Which component of the ekg causes the heart to contract?.

Answers

Answer 1
The P wave causes atrial contraction, QRS causes ventricular contraction, T wave is the ventricular refill period, and a period to prepare for another action potential via refilling electrolytes.

Related Questions

A young woman contracted a gonorrheal infection that was successfully treated with antibiotics. In considering the likelihood of future gonorrheal infections, she should

Answers

Answer:

She should always be careful.   she could be reinfected at any time.

Explanation:

make application letter for midwifery job​

Answers

Answer:

Hello, Mrs. Lala Wayne 

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I am a registered nurse and a licensed midwife in this state, and I have been a midwife for over seven years. In my previous experience, I performed midwife nursing functions in the care of pregnant women while also monitoring and observing their condition. My communication skills are excellent, allowing me to obtain a medical history and perform screening tests as directed by the physician. These abilities are also required in order to assist mothers during their labor processes through midwife nursing care.

I can also provide new mothers and their babies with follow-up nursing care and educate them on breastfeeding, bathing, and dressing their babies. This includes instructing and educating mothers on issues concerning baby healthcare. I have no problem educating pregnant women on gynecological health care and can counsel all women on birth control issues if necessary. There would be no problem administering any and all medications as prescribed by the consulting physician.

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The weakness or wearing away of body tissues and structures is known as.

Answers

Answer:

atrophy

Explanation:

How the immune system responds to an initial pathogenic exposure.

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Answer:

The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing antibodies.

Explanation:

Immune responses to pathogens are greatly determined by the many properties of pathogens that stimulate them, which then can affect the life cycle of the pathogen.

Babies and small children are at much greater risk for developing hyponatremia than adults. Why is this?.

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Answer:

Because of their higher brain/intracranial volume ratio, children are at increased risk for these sequelae compared with adults.

Malformation of which cytoskeletal structures may be linked to an inability to contract muscle?.

Answers

Answer:

microfilaments

Explanation:

A nurse is providing care to a client who is caring for an ill spouse at home. The nurse suspects that the client may be experiencing stress from the caregiving role based on which client statement

Answers

Answer:

that the client is taking care of an ill spouse at home

Explanation:

What is the power in d of the tear layer between the cornea and the lens if the correction is ideal, taking the tear layer into account? assume that a normal human has a near point of 25. 0 cm.

Answers

-0.198 D is your answer

Can the human body survive without the frontal lobe? If so, how long is the expected life average.

Answers

Answer:

Technically, you can live without a frontal lobe. However, you would experience a total paralysis of your cognitive abilities and motor control..

The person can't speak or acces to its own thought so it's not easily possible to determine its life duration..

A client with asthma is using ipratropium (Atrovent), an anticholinergic. What is the most appropriate teaching point for this client as it relates to exercising in higher temperatures

Answers

The most appropriate teaching point for this client is to limit outside activity. Asthma is a respiratory disease.

What is asthma?

Asthma is a respiratory inflammatory disease that affects the lungs and difficult the ability to breathe.

The particles in suspension such as pollen and pollutants can difficult the respiration in asthmatic persons.

Moreover, anticholinergic drugs such as Atrovent can block the action of the acetylcholine neurotransmitter.

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The integumentary system includes all of the following except

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A.
nails.


B.
hair.


C.
sweat glands.


D.
lymph glands.

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Answer:

D, Lymph Glands

:)

What body systems are dependent onthe respiratory system.

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Your respiratory system relies on your circulatory system to deliver the oxygen it gathers, while the muscles of your heart cannot function without the oxygen they receive from your lungs. The bones of your skull and spine protect your brain and spinal cord, but your brain regulates the position of your bones by controlling your muscles.

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Which Dietary Reference Intake (DRI) standard is least effective when planning for adequate intake of nutrients in your diet

Answers

Answer:

Upper Limit (UL) is the DRI

Upper Limit (UL) standard is least effective when planning for adequate intake of nutrients in your diet, hence option B is correct.

What is Dietary Reference Intake (DRI)?

Reference values for nutrients are known as reference dietary intakes (DRIS). They pinpoint precise nutrient dosages that are intended to support people in maintaining good health and working against unhealthy overeating and chronic disease.

It is consistent with reference values for nutrient consumption and is useful for assisting people in selecting foods that provide the appropriate quantity of nutrients based on estimated, suggested, adequate, and acceptable averages.

Therefore, the amount of nutrition that practically everyone in the general population can consume without running the danger of negative health repercussions. Adverse effects are more likely if intake rises above the UL.

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The given question is incomplete, so the most probable complete  question is,

Which Dietary Reference Intake (DRI) standard is least effective when planning for adequate intake of nutrients in your diet?

a.) Recommended Dietary Allowance (RDA)

b.) Upper Limit (UL)

c.) Acceptable Macronutrient Distribution Range (AMDR)

d.) Adequate Intake (AI)

In the majority of adults with acute concussion, how many days does it take for signs and symptoms to resolve

Answers

Answer:

Explanation:

Headache is the most common symptom. Most symptoms resolve within 14 to 21 days. Although recovery plans are unique to each person, all involve mental and physical rest and a gradual return to activity

Some studies have suggested that a nightly glass of wine may not only take the edge off a day but also improve health. Is wine good for your health

Answers

Drinking an occasional glass of red wine is good for you it provides antioxidants, may promote longevity, and can help protect against heart disease and harmful inflammation, among other benefits.
Red wine likely has a higher level of antioxidants than white wine.

An immunodeficiency is when (select all that apply):.

Answers

Answer:

An immune deficiency disease or disorder occurs when the immune system is not working as expected.

Explanation:

Janet is 5 months pregnant and had a test at her doctor's office in which she was given a picture of her baby in the womb. The test that Janet had is called _____.

Answers

An ultrasound because it is an imaging test that uses soundwaves to create a picture known as sonogram of organs tissues and other structures inside the body

How would you classify j. H. ’s pneumonia? why is this important?.

Answers

Answer:

This is pneumonia affecting immunocompromised patients

Explanation:

Most of the patients infected with HiV /AIDS

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Answer:

How do you classify community-acquired pneumonia?

Mild, moderate or severe pneumonia

To be able to provide the right treatment, doctors also classify community-acquired pneumonia as mild, moderate or severe. They take the risk of complications into account as well.

Explanation:

-Hope this helps!

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Trace a drop of blood as it enters the heart, goes through pulmonary circulation, returns to the heart, and goes to body cells. Name each chamber and valve in the heart, each blood vessel or type of vessel, and any organs blood passes through. MAKE SURE THIS IS IN ORDER!

Answers

Answer:

Superior/inferior vena cava, right atrium,Tricuspid valve, right ventricle, pulmonary valve, Pulmonary artery, lungs, pulmonary veins,left atrium,bicuspid valve, left ventricle,aortic valve, aorta, arteries, arterioles, capillaries, venules, veins

Explanation:

No explanation

6.
You have identified that a patient is breathing adequately on his own. However, you believe he may benefit from supplemental oxygen. Describe what factors you would consider when choosing an
oxygen-delivery device. Why might you choose a nonrebreather mask over a nasal
cannula?

7
You have identified that a patient is not breathing adequately and requires positive pressure ventilation. Explain what factor you would consider when choosing an oxygen delivery device. Why might
you choose a pocket mask over a bag mask device?

50 Points

Answers

Answer:

Standard oxygen therapy delivered through a nasal cannula or another device, such as a non-rebreather mask (NRBM), delivers cold (not warmed) and dry (not humidified) gas. This cold, dry gas can lead to airway inflammation, increase airway resistance, and impair mucociliary function, possibly impairing secretion clearance .

And for 7 so it can procect yourself

Explanation:

Most foods that are high in calcium are poor sources of iron. This statement illustrates the importance of the characteristic of a nutritious diet known as:

Answers

This statement illustrates the characteristic of a diet known as : Balance Diet

What is a balanced diet

A Balanced diet is a diet ( nutritious ) whereby all the necessary nutrients required for the proper functioning and growth of the body cell are present. A balanced diet is usually made of various kinds of foods rich in all the required nutrients.

Therefore a food high in calcium and low or poor in iron calcium cannot represent a balanced diet because it lacks the required amount of iron needed in the body.

Hence we can conclude that the statement that illustrates the importance of a diet known as balanced diet.

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when performing a urinalysis, the medical assistant notices a sweet or fruity smell. which diagnosis or disorder may be indicated by this scent

Answers

Answer:

Diabetes or High blood sugar

Explanation:

Patient with diabetes pass sugar or glucose in the urine

What is the full meaning of DDT

Answers

Answer:

A pesticide made from a synthetic organic chemical. That is what a DDT is.

Explanation:

A synthetic chemical

Explain the difference between inate immune system and adaptive immune system. Mention when they are developed, the type of cell used and any general difference.

Answers

Answer:

The immune system is compromised of three different 'layers'; which are barrier immunity, innate immunity, and acquired (adaptive) immunity. Barrier immunity is typically thought of as the skin. The skin contains immune cells, secretes antimicrobial proteins, and can mechanically protect against foreign invaders by desquamation (shedding skin). However, barrier protection can also be found in the nose, pharynx, gi epithelium, and respiratory epithelium. A good example of this would be the cilia in respiratory epithelium that only direct foreign bodies up from the lower lobe up to the trachea.

Now onto your specific question, which pertains to the next two barriers of immunity. If something is able to pass the barrier immunity and successful enters our body, then the innate immunity will kick in. The innate immune system is compromised of varying cells such as: monocytes, DCs, neutrophils, basophils, eosinophils, lymphoid cells (including NK cells). These cells typical will start to develop in the 5th week of gestation in a normal person. If the innate immunity is not the answer to your problems then the adaptive system will kick in. This system is compromised of lymphocytes, more specifically T cells and B cells. Adaptive immunity is developed throughout life starting in early childhood, as you are exposed to the world. Developing neonatal adaptive immunity is a widely talked about subject in medicine as it can be developed, but it seems that there is not long lasting immunity.

The general differences between the two are as follows:

Innate:

-fast acting

-response is none targeted

-no more of germs killed in past

-comprised of neutrophils and macrophages

Adaptive:

-slow to respond

-Antibodies act against specific targets

-antibodies remember past germs

-antibodies are created by T cells and B cells

Hope this helps! If not send a message. :)

Who conducted the first experiments using split-brain patients?.

Answers

Roger Sperry. Was the first to perform experiments on cats, monkeys, and he would study the functional differences between the two hemispheres of the brain of the United States.
however in history the split brain operation and humans was First reported in early 1940s by the neurosurgeons van waganen and Herron.

What is an Endocrinologist? What does an Endocrinologist do?.

Answers

Endocrinologists specialize in treating disorders of the endocrine system, the network of hormone-producing glands in your body :)

The nurse presents information on intimate partner violence (IPV) to a group of community members. The nurse will provide additional teaching when a community member makes which statement

Answers

The answer is a I hope this helps

Compare the humoral model of disease (part 1) to the miasma model of disease. Which do you think is closest to our modern understanding of disease?.

Answers

Answer:different models can influence thinking, based on the model different experiments will be done

Explanation:

The miasma theory is an outdated; stated that diseases such as cholera, were caused by a miasma, also known as night air. According to Galen's humoral model of disease , good health depends on a balance of four fluids: blood, choler, phlegm, and black bile.

What is humoral model of disease?

Individual diseases did not exist in humoral theory in the sense that we understand them now. Diseases were thought to be states of physical imbalance rather than forces or things distinct from the body.

Humoral theory, which derives from the writings of the ancient Greek physician Galen, asserts that the balance of four essential fluids—blood, choler (yellow bile), phlegm, and black bile—is essential for optimal health.

Different moods and personality traits were considered to be caused by an imbalance between these humours; words like sanguine, phlegmatic, choleric, and melancholy are still in use today. The humoral model of disease is therefore most in line with how we currently see illness.

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What are the 5 main parts of the cardiovascular system?.

Answers

Answer:

the heart, arteries, veins, capillaries and blood.

Explanation:

Answer:

ABC-HV, Arteries, Blood, Capillaries, Heart, Veins

Explanation:

A client has had a stroke and will require long-term tube feeding. Which type of feeding tubes would be most appropriate for this client's needs

Answers

A PEG tube would be the most appropriate for a patient that requires long-term tube feeding.

What is a PEG tube?

PEG stands for percutaneous endoscopic gastrostomy. It is a feeding tube that is connected to the stomach in the abdomen.

Who can use a PEG tube?People that had a stroke have difficulties swallowing.People who lack appetite.People with esophagus or oral problems.What can a person with a PEG tube eat?

People with this type of tube inject

Nutritional fluids LiquidsMedicines through it.

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