1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
S_A_V [24]
3 years ago
14

Which of these describes a quantitative observation?

Biology
1 answer:
Sergio [31]3 years ago
3 0

Answer: <u><em>D. An observation that has a number associated with it</em></u>

Explanation: The answer is D. An observation that has a number associated with it. I would explain further, but it is pretty self explanatory.

<em>Good luck!</em>

You might be interested in
A nurse recalls that the blockage of dopamine by antipsychotic drugs can cause extrapyramidal side effects such as akathisia. wh
Karo-lina-s [1.5K]
<span>Akathisia is the inability to sit still. People will tend to be uneasy and want to be doing something. They'll be fidgety, looking for something to do with their hands, or be looking to get up and walk around.</span>
5 0
2 years ago
What type and gauge of suture would be used to anastomose a synthetic aortic graft onto an aorta during an abdominal aortic aneu
ikadub [295]

Answer:

Explanation:

There are several approaches and surgical techniques in the reparation of an abdominal aortic aneurysmectomy according to the recent studies. In certain cases, it is recommended to use standard dacron graft with a flexible collar (the collar graft). The other one applies standard dacron graft.

Abdominal aortic aneurysm (AAA) is linked to 1.3% mortality in the male population older than 65-85 years. AAA is defined as the degradation of the elastic media of the previously atheromatous aortic wall. AAA occurs between the aortic hiatus in the diaphragm (T12 vertebra level) and the bifurcation into the common iliac arteries (L4 level). The diameter of the normal aorta varies in the population. In men, it is between 16 to 22 mm.

The most common risk factors for the AAA developing are smoking, male sex, older age, hypertension, hyperlipidemia and previous vascular disease.  

The most common symptoms of AAA are a pain in the abdomen, chest or lower back. The presence of peripheral vascular disease if thrombus formation is present within the aneurysm or mural emboli decrease blood flow to the periphery. In certain individuals, there is a ureteric obstruction due to the compression. The diagnosis is performed by bimanual palpation in the region above the umbilicus. Other diagnostic imaging is necessary most commonly via ultrasound and  CT scan.

Open repair is performed under general anaesthesia. The abdominal cavity is entered via a midline incision, the AAA is detected. Proximal control is provided with the clamp to the aorta (below the renal arteries). The distal control is provided via clamping the common iliac arteries. The aneurysm is opened and any thrombus removed. A graft is anastomosed to either end of the affected region of the aorta. Thus, clamps are removed and blood flow is maintained.

EVAR repair is performed by the stent-graft placement within the aneurysm which requires CT angiography preoperatively. The graft has 2 components, of which both are inserted on catheters under fluoroscopic guidance. EVAR is performed under local anaesthesia with sedation, epidural or spinal block.

The main body of the graft is inserted via the common femoral artery, while the contralateral is then inserted via the other femoral artery. In this way, there is an entirely new lumen for the distal aorta and proximal common iliac arteries.

In the case of an endovascular repair of abdominal aortic aneurysms, total percutaneous access or endovascular aortic aneurysm (EVAR) has been documented. In this approach, the most common material used may be constructed from self-expanding nickel-titanium (nitinol) with polyester graft material. The complications are defined as suture break (separation of adjacent metallic rings) and metal-ring fracture.

The most common postoperative complications are pseudoaneurysm, haematoma,  graft-enteric fistula, suture line disruption.  In case of open abdominal repair, there is always a possibility for a hernia complication and connective tissue disorder.

5 0
3 years ago
Read 2 more answers
The newly-synthesized strand of DNA has exactly the same base sequence as that of its template strand.A) TrueB) False
erastova [34]

Answer:

true

Explanation:

8 0
3 years ago
Which are characteristics of natural selection?
Zarrin [17]

Answer:

-There is a variation in traits.

-The environment cannot support unlimited populations of organisms.

there is heredity.

-The trait that allows the organism to have more offspring will become more common in the population of organisms.

8 0
3 years ago
Which of the following is a good definition for the word adaptation?
Alja [10]

The first one is correct because all of the other definitions give an example of a change in the environment not the animal in question.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Describe the difference between exocrine glands and endocrine glands. list below an example of each and what hormone they releas
    5·1 answer
  • Why is the model used to describe the plasma membrane called the fluid mosaic model?
    15·1 answer
  • Which of the following best describes KINETIC ENERGY? * Stored energy Energy due to movement Electrical energy None of these
    14·2 answers
  • What is the difference between endocytosis and exocytosis?
    12·2 answers
  • How is the energy produced by respiration stored? and where is it stored?
    9·2 answers
  • 8. Describe two ways that hormone imbalances can cause reproductive problems in humans.
    10·1 answer
  • 3. The human body has devised an excellent method to keep the body pH under control. a. What principle underlies the constant pH
    9·1 answer
  • Menutupnya daun pada malam hari,
    10·1 answer
  • Gloria is a devout Seventh-day Adventist who has been working with Nancy, a Catholic therapist. Nancy meets with clients in the
    14·1 answer
  • Once an experiment is complete which of the following is not a step to be taken with the data
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!