Answer:
Key points
Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive.
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.
The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
The survival of the organism depends on the integrated activity of all the organ systems, often coordinated by the endocrine and nervous systems.
Introduction
If you were a single-celled organism and you lived in a nutrient-rich place, staying alive would be pretty straightforward. For instance, if you were an amoeba living in a pond, you could absorb nutrients straight from your environment. The oxygen you would need for metabolism could diffuse in across your cell membrane, and carbon dioxide and other wastes could diffuse out. When the time came to reproduce, you could just divide yourself in two!
However, odds are you are not an amoeba—given that you're using Khan Academy right now—and things aren’t quite so simple for big, many-celled organisms like human beings. Your complex body has over 30 trillion cells, and most of those cells aren’t in direct contact with the external environment.^11start superscript, 1, end superscript A cell deep inside your body—in one of your bones, say, or in your liver—can’t get the nutrients or oxygen it needs directly from the environment.
How, then, does the body nourish its cells and keep itself running? Let's take a closer look at how the organization of your amazing body makes this possible.
I hope it helps you ✌
The EPA requires the use of precise forms called the:
A) Hazardous Waste Identification Module
B) Uniform Hazardous Waste Manifest
C) Unique Hazardous Waste Identifier
Eing the exar
D) Hazardous Waste Papers and Notification Directions
Eiento
true or false
1. The game tatsing is an outdoor game.
2. Skills develop in tatsing is related to fitness coordination, power and muscular strength.
3. Tatsing is derived from the English word touching.
4. Players do not need bottle caps and slippers in playing tatsing game.
5. Recording the number of bottle caps collected will identify the winner of the game.
Answer:
1.true
2.true
3.true
4.true
5.false
Answer:
true
true
true
true
false
Explanation:
2. Blood carries nutrients and what important gas?
What is correct definittion for individual team sports?
Answer:
one person plays at a time
Explanation:
sports in which one player competes at a time, for individual points only.
Jeremy wants to lose 10 pounds.
If he doesn’t change his diet, how many extra calories must he expend to be able to lose 10 pounds? ____________
If he burned an extra 350 calories each day doing extra physical activity and kept his energy intake the same, how many days would it take Jeremy to lose 10 pounds? _______________
(Hint: There are 3,500 calories in each pound of fat.)
Answer:
1) he will need to burn 35,000 calories
Explanation:
To lose 10 pounds he need to burn 35000 extra calories.
If he burned extra 350 calories each day, It would take him 100 days to lose 10 pounds.
What are calories?
It is a unit of energy. it is the energy people get from the food and drink they consume.
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Which benefit of playing with others helps me meet new friends and become a team player?
Answer:
Companionship
Explanation:
maybe
A body
is a somewhat
independent part of the body that
performs a specific function.
A. cell
B. organ
C. tissue
Answer:
B organ I think I learn that in class today not sure but it is B will I think it is
Looking back at your life, how has technology changed and how has it changed your life? What are some positive aspects of this change and some negatives? How do you anticipate that technology will change the lives of your children in relation to your own life?
Which Two strategies can help reduce Richard’s stress?
Answer:
556 Diathesis-stress model: a person may be predisposed for a psychological disease ... Describe how exposure therapy can help reduce your fear of spiders, and distinguish ... Discuss at least two advantages and two disadvantages. ... Within the context of his job, describe some aspects of Richard's behavior
Explanation:
Answer:
the first one and the fourth one.
How can we stay safe around water?
List 4 reasons why it is important to stay in good physical health.
Answer:
1. Healthy for your heart.
2. Healthy for your mentality.
3. Live a longer more prosperous life.
4. Keep from being too obese.
Explanation:
The heart sounds are caused by:
A.movement of blood through the chambers
B.contraction of the muscles
C.blood flowing into the aorta
D.the snapping shut of the valves
Answer:
a
Explanation:
the blood move through the chambers
2. Why is knowledge of heart valves and the sounds they make important
to doctors? Explain.
Answer:
The heart has four chambers — two upper chambers (called atria) and two lower chambers (ventricles). The heart has valves that temporarily close to permit blood flow in only one direction. The valves are located between the atria and ventricles, and between the ventricles and the major arteries from the heart.
Normal heart sounds are called S1 and S2. They are the “lubb-dupp” sounds that are thought of as the heartbeat. These sounds are produced when the heart valves close.
Because the heart is also divided into a right side and a left side, sometimes these sounds may be somewhat divided — most commonly noted is a split S2, caused when the right and left ventricles contract at very slightly different times. This is normal, but occasionally the nature of the split can indicate an abnormality such as enlargement of one of the ventricles.
Murmurs are blowing, whooshing, or rasping sounds. They are the result of vibrations caused by turbulent blood flow patterns. This can happen when a valve does not close tightly (such as with mitral regurgitation), or when the blood is flowing through a narrowed opening or a stiff valve (such as with aortic stenosis).
Explanation:
My BPM is 62-whats yours?
What is a healthy Heartrate for a High School Softball player????
Currently mine is 73! Most experienced athletes have lower than average resting BPMs. Healthy and skilled athletes have an average of 40 BPM. Hope this helped!
Answer:40 BPM
Healthy and skilled athletes have an average of 40 BPM.
Explanation:hi grey its kayden how are u
Ratios during and emergency
A. Do not need to be maintained
B. Must be maintained
C. Don’t not need to be maintained if there are no infants in care
D. Only have to maintained if there is an evacuation
Answer:
its answer B:Must be mantained
Ratios during an emergency must be maintained. Therefore, option (B) is correct.
Why ratios should be maintained during an emergency?An emergency is a pressing matter that requires immediate attention,such as a sudden, serious event or a quick change in the situation that puts one's life, health, or property in jeopardy.
To ensure safe and high-quality care, it is essential to maintain optimum ratios. It may be difficult to offer effective supervision and properly address the fundamental requirements of the children in your care if you exceed the ratios set by your state or agency. It may put you and the kids in grave danger.
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Medicaid is a government health insurance program. What is the eligibility criterion for this program? low-income, age, disability, chronic illness
What would happen if you took 10 kittens and 10 puppies and created a 2 acre place on the moon with food and water
Answer:
XD
Explanation:
Depends did you or did you not dome the area and fill it with oxygen?
If you did then they would be happily floating around eating and playing.
If you didn't they would die and their bodies would float off into space with their food. Realisitcally speaking
the fifth vital sign is____a.blood pressure b.pain .c.temperature d.respiration
how can we enjoy clean and healthy environment
Answer:
Plant trees and landscape with native plants,Make sure your waste goes to the right place,and Invest in a reusable water bottle..
Explanation:
how did Nelson Mandela plan to attain political emancipation
Answer:
Here's the answer..!Please answer my last question I askedPLEASE ANSWER ASAP!!!
Is this statement true or false: The first step in coping with distress is recognizing it.
True
False
Answer:
true . . . . . . . . . . .. . . . . . . . . . . . . . . . . .
which actions are recommended if a person wants to keep a healthy weight?
( pls answer quickly )
A. Eating low fat or extra lean meats
B. eating fish multiple times a week
C. eating a considerable number of high fat foods
D. eating low fat dairy products
Answer:
A. eating low fat or extra lean meals
Explanation:
for B it wouldn't be the answer because even though fish may be healthy eating an abnormal amount would not help lose weight or maintain your figure. for C the wrong answer is just self-explanatory, it contains an large amount of fat. for D the products may be low fat but diary is a product that contains a lot of fat in it so even with it being a low fat product it still has a high fat count.
PLEASE HELP
Heat cramps, heat exhaustion & heatstroke are all the same
True or False?
Answer:
THE ANSWER IS FALSE
Explanation:
After completing a fitness evaluation, what steps should you take to improve your performance?
Answer:
After completing a fitness evaluation, you should review your results, create challenging goals, create a personal training plan, and reevaluate your goals once you've reached the end of the plan.
Explanation:
Reviewing your findings after a fitness exam can help you set ambitious goals, develop a customised training schedule, and reassess your objectives after the schedule is complete.
What is fitness?Fitness is defined as the capacity to carry out everyday tasks with maximum efficiency, strength, and endurance while managing illness, weariness, and stress and reducing inactive behaviour.
One of the most crucial things you can do for your health is to exercise regularly. Physical activity may strengthen your bones and muscles, help you maintain a healthy weight, increase your ability to carry out daily tasks, and improve your cognitive health.
Reviewing your findings after a fitness exam can help you set ambitious goals, develop a customised training schedule, and reassess your objectives after the schedule is complete.
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How are the cells in one system different from cells in other systems?
Answer:
Each of your body systems relies on the others to work well. 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.
Explanation:
A Ladder of Complexity
It can be helpful to visualize the levels of organization as a ladder. Beginning at the bottom rung with the most basic component of the human body, you can imagine each subsequent rung as a new level of organization, building in complexity as you work your way up the ladder.
Cells in the Human Body
The simplest unit of life is the cell. In fact, some organisms like bacteria are nothing more than a single cell. The human body contains approximately 30 trillion cells and that is without considering all the unicellular bacteria that naturally colonize the digestive tract. Scientists estimate there are approximately 200 unique types of cells in the human body.
Cells Form Tissues
Groups of cells organized together for a specific function form tissues. There are four basic types of tissue in the human body: epithelial, muscle, nerve and connective. Epithelial tissue covers the exterior of the body as well as the linings of the organs and cavities of the body. Muscle tissue contains cells that are sometimes called “excitable” because they are able to contract and enable movement. Nerve tissue conducts electrical impulses and send signals through the body. Connective tissue holds the body together and includes both bones and blood.
Tissues Form Organs
An organ is two or more tissues that come together to form a single unit with a unique structure and function. The heart, for example, is an organ that contains all four types of tissue to accomplish its very important task. There are 78 organs in the human body, including five organs considered vital for life. These vital organs are the brain, heart, lungs, kidney and liver. The largest human organ is the skin, which can weigh around 20 pounds.
Of course, the levels of organization of the human body don’t stop with the organs. Individual organs work together in nine major organ systems. And, at the very top of the ladder, all those systems, organs, tissues and cells come together to form an organism: you!
(hope this helps can i plz have brainlist :D hehe)
The cells in one system are different from cells in different system as the cells of one system has a property of differentiation in them.
What is the types of cells ?The cells types varies on the number, shape and size of the nucleus where one nucleus means the cell is uninucleated , two nucleus means binucleated, multiple nucleus means the cell is multinucleated.
Every cell has a property of differentiation property that is they are assigned a different duty that is they are given a duty to perform certain functions.
The cells that are given a property of differentiation and given a property of division in which they divide in a controlled manner depending on the type of division that is followed up.
Therefore, differentiation is the property because of which they are different from one system to another.
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Which of the following is not an essential nutrient?
- vitamin
- water
- calories
- fat
- mineral
- carbohydrates
- protein
Answer:
fat
Explanation:
Fat is a source of essential fatty acids, which the body cannot make itself. Fat helps the body absorb vitamin A, vitamin D and vitamin E. These vitamins are fat-soluble, which means they can only be absorbed with the help of fats.
If you need to lose a lot of weight, you should use a diet that guarantees quick weight loss.
True or False
Answer:
TRUEExplanation:
yes because diet plays an important role in our life by gaining or lossing weight
MARK ME AS BRAINLISTPLZ FOLLOW MEAnswer:
true
Explanation:
As a driver, when you see these stakes, what should you be careful of?
Answer: Blind driveways, accidents, road construction
Explanation:
What is the active ingredient in marijuana?
How can teeth be kept healthy?
Choose exactly 3 answers that are correct
brushing teeth
O rinsing with a mouthwash that contains plaque
flossing teeth
visling the dentist regularly
Answer:
- Brushing teeth
- Flossing teeth
- Visiting the dentist regularly
Explanation:
Mouthwash with plaque doesn't exist. Plaque is what builds up on your teeth that needs to be brushed away
