Answers

Answer:

stored carbohydrates, stored fats, body protein

Explanation:

A copper atom has an atomic number of 29 and an atomic mass of 64. What
is the structure of this atom?
A. It has a central nucleus composed of 35 protons and 29 neutrons,
surrounded by an electron cloud containing 29 electrons.
B. It has a central nucleus composed of 29 protons and 64 neutrons,
surrounded by an electron cloud containing 29 electrons.
C. It has a central nucleus composed of 29 protons and 35 neutrons,
surrounded by an electron cloud containing 29 electrons.
D. It has a central nucleus compased of 29 protons and 29 neutrons,
surrounded by an electron cloud containing 35 electrons.


Answers

25 kakakdngot eoenfof eod ocnsnsdof sod of doenfcofn

what is the age of viability and during what weeks does a fetus reach this age?

Answers

Answer:

In general, infants that are born very early are not considered to be viable until after 24 weeks gestation. This means that if you give birth to an infant before they are 24 weeks old, their chance of surviving is usually less than 50 percent. Some infants are born before 24 weeks gestation and do survive.

Answer:

The age of viability is the age at which a baby can survive in the event of a premature birth. Most fetuses reach this age between 22 and 26 weeks. Chances of survival are slim at 22 weeks, but they steadily increase over the next few weeks.

Explanation:

how long would roughly take to break down a wool sock

Answers

Answer:

Wool socks: 1-5 years  

Like T-shirts, old wool socks are often considered non-donable and are therefore thrown in the trash. Unlike cotton T-shirts, they stay in landfills for up to five years.

Explanation:

we inhale them, swallow them, rub them in our eyes, and are constantly in a hidden, high-stakes battle with them. these disease causing agents are everywhere. what are they called?

Answers

The disease-causing agents are called PATHOGENS. These pathogenic organisms are harmful micro-organisms.

Pathogenic organisms can cause different infectious and non-infectous diseases.

For example, foodborne illnesses are generally caused by pathogens when a person consumes contaminated food.

Pathogenic organisms negatively affect the mode in which the human body functions (for example, they can destroy cells).

A well-known example of pathogenic microorganisms are Escherichia coli bacteria, which can cause, among other illnesses, urinary tract infections.

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why do i keep accidentally biting the inside of my lip

Answers

Once you’ve bitten. The inside of your lip once, it’s gets swollen and sticks out more. This makes you bite that same spot over and over again because it’s sticking out from where it normally is. You can try holding an ice cube on the spot and that should help it temporarily shrink back and help for a little while.

I hope this helps!

Could you mark me brainliest pls?

your bone structure, metabolism, and body fat distribution all contribute to your

Answers

Answer:

Body Type

Explanation:

which is not typical of the exhaustion stage of the general adaptation syndrome?

Answers

Answer:

After an extended period of stress, the body goes into the final stage of GAS, known as the exhaustion stage. At this stage, the body has depleted its energy resources by continually trying but failing to recover from the initial alarm reaction stage.

Explanation:

Your neighbor is talking to you and starts to slur their words. They complain their vision is blurred, one side of their face is drooping and they say they do not feel well.


Asthma

Seizure

Stroke

Diabetic emergency

Heart Attack

Answers

Answer:

Stroke

Explanation:

Symptoms of stroke include trouble walking, speaking, and understanding, as well as paralysis or numbness of the face, arm, or leg.

Answer:

Stroke

Explanation:

The biggest telling sign of stroke is the loss of muscle control in one half of the body ( or face ) this will also cause them to slur.

What is an impact of a food ellergy on someone's life

Answers

answer:

difficultly breathing and swelling of the tongue is two ways a food allergy can affect you

Even a tiny amount of the allergy-causing food can trigger signs and symptoms such as digestive problems, hives or swollen airways. In some people, a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis.

Trace the path of an oxygen molecule.

Match the structure to the number for when the oxygen would first contact the structure when inhaled.

1
2
3
4
5
6
7
8
Blood Vessels, Bronchi, Trachea, Larynx, Alveoli, Pharynx, Mouth/Nose, Heart

Answers

Answer:

I think this is how it goes

1. Nose/mouth

2.  Pharynx

3. Larynx

3.Trachea

4.Bronchi

5.Alveoli

6.Heart

7.Blood Vessels

Explanation: it starts out from the nose then continues down to through the lung system then the heart to the blood stream

1. Nose/mouth 2.  Pharynx 3. Larynx 4.Trachea 5.Bronchi 6.Alveoli

7.Blood vessel 8.Heart. This is correct order of path of an oxygen molecule.

What are the major function of heart?

The major organs of the circulatory system are the heart, arteries, veins and capillaries.

The heart is vital organ responsible for functions and transportation in our body.

The heart is covered by pericardium which protects the heart and the outer, inner layers and are filled with pericardial fluid which lubricates the heart during the contractions of the lungs and the diaphragm.

It pumps blood throughout the body.

The heart wall have three layers epicardium is a protective layer of connective tissue, myocardium form muscle of heart, endocardium forms inner layer , protect valves of heart.

The major function include to pump blood, supply oxygen and nutrients,  removes carbon dioxide and wastes from the blood, maintain blood pressure of the body etc.

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what has primary responsibility for eliminating alcohol

Answers

Answer:the liver is the main organ responsible for transforming alcohol into substances that your body can handle.

Explanation:

List four common signs or behaviors that may indicate the development of an eating disorder.

Answers

Answer:

1. sudden and extreme weight loss or gain

2. amenorrhea

3. scabs or redness on knuckles

4. skipping meals

5. body dysmorphia

6. obsession with working out

Explanation:

1. bingeing can cause weight gain, and anorexia weight loss

2. not getting proper nutrients or over working out can cause amenorrhea

3. knuckles may rub against teeth during purging, causing minor injury

4. ppl with eating disorders often skip meals to cut out the calories and lose weight

5. they feel as if their body is never good enough

6. working out more than needed to burn calories

Write down some points (deep points) why social media is good

Answers

-people with social anxiety can connect with people at the comfort of their own home
-people are able to keep up with loved ones
-easier to get news out
-a way to make new friends

Chronic pain, high blood pressure and immune system disorders may all be linked to:

A. Chronic stress

B. Poor diet

C. Temporary sedentary lifestyle D. Age

Answers

I think its chronic stress because when you get stressed out, your blood pressure increases but It could be your age
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