Why platelet not active to clotting blood before we have injury?​

Answers

Answer 1

Answer:

Platelets are not activated before an injury occurs because that activation is inhibited while they are circulating and there is no damage to the vacular wall.

Explanation:

Platelets are responsible for forming a haemostatic stopper, at the end of the blood coagulation process. These blood components have the ability to go to the place where the vessel wall is damaged and clump together to prevent blood from leaking out.

Platelet migration and activation occurs when the vascular wall endothelium is injured. When this happens, some substances are released - such as adrenaline, ADP and thromboxane A2, among others - and promote platelet activation.

However, this process should not occur before an injury occurs, as it can promote the formation of thrombi that can circulate in the blood vessels and block them.

An inhibitory mechanism, dependent on nitric oxide and prostaglandins, prevents platelets from being activated and clumping in the absence of injury.


Related Questions

I failed a test miserably(33%.) Which makes me feel disgusting. To make it worse, I have 75% in the class. I feel like a failure. I have no idea what my grade will be after, and I don't want to know. I also know for a fact that my relationship with my relationships will plummet severely, they are usually strict on grades. I hate to be the person on the internet that creates sob stories and says "I'm quite sad." But I need to get it said. May anyone help me through this, maybe give me ideas on how I can improve my grade, relationship, or how to feel better?
Thanks.

Answers

Answer: check my comment

Explanation: “

Try to study more, or watch videos on how to do a topic... to improve your relationship (with whom?) if just say to be open & communicate, don’t assume & such... as for feeling better, just know no matter how you feel there’s better days ahead, so be sad now, glow up tm, or days after that. May God bless you.

help me answer this please please please

Answers

Answer:

A

Explanation:

Because it has mentioned that the best players do not win every game which helps to even accept our lose and be happy for others progress.

A maybe the biggest lesson kids learned the skills

Which component of exercise primarily strengthens your heart? Does anyone know ??

Answers

Answer:

Cardiorespiratory endurance

Explanation:

Without a multiple choice to choose from, this is the best answer I have for you.

Cardiorespiratory endurance strengthens your heart a ton. Simple vigerous exercises such as running, jumping jacks, etc. are very beneficial to your heart. Think about it, if you go on a half mile run everyday for a week, the next week your body has the endurance it needs to run the extra mile, (see what I did there?) Anyway, in my opinion Cardiorespiratory endurance would benefit the heart the most out of the Five Fitness Components.

Let me know if I helped! Have a lovely rest of your day.

Answer:

cardio

Explanation:

Vitamins that are stored in the body for a longer period of time are called...

Answers

Answer: The fat-soluble vitamins

Explanation: The fat-soluble vitamins are vitamins that are stored in the body for long periods of time. These vitamins can present a high level of toxicity when consumed in excess.

Which of the following statements is most accurate regarding the maintenance of strength?

Answers

Answer:

do you have the statements?

Explanation:

What technique best describes correct technique for measuring height and weight

Answers

Answer:

Which of the following describes correct technique for measuring height and weight? Read the weight when the balance bar is centered between the upper and lower guides.

Explanation:

Let me know ASAP please

Answers

it is possible to be sodium-deficient if you overexert yourself and lose excessive amounts of sodium in sweat. You can also drive your sodium levels down by drinking too much water and diluting the concentration of sodium in your body.

Both of these things can lead to a potentially dangerous condition known as hyponatremia. With hyponatremia, the extreme loss of sodium can trigger symptoms ranging from muscle cramps, nausea, vomiting, and dizziness to shock, coma, and death.

So I would say heat cramps, but I'm not too sure.

helppp! i need it admittedly lol
Explain the role that heredity plays in skill-related fitness.

Answers

Answer: Skill-related fitness is very modestly heritable. Being good at a certain skill is mostly due to sheer amount of practice and just devoting a lot of time, hours, and concentration towards one subject. While some people certainly exhibit greater talent due to a higher heritability quotient, this is not necessarily the case.

Explanation:  Hope this helps!!!!!

Answer:

Explain the role that heredity plays in skill-related fitness. Heredity controls some aspects of inborn skill-related fitness and is described as natural ability. ... Agility, balance, and coordination each refer to different fitness skills. Agility refers to the ability of executing rapid changes in any direction.

Explanation:

Hope this helps! Please consider marking brainliest <3

what is the most common substance being abused in your barangay and what are its effect​

Answers

Weed

Marijuana is the most common substance abused and is mostly used by touts. This hard drug makes local touts dependent on it and soon enough, they start demanding money from everyone they see

NAME THE 3 STAGES OF ALCOHOLISM.

Answers

Answer:

tipsy,drunk and sober

Explanation:

Answer:

Denial, Loss of control, Emotional and Physical Deterioration

Explanation:

Denial is occasional drinking to relieve stress or the problem.

Loss of Control is the desire to drink more intense.

Emotional and Physical Deterioration is an obsession with drinking and depression.

Which of the following best describes the hospital information system (HIS)?
A. A system that manages storage and collection of nursing
documentation, care planning, administrative information
B. A system that assists in the management of paper records and
required statistical reporting for the Medical Records Personnel
C. A system that manages patient scheduling, patient hospital
census (admission, discharge, and transfer,) as well as billing
D. A system that holds information on every patient registered at a
health care facility

Answers

Answer:

I think the answer is C . A system that manages patient scheduling, patient hospital

Answer:

c

Explanation:

When would dialysis be necessary? A. When a patient experiences kidney failure о B. When a patient experiences chronic obstructive pulmonary diseuse C. When a patient experiences high blood pressure D. When a patient expereinces cardiovascular disease​

Answers

Answer:

Yes

Explanation:

are produced by bacteria, fungi, algae, and plants.

Answer: A. When a patient experiences kidney failure

Explanation: took the quiz

what is the balance after checking 304 is entered
a. $242.50
b. $15.00
c. -$33.00
d. $158.53

Answers

Answer:

Pretty sure it's C. -$33.00.

Explanation:

The measure of how well your heart gets oxygen-rich blood to your
muscles while you're exercising is called _______ fitness.

cardiovascular

anaerobic

aerobic

endurance

Answers

It is called aerobic fitness (which is the answer to your question)

PLEASE HELPPPP name 5 ways being drunk can affect your behavior.

Answers

Poor judgment
slowed breathing and heart rate.
vision impaired.
drowsiness.
loss of balance.

Which of the following can increase your energy levels?
A. Getting better sleep
B. Reading for an hour each day.
C. Spending plenty of time with your friends and family.
D. Getting schoolwork done early in the day

Answers

Answer:

C

Explanation:

Eating healthful, energy-rich foods can help boost energy levels. A diet rich in fruits, vegetables, lean protein, and whole grains will provide plenty of healthy energy. Physical activity increases hormone levels, including testosterone and adrenalin, which will give a person a boost of energy.

LIST 5 COMMON REASONS SOME TEENS CHOOSE TO DRINK

Answers

Answer:

Experimenting , stress/to feel good , to start to feel more grown up (as with sex, drugs or smoking) , peer pressure , to try and fit in, rebellion , popular media , self medication or boredom

Explanation:

Which term describes when a person who took pain medicine now feels nauseous?

A.drug interaction
B.antibiotic resistance
C.tolerance
D.side effect

Answers

D side effect

Hope this helppssss
That would be a side effect

Which of the following statements regarding cognitive development is false?

Parents who reason openly with children can limit a child’s cognitive ability.

An educational environment that encourages children to explain personal thoughts generally improves cognitive ability.

Opportunities to reflect on prior knowledge often increases cognitive development.

Lack of opportunity to explore one’s environment can limit one’s reasoning.

Answers

Answer:

The false statement is - option A. Parents who reason openly with children can limit a child’s cognitive ability.

Explanation:

Cognitive development is the ability of an individual how they think, perceive, and gains knowledge of their world or surrounding by the factors that acuire and learned genetically.

It includes parents who openly with children develops the cognitive ability. education that provides condition that allow to share personal thoughts helps in deveolpment of cognitive behaviour. Oppurtunity help in problem solving develops cognitive ability.

Answer:

A

Explanation:

Alcohol Can cause.
A.Tolerance
B.Addiction
C.Hallucinations
D.Withdrawal

Answers

Answer:

B:Addiction

Explanation:

Alcohol has properties in it that make it easy to get addicted to and people use it unsafely.

The answer is B. it can cause addiction.

What is true about the placenta?

a. It is formed from the endometrium and the chorion.
b. All of the above
c. It is the name of the uterus during the second and third trimesters of pregnancy.
d. It is formed from the myometrium and the corpus luteum.

Answers

Answer:

The answer is C because of the same reason as above

Select the correct answer.
Ben met with an accident where he injured his penis. Which procedure will help repair his penis?
A.
phallopexy
B.
phallectomy
C.
phalloplasty
D.
phallation

Answers

C. Is the correct choice. Answer: Phalloplasty

Answer:

The correct answer is phalloplasty.

I got this right on a test. I hope this helps!

What is wood harvested from Haiti’s forests principally being used for?
a.
building material
b.
furniture
c.
charcoal
d.
decoration

Answers

The answer is c. Charcoal

Haiti forest is in Haiti, a Caribbean country in North America. The forest has experienced deforestation as its wood is used for making charcoal. Thus, option c is correct.

What is deforestation?

Deforestation is cutting and destroying a large number of trees in an area. It leads to serious environmental harm like soil erosion, flood, drought, etc. Haiti's forest is suffering from deforestation.

Haiti has been destroyed and had suffered from a great loss of trees as the woods from the forest are used to make charcoal. The trees are cut down in mass numbers for the timber and logs to make the coal which had led to the destruction of the forest.

Deforestation in Haiti has caused a change in the climatic conditions as there is less rain and high temperature due to the lack of trees. It has caused the soil to drought and caused habitat damage to many species.

Therefore, the woods are used to make charcoal.

Learn more about Haiti forest here:

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what is the action for sally mcpherson

Answers

Answer:

Sally Mcpherson's earned her bachelor’s degree and a doctorate in nursing from the University of Washington and became a board-certified family nurse practitioner in 2016.

Her goal as a family nurse practitioner is to partner with her patients and empower them to take charge of their health and well-being. She is passionate about preventative care and promoting wellness across all stages of life.

Explanation:

Which sentence describes a security professional's role?

OA The security professional works with other healthcare professionals to help patients during emergencies.

O B. The security professional takes responsibility for keeping equipment and spaces clean.

O C. The security professional organizes, maintains, and protects patient data for the rest of team.

OD. The security professional ensures that unauthorized people do not enter the healthcare facility.​

Answers

Answer: C. The security professional organizes, maintains, and protects patient data for the rest of the team.

Explanation:

The security professional is protecting the patient's data for the rest of the team and his job is to have good organizational, communication, and technical skills in order to protect the data and secure everything about the patient.

Other answers from your question are incorrect.

A) This is not the job for the security professional, it is a job for doctors and nurses.

B) This is the job of a cleaner in that facility.

D) This is the job of the ones who are protecting the facility.

Which term describes when a person who took pain medicine now feels nauseous?

A.drug interaction
B.antibiotic resistance
C.tolerance
D.side effect

Answers

The answer is D. Side effect

Answer:

D

Explanation:

Side effects.

Hope this helps ✌

Why should you sort mail into categories before presenting it to the executive?

Answers

ANSWER:

You should sort mail into categories before presenting it to be executive because you can put the mail in the order of importance.

Explanation:

Individuals should sort mail into categories before presenting it to the executive so that individuals can prioritize it.

What are mails?

Something sent or returned by mail, such as a survey or ballot.

The system for sending letters, packages, and other items: a country's postal system packages sent via the mails.

Email is sent and received over the Internet or other computer networks. The mail, also known as the post, is a system for physically transporting documents and other small packages, as well as a term for postcards, letters, and parcels. It sends and receives messages using an electronic address.

One should sort the mail into categories as it can aid in a proper presentation by sorting the important ones first. So it will be attractive to the executive.

Thus, it should be mandatory to sort mail before submitting.

For more details regarding email, visit:

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Emily is creating a checklist on avoiding chemical contamination of food for her catering staff. Which two points should she include on the checklist?

1.Make sure to wash hands with warm water before preparing food.
2. Do not spray sanitizers in the kitchen when food is being prepared.
3. Do not prepare food without wearing hair nets.
4.Do not store cleaning liquids near food prep areas.
5. Discard food if you find any foreign objects in it while prepping.

Answers

Number 2 and 4 is very important

PLEASE HELP ME THIS ASSIGNMENT IS DUE Soon

WHAT IS BLOOD ALCOHOL CONCENTRATION? WHAT NUMBER IS LEGALLY DRUNK? WHAT NUMBER CAN KILL YOU?

Answers

Answer:

blood alcohol content/concentration is a measurement of alcohol intoxication used for legal or medical purposes.

ALOT OF POINT MARKING POEPLW AS BRAINLIST

Research how fractures are repaired surgically

Answers

Answer: Bone fracture surgical repair is performed when a broken bone can't heal properly with casting, splinting or bracing alone. The most common type of fracture surgery involves internal fixation, where broken pieces of bone are placed back in the right position using surgical screws, pins, rods, or plates.

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