Answer:
1. Xét nghiệm yếu tố đông máu để làm gì?
Để đánh giá khả năng đông máu như thế nào và quá trình đông máu kéo dài trong thời gian bao lâu, các bác sĩ sẽ tiến hành xét nghiệm các yếu tố đông máu.
Quá trình đông máu sẽ bảo vệ cơ thể bạn khi bị chảy máu. Tuy nhiên, nếu một cục máu đông hình thành trong tĩnh mạch bình thường thì đây là điều hết sức nguy hiểm vì có thể khiến cho dòng máu bị chặn đến tim, não, phổi.
Khi thực hiện xét nghiệm các yếu tố đông máu, sẽ biết được nguy cơ bạn bị chảy máu quá nhiều khi bị thương hay không hoặc có nguy cơ bị đột quỵ không.
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2. Các yếu tố đông máu gồm những gì?
Fibrinogen
Fibrinogen là yếu tố ảnh hưởng lớn đến quá trình đông máu
Sau đây là các yếu tố ảnh hưởng đến quá trình đông máu:
I - Fibrinogen: Fibrinogen là huyết tương có trọng lượng phân tử là 340.000, hòa tan được. Yếu tố này có mặt trong huyết tương với nồng độ là từ 100-700mg/ 100mL. Đa số Fibrinogen được tạo ra ở gan, vì thế đối với những bệnh nhân bị bệnh gan thì lượng Fibrinogen giảm trong máu tuần hoàn, sự đông máu bị ngăn cản.
II- Prothrombin: Prothrombin là protein huyết tương có trọng lượng phân tử là 68.700, có mặt trong huyết tương với nồng độ là 15mg/100mL. Gan sản xuất Prothrombin liên tục, chính vì vậy nếu gan bị suy yếu, lượng prothrombin sẽ giảm, gây ức chế sự đông máu.
III- Thromboplastin mô: Yếu tố này tham gia vào cơ chế đông máu ngoại sinh, thay thế phospholipid tiểu cầu và các yếu tố huyết tương. Bên cạnh đó, thromboplastin còn có tác dụng chống nhiễm khuẩn.
IV- Ca++: Quá trình đông máu không thể không có mặt của loại ion này.
V- Proaccelerin: Khi có nhiều ion Ca++ thì yếu tố này mất hoạt tính. Khi không có proaccelerin, người ta điều chế huyết tương bằng cách để lâu huyết tương lấy từ máu chống đông với oxalat.
VII- Proconvertin: Trọng lượng phân tử của yếu tố này là 60.000. Hoạt tính của yếu tố này trong huyết tương sẽ bị giữ lại trên màng lọc amiang;
VIII- Antihemophilic A: Để tổng hợp yếu tố này, phụ thuộc vào rất nhiều gen trong các nhiễm sắc thể khác nhau. Thường thì antihemophilic được tổng hợp chủ yếu từ gan, lá lách và hệ thống võng nội mô. Khi thiếu ion Ca++ thì yếu tố này mất hoạt tính. Đây là yếu tố chống huyết hữu B;
IX- Antihemophilic B: Chống huyết hữu A.
X- Stuart: Stuart có trong huyết tương, ở dưới dạng không hoạt động. Trong quá trình đông máu nội sinh có sự tham gia của yếu tố này. Khi cho thromboplastin mô vào quá trình đông máu ngoại sinh, sẽ không còn yếu tố stuart.
XI- Plasma Thromboplastin Antecedent (PTA): Quá trình khởi phát đông máu nội sinh không thể thiếu yếu tố PTA.
XII- Hageman: Động lực để tạo thành một loạt phản ứng dẫn đến đông máu là sự tiếp xúc giữa yếu tố XII với mặt trong mạch máu tổn thương cùng sự có mặt của phospholipid tiểu cầu. Bên cạnh chức năng hoạt hóa hệ đông máu, Hageman còn hoạt hóa hệ đông máu, hệ bổ thể và hệ chống đông.
XIII - Fibrin Stabilizing Factor ( FSF): yếu tố này có hoạt tính bền vững trong huyết tương, ổn định fibrin.
Explanation:
how environmental factors can affect genetics
Answer:
Situational Genetics
Explanation:
The envirnment can control and manipulate species' genes through adaptation. An example of this is horse's teeth building resielnce to grind grass. In order to eat comfortably, horse prefer smushing their food. Over time, they have adapted to the environment by strengthening their teeth.
What is photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Someone can do this please
I am here to give the brainiest answer not to get points
Answer: yes
which fish is born in fresh water but spawns in salt water?
Answer:
anadromous fish is born in fish water and spwan in salt water
what do cecilias represent in the language of flowers?
Answer:
From Sharp (Mercenary) in Starsnatch Cliff. In the language of the flowers, the meaning of the Cecilia is "The truest feelings of the prodigal son"
Explanation:
The Cecilia's represent in the language of flowers is true feeling of the prodigal son.
What is Cecilia's?The word Cecilia is of Latin origin meaning "blind" being the feminine form of Cecilia, which was derived from the name of a Roman clan belonging to the Latin cacus, also meaning "blind". This is the popularized by Saint Cecilia, who is the third century Roman martyr and the patron saint of music.
Saint Cecilia who is the patron saint of musicians sits calmly at a table holding the palm that symbolizes her martyrdom – in one hand and a sheet of music in the other. This represent that true feeling of the prodigal son in terms of language of flowers
Thus, the Cecilia's represent in the language of flowers is true feeling of the prodigal son.
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Which paired structures of the male reproductive system lie at the base of the bladder and connect to the vas deferens via a duct
Which statement is a hypothesis?
A. If an earthworm is given a choice, it will move toward darkness rather than light.
B. The earthworms must all be the same species.
C. Do earthworms prefer bright light or darkness?
D. Most of the earthworms moved to the shaded area during the experiment.
Answer:
it answer A because of if.
Which is the odd
one? Explain.
A. RR
B. Rr
C. Aa
D. aa
Answer:
d aa its not capitalized like the other ones
Explanation:
How many codons are needed for 3 amino acids?
Answer:
3 codons are needed for 3 amino acids
which mechanism of action is being described when an antibiotic drug causes the destruction of bacterial cell walls
The mechanism of action described when an antibiotic drug causes the destruction of bacterial cell walls is NONSELECTIVE INTERACTION. These drugs do not interact with specific molecules.
Nonselective drugs are involved in nonselective interactions, i.e., they act on a variety of receptors and/or enzymes.
Nonselective drugs can target different cellular structures (e.g., bacterial cell walls) and/or metabolic processes.
For example, Phenocybenzamine is a nonselective drug that can affect different receptors, which is used for the treatment of high blood pressure and sweating associated with pheochromocytoma.
Conversely, enzymes are biological catalysts that speed up chemical reactions by selectively interacting with specific ligands (i.e., substrates).
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Time differences are detected by specialized neurons called coincidence detectors, while intensity differences are detected by a phenomenon called ______.
Answer:
Sound Shadow
Explanation:
the process that continually adds new material to the ocean floor
Answer:
Sea-floor spreading i think not a 100 percent.
Explanation:
Asexual reproduction __________. View Available Hint(s)for Part A produces offspring genetically identical to the parent requires both meiosis and mitosis leads to a loss of genetic material is limited to plants is limited to single-cell organisms
Answer:
produces offspring genetically identical to the parent
Explanation:
List in order what an athlete does when she bl00d d0pes.
1. She chills the bl00d and stores it.
2. She puts the bl00d back into her body just before a competition.
3. She removes the bl00d from her body.
In mitosis, the nuclear envelope must first break down so the duplicated DNA can segregate into separate daughter cells. Which phase does this happen
which hormone increases acid secretion by the stomach?
Answer:
gastrin
Explanation:
During meal ingestion, the main hormone responsible for stimulating acid secretion is gastrin, which acts primarily by releasing histamine from enterochromaffin-like cells.
what was life like for the native americans after they were relocated west to indian territory
hmmm what is it mhmhmhmm
During photosynthesis, from where does the energy for converting carbon dioxide into sugar come?
Answer:
Solar energy is converted to chemical energy in the photosynthesis process, which converts water and carbon dioxide to glucose.
Explanation:
Hope this helps!
During photosynthesis, the energy for converting carbon dioxide into sugar comes from the sun, it is solar energy.
What is photosynthesis?Photosynthesis, the method used by plants and other autotrophic organisms to make food, converts carbon dioxide into glucose and oxygen, both of which are vital for life.
Photosynthesis in plants uses the green pigment chlorophyll and produces oxygen as a byproduct. Plants use their leaves to trap light energy during photosynthesis.
Plants use the sun's energy to convert water and carbon dioxide into glucose, a sugar. Plants use glucose for energy and to generate other compounds such as cellulose and starch.
Therefore, the energy used to convert carbon dioxide into sugar comes from the sun during photosynthesis; this is known as solar energy.
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I NEED HELP IDENTIFYING THE STEPS OF MITOSIS!!! PLZ HELP THIS IS DUE TODAY
Answer: phases are prophase, prometaphase, metaphase, anaphase, and telophase
Explanation: i hope this helped
Sedimentation accumulation found in bodies of water can be the result of _______. A. Fertilizer runoff b. Pesticides and herbicides c. Erosion from agricultural practices d. All of the above.
Answer:
All of the above.
Explanation:
All of these can contribute to sediment accumilation in bodies of water.
Sedimentation accumulation found in water bodies can be the result of fertilizer runoff, pesticides, pesticides, and erosion from agricultural practices. So, the correct option is D.
What do you mean by Sedimentation accumulation?The sedimentation accumulation may be defined as a process of gathering sediments into the rocks, and water bodies, and increasing their actual mass.
Sedimentation accumulation may be carried by the runoff of fertilizers, pesticides, and insecticides. It also occurred due to the process of soil erosion that takes place during agricultural practices.
Therefore, the correct option for this question is D.
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how much milk does the average cow produce each day
Answer:
6-7 gal
Explanation:
STATISTICS B)
PLEASE HELP ANY ANSWER WILL DO PLEASEEEE PLEASE
Draw a tree diagram for the dichotomous key that you used for the aliens.
Answer:
Explanation:
PLEASE HELP QUICKLY!!!!!!!!!!!!!!
Which of the following best describes how you know the matter that makes up the sequoia tree comes from your answer in the previous question.
A. All the energy comes from the sun, so it would make sense that any matter we get would also come ultimately from the sun. Without the sun, no photosynthesis would happen
B. Water and carbon dioxide supply us with the matter and they are the inputs for photosynthesis, and everything starts with photosynthesis
C. Our bodies are made of over 90% water, so we essentially are water which is an input for photosynthesis
D. We are made of carbon-based molecules and that carbon needs to come from somewhere, so the carbon comes from the glucose we eat which came from the carbon dioxide.
E. Glucose is eaten by us which is then used to build oxygen and carbon dioxide molecules that will get released back into the air. We are able to make air which is an example of matter/mass in our biosphere
I know it's either D or E
Answer:
D
Explanation:
My intuition told me so
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Which statement is true? (1 point)
O Mendelian traits cannot be shown on a bell curve.
O Hair color and IQ are examples of Mendelian traits.
Mendelian traits are controlled by multiple genes.
O Mendelian traits follows a normal distribution.
Answer:b
Explanation:
white blood cells that circulate in the bloodstream and are an important part of the body’s immune system are called ________.
Answer:
Lymphocytes
Explanation:
A lymphocyte is a type of white blood cell that is part of the immune system. There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins. The T cells destroy the body's own cells that have themselves been taken over by viruses or become cancerous.
In eukaryotic mRNA, the parts that remain after processing and are translated into amino acid sequences are called the _____.
Answer:
Exons.
Explanation:
In mRNA maturation and processing, a complex called a splicesome essentially "cuts out", if you will, non-coding parts of the DNA sequence to be translated. The parts that are cut out are called "introns", and the parts that are left over that code for a protein sequence, are called "exons". Careful with the terminology. It seems counterintuitive that exons are the ones that stay (exon = exit? NO.) and introns (in, as in, stays in? NO.) are the ones that are cut out of the mature mRNA. Perhaps you can remember that the terms seem to be the opposite, that's how I remember it. Alright, good luck with all of this.
Definition of Genetic Engineering
Answer:
Genetic engineering is the process of altering or modifying the DNA in an organism’s genome.
Answer:
Genetic engineering, also called genetic modification or genetic manipulation, is the direct manipulation of an organism's genes using biotechnology
What are S-strain and R-strain bacteria?
Answer:
When Frederick Griffith discovered two strains of Streptococci in 1923, the bacteriologists were intrigued by the differences between them: the S (smooth) strain, which produces colonies that are smooth and shiny on a lab plate; the R (rough) strain, which lacks a polysaccharide coat and produces colonies that are rough and irregular on a lab plate.
Explanation:
by moving substances into and out of cells,_____, the process of keeping stable conditions inside a cell, is maintained
Answer:
love you quieres ser mi novio
Answer:
Homeostasis
Explanation:
This process maintains sugar, salt nutrients and other substances within a certain range to maintain safety
How is glucose stored in skeletal muscle? Why cannot glucose be released from skeletal muscles to maintain blood glucose concentration?
Answer:
In skeletal muscles with low glycogen, glucose will be stored as muscles glycogen.
Skeletal muscles are unable to release glucose because muscles lack glucose 6 phosphatase. Also, muscles glycogen is mainly a local energy substrate for exercise, rather than an energy source to maintain glucose concentration during fasting.