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
Sophie [7]
3 years ago
10

Compared to arteries, the velocity of flow of the blood through the capillaries is:______.

Biology
1 answer:
Nutka1998 [239]3 years ago
7 0

Answer: D) much slower

Explanation:

The circulatory system, made up of arteries and veins, is fundamental to maintaining life. Its function is the delivery of oxygen and nutrients to all cells, as well as the removal of carbon dioxide and waste products, the maintenance of physiological pH, and the mobility of the elements, proteins, and cells of the immune system. An artery is each of the vessels that carry blood with oxygen from the heart to the capillaries of the body. They arise from a ventricle and their walls are very strong and elastic to resist the pressure that the blood exerts when it is pumped out of the heart.

Capillaries are very small diameter, thin-walled blood vessels connect small arteries (arterioles) to veins, allowing nutrients and oxygen to pass through to tissues.  The main function of the capillaries is the exchange of substances between the light of the capillaries and the cell interstice of the tissues.

When the blood reaches the capillary bed, the speed with which it circulates inside these vessels is very low. This is due to the fact that in a branching system of tubes, the speed decreases proportionally to the increase in the joint section of the branches. Thus, in the aorta, which has a small section, the speed is very high (400 mm/sec), it decreases at the level of the arteries and arterioles and at the capillary level it becomes minimal (0.1 mm/sec). <u>This fact, together with the thinness of the capillary wall, provides the necessary conditions of time and space for the exchange to take place in the most optimal way.</u>

<u />

You might be interested in
Isovolumetric relaxation and ventricular filling (two phases of the cardiac cycle) take place during __________. view available
jekas [21]
Isovelumetric relaxation and ventricular filling take place during Ventricular diastole.. Both occur during ventricular diastole when the ventricles are not actively contracting and ejecting blood. Ventricular diastole is the period during which the two ventricles are relaxing from contortions of contraction, then dilating and filling; atrial diastole is the period during which the two atria are relaxing, dilating, and filling.
5 0
3 years ago
The field of conservation biology ________.
katrin2010 [14]
If you are doing a quiz...then maybe you need this...
https://quizlet.com/137205156/exam-3-bio-102-gleeson-flash-cards/
8 0
2 years ago
Where would a tundra biome be located?
inysia [295]
Canada as it is far from the equator
6 0
3 years ago
Describe the process of cloning from start to finish.
abruzzese [7]

Answer:

1. Isolation of donor DNA fragment or gene.

2. Selection of suitable vector.

3. Incorporation of donor DNA fragment into the vector.

4. Transformation of recombinant vector into a suitable host cell.

5. Isolation of recombinant host cell.

3 0
2 years ago
Which measurement unit describes the amount of energy food contains?
KiRa [710]
Traditionally the unit was the kilo-calorie but commonly just referred to as calorie. today's SI unit is the Joule...
6 0
3 years ago
Read 2 more answers
Other questions:
  • What causes an object with mass to have weight?
    14·1 answer
  • QUESTION 3
    15·2 answers
  • Which specific refrigerant has the highest global warming potential (gwp) of all the common refrigerants?
    5·1 answer
  • What are enzymes?Need a specific good answer soon as possible!
    12·2 answers
  • What is the relationship between blood and urine ?
    15·1 answer
  • Scientists can find new discoveries that change their current understanding of scientific knowledge. True or False?
    11·1 answer
  • A student discovers a mat of green organisms living along the edge of a stream and suspects it is a moss. To confirm that this o
    9·1 answer
  • Which of the following do you expect if an individual is heterozygous for the sickle-cell trait?
    6·1 answer
  • A compound in cranberries may prevent some bacteria from clinging to the urinary tract and help prevent urinary tract infections
    14·1 answer
  • Choose an ecosystem and describe a food chain within that ecosystem, giving examples of producers and consumers.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!