Arthrodesis is the medical term for the surgical fusion of two bones to stiffen a joint such as an ankle, elbow or shoulder. It is performed to relieve pain in a joint that hasn't responded well to other treatments, or to correct a deformity or stabilize a joint. The bones are fixed together until they fuse into one solid bone.
Explanation:The surgical fusion, or joining together of two bones to stiffen a joint, such as an ankle, elbow or shoulder, is known as arthrodesis. This procedure is typically used to relieve pain in a joint which hasn't responded well to other types of treatment. It can also be used to correct a deformity or stabilize a joint. During arthrodesis, the surgeon removes the articular cartilage on the surfaces of the two bones that create the joint. Once the bones are exposed, they are then fixed together using pins, screws, or plates until they fuse together and become one solid bone.
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which organ is found in the left, upper quadrant of the abdomen and secretes digestive enzymes, insulin, and glucagon
Question delineates the parameters of the study and the degree of depth that will be need.
Compare and contrast solutions and suspension and give a common example of each type of mixture.
Hey there!
Compare and contrast solutions and suspension
Solutions are mixtures in which the components are evenly distributed throughout. A suspension is a mixture of water and undissolved materials that do not settle out . An example of a solution is the salt dissolved in water. An example of a suspension is a non fat milk.
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Tobey
An organism that produces catalase enzyme is protected from the harmful effects of
Two different species can occupy the same _____, but each will have its own _____.
Answer: 1. Habitat
2. Niche
Explanation:
Two different species can have a same habitat. An habitat is a place where an organism survive and completes it's life cycle. But they cannot have the same niche. A niche is the functional role that an organism plays in it's habitat. Like the way it derives it's food, choice of mating season, and others.
According to competition exclusion principle if the two different species occupy the same niche. The one which is more competitive and superior over the other derives all the resources. Thus the inferior species is excluded from the environment or occupied area.
Biodiversity enhances ________ because it provides genetic diversity and the potential for developing more productive food crops that are disease resistant and adaptive to drought.
Veins returning to the heart can close to prevent the backflow of blood. Which component in the veins contributes to this process?
Final answer:
The one-way valves in veins prevent backflow of blood, ensuring unidirectional flow toward the heart and are aided by muscle contractions and venoconstriction.
Explanation:
The component in the veins that prevents the backflow of blood is the one-way valves. These valves ensure blood flows in only one direction toward the heart, even when the pressure within the veins is low, especially after blood has passed through the capillaries. The valves are crucial because muscular contractions can increase pressure within the veins, potentially pushing blood in the wrong direction. Instead, the valves close and prevent backflow, allowing for the unidirectional flow of blood. The action of muscle contractions, especially those of the skeletal muscles, helps push blood through these valves, aiding venous return to the heart, in a mechanism sometimes described as the skeletal muscle pump. Additionally, maintaining vascular tone through venoconstriction enhances blood flow, preventing veins from excessively distending.
You are given a clear solution of KNO3. Using 3 – 4 sentences (in your own words) explain how you would determine if the solution is unsaturated, saturated or supersaturated.
What reaction prevents more than one sperm from binding to an oocyte during fertilization?
Final answer:
The reaction preventing more than one sperm from binding to an oocyte during fertilization is composed of a fast block altering the membrane potential and a slow block changing the membrane structure to release proteins that inhibit additional sperm fusion.
Explanation:
The reaction that prevents more than one sperm from binding to an oocyte during fertilization involves two key mechanisms activated by the oocyte. Once the first sperm fuses with the oocyte, a fast block to polyspermy occurs, in which the membrane potential of the oocyte alters quickly, often called a "wave of negativity." Subsequently, a slow block follows, involving a change in the membrane structure itself, which releases proteins that prevent other sperms from fusing with the oocyte. These blocks are essential; without them, polyspermy could occur, leading to a nonviable embryo due to having an incompatible triple set of chromosomes.
Which of the following is NOT a source of water pollution?
discharges of sediment
industry waste
city sewage
none of the above
In what surgery subsection would you find the code for the incision and drainage of a nasal abscess using an external approach to the abscess?
Final answer:
The code for the incision and drainage of a nasal abscess using an external approach can be found in the Otorhinolaryngology (ENT) surgery subsection under nasal procedures.
Explanation:
The code for the incision and drainage of a nasal abscess using an external approach to the abscess can be found in the surgery subsection of Otorhinolaryngology (Ear, Nose, and Throat). Specifically, it falls under the category of nasal procedures. In the Current Procedural Terminology (CPT) coding system, this procedure is usually identified by the code range 30100-30999.
To perform the incision and drainage, the surgeon makes an external incision on the skin near the abscess and then drains the accumulated pus or fluid. This procedure helps relieve the pressure and infection caused by the abscess.
Which type of vaccine involves stimulation of b cells without the assistance of t helper cells?
Answer:
The vaccine that support stimulation of B cells without depending on T helper cells are called Polysaccharide vaccines.
Polysaccharide vaccines are defined as a inactivated subunit vaccine made up of long sugar chains that make the surface capsule of some bacteria. There are three main diseases for which pure polysaccharide vaccines are available that includes meningococcal disease, pneumococcal disease, and Salmonella Typhi.
Sections of dna within a gene that do not encode part of the protein that the gene produces are called :
Scientists often use fruit flies as a method to test hypotheses about human genes. Why are fruit flies advantageous in the study of human inheritance?
Answer:
Fruit fly or Drosophila melanogaster is one of the most well understood model organism. It is used extensively in scientific research, specially human genetics due to following reasons:
Drosophila and humans share almost 75% of genesDrosophila's reproduction cycle is only of 8-14 days so many generations can be observed in a short amount of timeThey are small and hence do not require a lot of spaceTheir maintenance is easy and cheapIt is a well studied model organism so a lot of information is available about themIt is easy to mutate Drosophila genes.
Dogs are more sensitive to smells than humans because _____.
a. dogs tend to be microsmatic
b. humans have more olfactory receptors than dogs
c. dogs have many more olfactory receptors than humans
d. each individual olfactory receptor is more sensitive in dogs than in humans
Dogs have many more olfactory receptors than humans therefore they are more sensitive to smells.
Why do dogs use olfactory receptors?The ability of dogs to smell is essential for them to be able to recognize individuals, gather significant information about their surroundings, come to decisions, and learn new things. It is extraordinarily specialized and sensitive, especially in comparison to the human sense of smell.
Dogs devote a significant portion of their mental capacity to analyzing odors. They have more than 100 million sensory receptor sites in the nasal cavity, compared to 6 million in people, and the area of the canine brain that is dedicated to analyzing odors is approximately 40 times larger than the comparable part of the human brain. This is because dogs have a larger nasal cavity than humans do.
Therefore, dogs are more sensitive to smells than humans.
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Which is the role of the gallbladder
The role of the gallbladder is to store the liquid produced by the liver.
Which example describes animals living in a social hierarchy
Answer:
2. a worker bee defends the hive while the queen bee lays eggs
4. a prairie dog barks to alert family members when it spots a predator
Explanation:
i just did the test on edg. your welcome
The two ions that are responsible for the initial depolarization of cardiac muscle as they travel from the outside of a muscle cell to the inside of the cell are _______ ions.
What allows seed plants to carry out long distance reproduction?
Seed plants can carry out long-distance reproduction primarily due to the development of seeds.
Seeds are highly specialized structures that encase and protect the embryo, along with a supply of stored nutrients, within a tough outer coat.
This adaptation allows seed plants to disperse their offspring far from the parent plant. Various mechanisms aid in seed dispersal, such as wind, water, animals, or even explosive mechanisms in some cases.
The ability of seeds to withstand harsh conditions and remain dormant for extended periods enables them to travel long distances and establish new populations, increasing their chances of survival and successful reproduction in diverse environments.
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Roly-poly bugs will move around in no particular direction until they find a suitable moist spot this kind of random movement in animals is known as what
Answer:
Kinesis
Explanation:
Innate behaviours are behaviours that occur naturally in animals in response to external stimuli. These reflexes, taxis and kinesis.
Reflex actions are actions that occur involuntarily in response to external stimuli.
Kinesis is a non directional movement of organisms in response to external stimuli.
Taxis is a directional movement of organisms in response to external stimuli. It could be towards the stimuli or away from it.
In this case, the roly-poly bugs move aound in no direction until they find a suitable moist spot. This is certainly a kinesis.
A scientific theory _____.
1.is an attempt to explain how or why things happen in the manner observed
2.is the scientific community’s best explanation for certain observable facts 3.describes an observed pattern in nature without attempting to explain it
Answer:
2. Is the scientific community's best explanation for certain observable facts
"during which phase of mitosis does the nuclear membrane dissolve completely and the chromatid pairs arrange themselves in a single file?"
The answer is metaphase. It is marked by the arrangement of chromosomes at the center of the cell, half way between each of the mitoic spindle poles. Movement is intermediated by the kinetochore microtubles, which push and pull on the chromosomes to align them into what is called the metaphase plate. The chromosomes on the metaphase plate are held there firmly by pushing and pulling forces from the microtubules. Cells can stop in metaphase for days until the chromosomes are properly aligned and the cell go in anaphase.
The prophase of mitosis is the phase in which the nuclear membrane dissolves completely and the chromatid pairs arrange themselves in a single line. This prepares them for segregation during metaphase.
Explanation:The phase of mitosis you're referring to, in which the nuclear membrane dissolves completely and the chromatid pairs arrange themselves in a single file, is the prophase. During prophase, the nuclear membrane breaks apart and the chromatids congregate at the center of the cell. They become organized in a structure known as the mitotic spindle, which will help separate the chromatids in a subsequent phase, metaphase. This is a crucial step in the cell division process which ensures the correct distribution of genetic material to the two daughter cells.
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What do paleontologists use to determine the actual age of rocks? A.) Biogeography B.) Radioactive dating C.) Geologic time scale D.) Relative age
Telemedicine and remote monitoring are part of a _____ _____ trend.
Telemedicine and remote monitoring are part of a digital healthcare trend. This trend, also including the sharing of digital records and a-chip technology, aims to improve healthcare quality and efficiency. These advances have resulted from an increase in demand from an aging population and improvements in technology.
Explanation:This trend is driven by advances in technology like a-chip technology and the increase of home medical tests. The digital healthcare trend also includes the sharing of digital records among health providers, aiming to improve the quality and reduce the cost of health care.
Healthcare has undergone many changes in recent times. In addition to the adoption of remote monitoring and telemedicine, there have been systemic changes like hospital mergers to improve efficiency, the rise of urgent care offices and other types of healthcare professionals, and the implementation of insurance mandates and artificial intelligence to complement and streamline healthcare processes.
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During a routine physical examination, a 65 year-old male patient tells the physician, "i get up several times during the night to urinate." based on this symptom, the physician suspects that the patient may have:
Based on the given symptoms of the patient of having to urinate frequently at night, it is probably the patient has an enlarged prostate gland or has an infection of the bladder or urinary tract as this problem causes a person to urinate frequently during the evening. It will make the person’s sleeping time to be disrupted as frequently urinating has the tendency of waking a person in order to urinate.
Based on the symptom of nocturnal urination, the patient may have an enlarged prostate or a urinary tract infection, which are common in older men. The doctor will likely perform diagnostic tests to identify the underlying cause of the urinary frequency.
The symptom of getting up several times during the night to urinate suggests that the physician may suspect that the patient has an enlarged prostate or a urinary tract infection (UTI). Both conditions are common in older men. An enlarged prostate can squeeze the urethra and make it difficult to completely empty the bladder, leading to frequent urination, especially at night. A UTI in older adults can be indicated by symptoms like a fever, pain during urination, and increased frequency of urination.
Moreover, UTIs can cause a notable decline in mental function in elderly patients. The physician's approach to monitoring fluid intake and ordering a urine culture is aimed at confirming the presence and identifying the causative agent of a possible infection.
A 38-year-old client attends the prenatal clinic for the first time. a nurse explains that several tests will be performed, one of which is the serum alpha-fetoprotein test. the client asks what the test will reveal. what should the nurse include in the reply?
What are the three particles of an atom
i think the answer is D ...
According to computer models, most coastal areas will experience what effect of global warming?
increased flooding
decreased temperatures
increased crop production
decreased precipitation
If your on GradPoint or NovaNet,
your answer would be (A) increased flooding.
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An unconformity is _____.
a layer of sedimentary rocks
an intrusion
a layer of rocks with unusual fossils
a gap in the rock record