Recognition of self vs. non-self by the adaptive immune system in humans is accomplished through the major histocompatibility complex (MHC) molecules. MHC molecules, also known as human leukocyte antigens (HLAs) in humans, play a crucial role in presenting antigens to immune cells, specifically T cells.
The process of antigen presentation involves MHC molecules presenting fragments of proteins (antigens) derived from both self and non-self sources to T cells. T cells have receptors known as T cell receptors (TCRs) that can recognize and bind to specific antigens presented by MHC molecules.
In the case of self-antigens, MHC molecules present fragments of proteins derived from normal body cells. T cells with TCRs that recognize self-antigens are negatively selected or eliminated during the development of the immune system, preventing the activation of immune responses against the body's own cells.
When encountering non-self antigens, such as those from pathogens (bacteria, viruses, etc.), MHC molecules present these foreign antigens to T cells. T cells with TCRs that recognize non-self antigens are positively selected and activated, leading to an immune response against the invading pathogens.
The interaction between MHC molecules and T cell receptors is crucial for the adaptive immune system to distinguish self from non-self and mount appropriate immune responses against pathogens while preserving tolerance to self.
It is worth noting that there are different classes of MHC molecules (MHC class I and MHC class II) involved in antigen presentation, each with distinct functions and antigen-presenting capabilities. MHC class I molecules are primarily responsible for presenting antigens derived from intracellular pathogens, while MHC class II molecules present antigens derived from extracellular pathogens or other external sources.
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"You were looking at old pictures, and you realize that you are a lot taller now than you were when you were five." What body systems were involved in this change?
Answer:
Your vascular system, your endocrine system, and your nervous system
Explanation:
What can you do to overcome a challenge?
You should quit trying and just give up.
You should blame someone else for your problem.
You should be persistent and keep trying.
You should avoid the challenge because it's too hard.
Answer:
I go with c because we have to keep trying no matter what, we cant go in a dark blank space with nothing. Imagine this, your depressed and your grades are down, you look at your friends all the way on top and your on the bottom. How can you fix this? Try.
Explanation:
ability to achieve maximum speed from a stationary position is called
Answer:
Acceleration Runs They test the ability to achieve high speed of locomotion from a stationary position or from a slow-moving position. Acceleration ability is improved indirectly by improving on explosive strength, technique and movement frequency
Explanation:
The ability to achieve maximum speed from a stationary position is called: acceleration ability.
A good health can be defined as the state of well-being in which all of the components of an individual's health are in balance. Thus, this state of well-being comprises six (6) important components and they are;
Physical. Spiritual.Emotional.Environmental.Social.Mental (intellectual).In order to have a good health, improve well-being, body mass index (BMI), and wellness (heart health), physicians and medical professionals usually advise interested individuals to engage in physical activity such as an aerobic exercise.
An aerobic exercise refers to all forms of physical activity that an individual engages in, so as to increase the heart rate (from low to high intensity) in response to the level of oxygen required by any activated or working muscle in the human body. Some examples of an aerobic exercise (cardio-fitness activity) includes; cycling, swimming, jogging, walking, skiing, etc.
In Physical health education, acceleration ability can be defined as the ability of an individual to achieve or gain maximum speed while moving from a stationary position. Thus, with an acceleration ability, it is possible for someone such as a sportsman to easily achieve a position of stability and a low-speed within the shortest possible time to the maximum self-propelled speed.
In conclusion, the acceleration ability of an individual is highly dependent on the following factors;
Flexibility.Body technique.Explosive strength.Find more information: https://brainly.com/question/14379808
2. How will you make sure that you are
achieving your health goals?
Answer:
List
Explanation:
Make a list for yourself, write the do's and don't in your plan. Include regular exercise, proper diet, healthy foods that are rich in nutrients, enough sleep and lastly motivate yourself.
spiritual wellness is only about religion true or false?
Name 5 examples of power in sports and fitness (with an example of how this sport is showing power) pls help I will mark brainliest
Answer: I don’t know but i will try my best. 1. Soccer, it gives you foot work. 2. Volley ball, it helps with your arms. 3. Swimmin, it helps you hold your breath also it helps you, if you are about to drown you can swim to the shore or something like that. 4. Baseball, it helps you to punch some one. Ha!!! One more. 5. Running, it helps all the parts where your legs are and helps you run fast if you do it every day.
Explanation: p.s. I am only 10
state two applications of pressure to health
Answer:
it can cause death or dangerous condition, it can stop blood from following in the body
What progress has been made in treating HIV and what do scientists hope may cure it in the future?
Answer:
Researchers haven’t yet discovered an effective vaccine for HIV. Advances in technology and medical capabilities have brought more advanced HIV treatments.
Explanation:
HELP ME ASAP!!!!!!!!!!!!!!
How can you use child-initiated and teacher-initiated instruction in the classroom to best support learning?
Answer:
Child-initiated alongside teacher-initiated instruction in the classroom is beneficial for positive influence and helping children to explore independence. Child-initiated instruction can support learning through critical thinking skills and observing what their interests are. Teacher-initiated instruction is what helps set a positive influence on children and helps guide on what the tasks are for the day. It gives structure and schedule.
Explanation:
I haven't yet received a grade on this, but I hope it helps!
The teacher provides guidance and support for students to explore and learn independently, while also introducing new concepts and facilitating learning through direct instruction and modeling.
What is child-initiated and teacher-initiated instruction?Child-initiated instruction refers to the approach of allowing children to take the lead in their own learning, through exploration and discovery. This can involve providing children with access to a wide range of materials and resources, and allowing them to choose what they want to learn about and how they want to learn it.
Teacher-initiated instruction, on the other hand, refers to the approach of the teacher providing more direct instruction to the students, through lectures, demonstrations, and other structured activities.
Both child-initiated and teacher-initiated instruction have their benefits and can be used to support learning in the classroom.
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i WILL eat your knee caps!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
I'm gonna leave now.............
Explanation:
Select the skills or techniques being exhibited by the healthcare professional. (Check all of the boxes that apply)
A dental assistant shows a patient how to floss his teeth. The assistant tears off a long piece of floss and wraps it around her fingers. She first shows the patient how to floss using a dental model, then gives the patient a length of string to try it himself.
using visual aids to convey information
using a video to convey information
asking the patient to practice a health behavior
asking the patient questions to gauge his or her understanding
Answer:
using visual aids to convey information
Explanation: Because she visualizes on how to floss your teeth in front of the patient.
Answer:
Options A and C
Explanation:
Got it right on the test!
Question 63
Ceftriaxone 2.5 grams intravenous piggyback (IVPB) every 8 hours is
prescribed for a client with a severe infection. The pharmacy sends a vial
labeled 5 grams per 10 mL. What volume of ceftriaxone should the nurse
add to the IVPB solution? Record your answer using a whole number.
mL
Confident
Not Sure
Answer:
im pretty sure it 500 grams tops
Explanation:
The social interaction theory claims that aggressive behavior is __________. A. beneficial for releasing toxic emotions B. used to control the behavior of another C. dependent upon the level of frustration felt D. a physiological reaction to environmental stimuli Please select the best answer from the choices provided A B C D
The social interaction theory claims that aggressive behavior is option b. B. used to control the behavior of another.
What is social interaction theory?It is the theory for language development that shows emphasizes role for social interaction that lies between the developing child and linguistically knowledgeable adults.
hence, the option b is correct.
And, the rest of the options are wrong.
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A person leaning on a golf club with their hand on their hip. What is the ‘moment’ in this photograph?
Answer:
With each moment that goes by, your rotation will be building speed and your hands will be moving faster and faster.
Hope it helped:)
Brainliest?
Answer:
Tiger Woods is studying the golf course as he waits to play. The photographer captured him in a moment of relaxation and contemplation.
Explanation: this was the sample answer, hope it helped
Hello, I had my first period on January 14, 2021. Today, I went to the restroom a few times and saw a few red things. I think it is my period, but I am three days late. Is that normal for a second period? Thank you!
Answer:
Periods for the first few years will be very unexpectable, basically it's never right on time and you'll have a lot of spotting, where you have a little blood at random times of the month but it's not you getting your period. Sometimes you'll skip two months or have two periods in the same month. It's not abnormal, it's like this for almost everyone who gets periods, just make sure you always have quality pads/tampons on you and a fresh pair of underwear. Also try and get liners (there basically just really thin pads with no wings or anything) for when you're spotting, so you won't have to keep changing your underwear.
Explanation:
write the types of dysentery
Answer:
There are 2 major types: Bacillary and Amebic Dysentry.
Explanation:
Both caused by bacteria and amoebas.
name four ways to improve your health
Answer:
Workout
Diet
Wake up early
Walk in the evening
Answer:
here
Explanation:
no junk food
going for a walk
no sitting inside all day
eating something healthy
the fifth vital sign is____a.blood pressure b.pain .c.temperature d.respiration
What is social health? And why is it to important.
Emma wants to pursue a career in health informatics that requires minimal amount of time spent in study after high school. She would like to begin work within a year of leaving high school. Which two of these careers will be suitable for her?
A.certified documentation improvement practitioner
B.registered health information technician
C.health information technician
D.certified coding associate
E.clinical informaticist
remember pick to answers
What are the benefits and harms of abortion?
The benefits and harms of abortion vary according to each country, as this is a controversial issue that is perceived differently in certain cultures due to the religious aspect that is also attributed to it.
Some of the benefits of legalizing abortion are the greater female security and the right to choose, because in countries where abortion is illegal, there are clandestine clinics and abortion procedures that are harmful to the health of women.
Some harms are related to women's health as a whole, as abortion is a practice that can affect reproductive and mental health, causing depression and other illnesses.
This is a process of extreme impact on women's lives, so information and professional monitoring must be provided so that the best decision can be made.
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What are some of the effects of using illegal drugs?
Answer:
Drug abuse can have a number of damaging consequences on an addict’s social and emotional well-being, including:
Loss of employment
Relationship loss
Incarceration
Financial trouble
Homelessness
Risky sexual behavior
Does someone know this?
The transverse plane does not divide the body into two ___ halves.
Answer Choices:
A. Distal
B. Perpendicular
C. Symmetrical
If you don’t know it, it’s fine :)
Answer:
C. Symmetrical
Explanation:
A transversal plane is a plane that intersects two or more planes. The transverse plane is also referred to as horizontal plane. The transverse plane divides the body into two non-symmetrical sections: one section containing the head and another section containing the tail (i.e., superior part and inferior part, respectively).
How will cell affect the overall
function of your body
Answer:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
The structure and shape of each type of human cell depends on what function it will perform in the body. For example, red blood cells (RBCs) are very small, flat discs, which allows them to easily fit through narrow capillaries and around sharp corners in the circulatory system to deliver oxygen throughout the body.
Which of the following is an example of cooking ahead?
A. Having a meal plan and sticking to it
B. Cooking a roast and the leftovers for stew
C. Preparing a single portion if you are not cooking for a family
D. Making sure that you have all the ingredients for a week’s worth of meals
Answer:
d
Explanation:
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PLEASE HELP ME POOO
4. List down at least 5 proper etiquette and safety in using facilities and
equipment in:
Playing court or field
1.
2.
3.
4.
5.
Dance area or studios
1.
2.
3.
4.
5.
Gym
1.
2.
3.
4.
5.
Answer:
shoes tide, no running, no pushing, no
Compare 2 types of food, one good in nutrition, and another poor in nutrition.
no trolling pls
Answer:
Proper nutrition helps to keep you in good health and prevents many types of chronic disease. Poor nutrition may increase your risk of heart disease, diabetes and certain forms of cancer, according to the World Health Organization. Bad nutrition can also cause you to gain weight, have bone problems and develop nutritional deficiencies. In order to improve your diet, you'll need to eat more whole foods and avoid highly refined and processed foods.
Macronutrients
Good nutrition involves eating whole foods from a variety of food groups throughout the day. Whole foods are unprocessed, natural foods that don't contain any added or artificial ingredients. They supply you with macronutrients, which are carbohydrates, fat and protein. Your body relies on carbohydrates for energy to support brain and muscle function. Choose whole food sources of carbohydrates, such as brown rice, quinoa, oats and whole wheat bread, to get the most nutrients per serving of carbohydrate. Healthy fats, which come from nuts, seeds, vegetable oils and fish, are an excellent source of energy, help to maintain cell membranes, aid in absorption of certain vitamins and provide cushioning to organs. Healthy sources of protein in your diet, from foods such as beans, lean meat and low-fat dairy products, help with the growth and repair of muscles and tissues and the production of hormones. They also support immune function. An inadequate amount of carbohydrate, fat or protein in the diet is considered bad nutrition and may lead to compromised health.
Micronutrients
Good nutrition also involves the adequate intake of micronutrients, such as vitamins, minerals, antioxidants and fiber. These nutrients are needed in smaller amounts than the macronutrients, but are essential to good health. Eating a variety of fresh fruits and vegetables, whole grains, dairy products, lean protein and nuts can help meet your daily needs for these nutrients. Bad nutrition from not eating a variety of whole foods may lead to deficiencies of micronutrients, such as iron, vitamin A, folate and zinc. Over time, the lack of these nutrients can lead to anemia, vision problems, birth defects and compromised immune function, according to the Centers For Disease Control and Prevention.
Avoiding Bad Nutrition
An unbalanced or bad diet may contain too much of certain nutrients or may lack others. For example, a diet high in refined and processed foods, such as snack foods, fast foods, desserts, candy and soda, contains an excess amount of sugar, fat, sodium and calories. Artificial ingredients such as high fructose corn syrup, partially hydrogenated oils, stabilizers, thickeners, flavorings and colorings also contribute to poor nutrition. Avoid packaged and processed foods as much as possible to get the most nutrients and improve your overall nutrition.
Guidelines for Good Nutrition
You can improve your nutrition by following guidelines set for healthy eating. ChooseMyPlate.gov notes that a well-balanced, 2,000-calorie-per-day diet contains 6 ounces of grains, 2.5 cups of vegetables, 2 cups of fruit, 3 cups of dairy, 5.5 ounces of protein and 6 teaspoons of oil. The Institute of Medicine suggests healthy adults consume 45 to 65 percent of their total calories from carbohydrates, 20 to 35 percent of calories from fats and 10 to 35 percent of calories from proteins. Men should also aim for 30 to 38 grams of fiber daily; women should aim for 21 to 25 grams daily.
On your way home from work, you stop off at the store for a few things. In a hurry, you get in the shortest checkout line, but the person ahead of you has too many things, is slow moving, and does not appear to understand the language. You are still in your work clothes, and your facility ID badge is clearly visible to everyone nearby.
Select the next step that you think provides the best public relations.
Sigh loudly and make a rude comment to the person behind you in line.
Tell the person ahead of you that she ought to go shopping in her own country.
Leave your items on the checkout belt and run out the door so you aren’t late to meet your friend.
Be patient and wait your turn. Better yet, offer to help bag groceries for the person ahead of you.
Answer:
D, be patient
Explanation:
Provide two examples of how health care workers can demonstrate their commitment to quality control through their personal appearance.
Answer:
Explanation:
Quality control remains an important aspect of sectors and business process. It is aimed at ensuring that standard processes or tethers are both attained and maintained. In health care, quality control remains cogent too by ensuring that laid down specifications are met and adhered too.
Through appearance of heath workers, they could preach they level of cleanliness which they expect people to attain by donning and ensuring their attires are neat and clean at all times as well as the keeping a good fitness regime to maintain a good body shape.
Also, the use of certain enhancement to certain period in line with set regulations is also a way fo showcasing quality control in appearance of health workers. This may include the use of face masks in populated areas, use of shades to prevent direct effect of sunlight hitting the eye and so on.
The two examples of how healthcare workers can demonstrate their commitment to quality control through their personal appearance are by dressing in clean, professional attire and Keeping their hair and nails clean and neat.
Dress in clean, professional attire. This shows that you take your job seriously and that you are committed to providing quality care. It also shows that you respect your patients and their families.
Keep your hair and nails clean and neat. This helps to prevent the spread of infection and shows that you are mindful of the health and safety of your patients.
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foods that is rich in phytochemicals and antioxidant
w_o_ _ _rai_s
Answer:
apple
garlic
cabbage
onion
red peper
cauli flower are some food which are rich in this