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
gayaneshka [121]
3 years ago
7

Write a brief paragraph as to how each condition affects blood flow

Biology
1 answer:
xxTIMURxx [149]3 years ago
5 0

Answer:

Pulse Pressure

As shown in Figure 1, the difference between the systolic pressure and the diastolic pressure is the pulse pressure. For example, an individual with a systolic pressure of 120 mm Hg and a diastolic pressure of 80 mm Hg would have a pulse pressure of 40 mmHg.

Generally, a pulse pressure should be at least 25 percent of the systolic pressure. A pulse pressure below this level is described as low or narrow. This may occur, for example, in patients with a low stroke volume, which may be seen in congestive heart failure, stenosis of the aortic valve, or significant blood loss following trauma. In contrast, a high or wide pulse pressure is common in healthy people following strenuous exercise, when their resting pulse pressure of 30–40 mm Hg may increase temporarily to 100 mm Hg as stroke volume increases. A persistently high pulse pressure at or above 100 mm Hg may indicate excessive resistance in the arteries and can be caused by a variety of disorders. Chronic high resting pulse pressures can degrade the heart, brain, and kidneys, and warrant medical treatment.

Mean Arterial Pressure

Mean arterial pressure (MAP) represents the “average” pressure of blood in the arteries, that is, the average force driving blood into vessels that serve the tissues. Mean is a statistical concept and is calculated by taking the sum of the values divided by the number of values. Although complicated to measure directly and complicated to calculate, MAP can be approximated by adding the diastolic pressure to one-third of the pulse pressure or systolic pressure minus the diastolic pressure:

\displaystyle \text{MAP}=\text{diastolic BP}+\frac{(\text{systolic}-\text{diastolic BP})}{3}MAP=diastolic BP+

​3  

Pulse

After blood is ejected from the heart, elastic fibers in the arteries help maintain a high-pressure gradient as they expand to accommodate the blood, then recoil. This expansion and recoiling effect, known as the pulse, can be palpated manually or measured electronically. Although the effect diminishes over distance from the heart, elements of the systolic and diastolic components of the pulse are still evident down to the level of the arterioles.

This image shows the pulse points in a woman’s body.

Figure 2. The pulse is most readily measured at the radial artery, but can be measured at any of the pulse points shown.

Because pulse indicates heart rate, it is measured clinically to provide clues to a patient’s state of health. It is recorded as beats per minute. Both the rate and the strength of the pulse are important clinically. A high or irregular pulse rate can be caused by physical activity or other temporary factors, but it may also indicate a heart condition. The pulse strength indicates the strength of ventricular contraction and cardiac output. If the pulse is strong, then systolic pressure is high. If it is weak, systolic pressure has fallen, and medical intervention may be warranted.

Pulse can be palpated manually by placing the tips of the fingers across an artery that runs close to the body surface and pressing lightly. While this procedure is normally performed using the radial artery in the wrist or the common carotid artery in the neck, any superficial artery that can be palpated may be used. Common sites to find a pulse include temporal and facial arteries in the head, brachial arteries in the upper arm, femoral arteries in the thigh, popliteal arteries behind the knees, posterior tibial arteries near the medial tarsal regions, and dorsalis pedis arteries in the feet. A variety of commercial electronic devices are also available to measure pulse.

Explanation:

You might be interested in
6. When humans first appear on Earth?
vaieri [72.5K]

Answer:

seven million years ago

Explanation:

6 0
3 years ago
A birds breastbone has a ridge called the ____.
Nataly [62]
The ridge of a birds breastbone is called a keel
6 0
3 years ago
Four different thermometers were used to measure the temperature of a sample of pure boiling water. The measurements are recorde
dolphi86 [110]

Answer:

Its z

Explanation:

3 0
3 years ago
Read 2 more answers
What percentage of the moon as seen from Earth is illuminated during the third quarter phase?
Alex73 [517]

Answer:

50% of the moon is illuminated during a third quarter phase

4 0
3 years ago
Read 2 more answers
Yogurt,cheese, and other foods are produced through alcoholic fermentation. True or false?
gregori [183]
True these are both examples of food produced through alcoholic fermentation
3 0
2 years ago
Read 2 more answers
Other questions:
  • What happens to the mitral and the tricuspid valve when the ventricle contracts
    8·1 answer
  • Actinisphenia elegans is a unicellular, photosynthetic, eukaryotic organism. To which of the following groups does it belong?
    7·1 answer
  • What quantity of carbon dioxide was in the atmosphere in 1980? 317 ppm 326 ppm 339 ppm 371 ppm
    13·2 answers
  • QUESTION 1
    13·1 answer
  • Which describes the process of a bacterial cell dividing to create two daughter cells? binary fission fertilization meiosis game
    7·2 answers
  • how might a carrying capacity of a coastal ecosystem change as the result of a tsunami? Explain using one or more examples
    12·1 answer
  • GORAN<br> NARGO MYSETS<br> OMSRANOG<br> LECL<br> SUSTIE<br> Unscramble these words plssss
    11·1 answer
  • Why are some substances able to pass through a cell membrane while others are not
    5·1 answer
  • 1. Describe soil particles (sand, silt, and clay) in term of size and texture.
    11·1 answer
  • What is a feedback mechanism?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!