why do veins have large lumens​

Answers

Answer 1
Veins carry unoxygenated blood towards the heart, away from tissues at low pressure so the lumen is large.

Related Questions

What are five ways to help keep groundwater clean?

Answers

Five ways to keep Ground Water Clean!

Purification

Less Littering

Less pollution

Less gas around water areas

Cleaning up around your local area

What would have happened if Went had carried out the experiment described in the second half of the animation using a block of impermeable plastic instead of permeable gelatin?

Answers

In the presence of an impermeable plastic, the shoot will grow in a curved manner towards the source of sunlight.

How do plants grow?

One of the important things that is required for the effective growth of plants is light. In the presence of light, plants tend to grow upright without bending.

However, in the presence of an impermeable plastic, the shoot will grow in a curved manner towards the source of sunlight.

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Which of the four characteristics of
populations is the summary of the
amount of individuals at each age?
A. Growth Rate
B. Age Structure
C. Population Density
D. Age Span

Answers

The summary of the amount of individuals at each age is the age structure. That is option B

What are the characteristics of population?

Population is defined as the group of individuals or animals that are living in a particular geographical location.

The characteristics of population include the following:

growth rate,

Age structure

population density and

Age

The amount of individuals at each age is the age structure of the population.

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Which statements is true about organ systems in the human body?

Choose 1 answer:

(A) if one organ system fails, a different organ system can take its place.

(B) all organ systems carry out the same functions in the human body.

(C) organ systems interact to allow the body to live and grow.

Answers

Answer:

That is depend upon the proper function of the body

Hope it will help you to understand and help you to choose your answer yourself Thankyou

how does a cell avoid dna overlode

Answers

Answer: the cell divides.

Explanation:

2. Check THREE that apply.
What are some differences between plant and animal cells?

Plant cells have chloroplasts.

Plant cells have a stiff cell wall.

Plant cells have a cell membrane.

Plant cells have vacuoles.

Plant cells have chorophyll.

Answers

1 - plant cells have chloroplasts
2 - plant cells have a stiff cell wall
3 - plant cells have chlorophyll

Which of the following is a correct product of mitosis?

2 haploid cells that are genetically identical to the parent cells


4 haploid cells that are genetically identical to the parent cells


2 diploid cells that are genetically identical to the parent cells


4 diploid cells that are genetically identical to the parent cells

Answers

2 diploid cells that are genetically identical to the parent cells


1. A Muslim house of worship is called

Answers

mosque

alhamdulillah I am Muslim

Which best explains why it is difficult to classify protists?
O They are all so much like one another.
• There is a lot of diversity
between the organisms.
O They
do not have anything in
common with other organisms.
O They have structures that are hard to observe.

Answers

Answer:

There is a lot of diversity between the organisms.

hope it helps!

Describe what happens during interphase

Answers

Answer:

the cell grows and the nuclear DNA is duplicated

Answer:

DNA replication takes place during interphase

1.) You have to inform your community about the Aedes aegypti mosquito.
Describe how the mosquito transmits the dengue fever virus to human beings.

2.) Outline TWO activities which the community can carry out on the environment, to prevent the spread of mosquito-borne diseases, and explain how these activities will be effective in preventing the diseases.

3.) Suggest ONE activity, OTHER THAN the two in (b) (ii), which you can carry out in the home to prevent the spread of dengue fever.


Hello, please answer those questions, please.

Answers

Proper environmental sanitation and the use of insecticides will prevent the spread of dengue fever virus.

What is a disease vector?

A disease vector is an organism which transmits pathogens to other organism.

Aedes aegypti mosquito is the vector for dengue fever. It transmits mosquito through its bite, thus introducing the virus into the blood.

The use of insecticides and the proper sanitation will help prevent the transmission of diseases.

At home, use of insecticide-treated nets will help prevent the spread of dengue fever.

Therefore, proper environmental sanitation and the use of insecticides will prevent the spread of dengue fever virus.

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If both parents have type A blood what are their genotypes?

Answers

Answer:

Explanation:

Two parents with blood type A will have a baby with either A or O

Which region of the circulatory system allows passage of nutrients and other small molecules to service nearby tissues

Answers

Capillaries, as they exchange of substances(nutrients and oxygen) between the blood and interstitial fluid.

How are the electron transport chains in photosynthesis and cellular respiration
similar? how are they different?

Answers

Answer:

They are simular because they have photosynthesis and cellular reproduction in their DNA

Explanation:

They are different because one contains one more than the other does.

The texture of a single melodic line without accompaniment is:

Answers

Answer:

Monophony

Explanation:

This can be found in the nucleus, and are tiny strands
that contain the instructions for directing the cell's
functions.
a. dna
b. chloroplasts
c. golgi bodies
d. er

Answers

Answer:

The answer is A. DNA.

Explanation:

Control center of the cell; contains DNAControl center of the cell; contains DNA Stores food, water, wastes, and other materials Found inside the nucleus and produces ribosome

Cytokinesis is when the cell
separates into two identical
daughter cells. Cytokinesis is
which phase of cell division?

Answers

Answer:

D. Last

Explanation: Cytokinesis occurs when the cytoplasm split  and the 2 daughter cells are fully separated.

D. Explanation: Can’t explain very well but if you go over it you will come to see

please answer this correctly​

Answers

Answer:

b. Latituded. Degreesb. Equatora. Prime Meridianb. Longitude

Explanation:

1. The imaginary line that extends horizontally from east to west on a map or a globe that measures distance is called latitude.

2. Degrees are not part of the globe.

3. The Equator is known as zero latitude.

4. The Prime Meridian is an imaginary line which lies on zero degrees longitude.

5. Longitude describes the places in degrees north or south of an equator.

A pattern of stars ________ during the nighttime.

a. can appear to move
b. can shift position
c. will get brighter
d. will move closer

Answers

Answer:

A. Can appear to move

Explanation:

As the Earth rotates on its axis, the patterns of stars in the night sky appear to move.

Which substances are needed to make food in plants?.

Answers

Answer:

Carbon dioxide and water

Explanation: Photosynthesis= Carbon dioxide+ water------> Glucose and Oxygen

The lateral kidney position allows approach to the retroperitoneal area of the flank. to render the kidney region readily accessible, the ______ is raised, and the bed flexed so that the area between the twelfth rib and the iliac crest is elevated. compression of the _______ can occur when the flank is raised too high.

Answers

Filling in the blanks

The lateral kidney position allows approach to the retroperitoneal area of the flank. to render the kidney region readily accessible, the kidney bridge is raised, and the bed flexed so that the area between the twelfth rib and the iliac crest is elevated. compression of the vena cava can occur when the flank is raised too high.

Kidney bridge vs Vena Cava

The kidney bridge is used  during gallbladder and kidney operations to enable the proper positioning of the patient on he operating table usually Obese patients, it renders the kidney region readily accessible. While Vena cava transports blood through the major organs in the body and it's compression can occur when the flank is raised too high.

Hence we can conclude that The kidney bridge is used  during gallbladder and kidney operations to enable the proper positioning of the patient on he operating table usually Obese patients, it renders the kidney region readily accessible. While Vena cava transports blood through the major organs in the body and it's compression can occur when the flank is raised too high.

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The lateral kidney position allows the approach to the retroperitoneal area of the flank to render the kidney region readily accessible, the kidney bridge is raised, and the bed flexed so that the area between the twelfth rib and the iliac crest is elevated. Compression of the vena cava can occur when the flank is raised too high.

What are the functions of kidneys?

The kidney performs numerous functions in the body of an organism. Some of them are as follows:

Regulation of extracellular fluid volume.Removal of waste products.Control of blood pressure.Compensation for minerals and chemicals. Production of red blood cells.

The kidney bridge is utilized when a patient undergoes any kidney operations. While vena cava plays an important role in the transportation of blood to the significant organs of the body.

Therefore, it is well described above.

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2. What is the role of the following components in maintaining homeostasis:
(b) Control center:

Answers

Answer:

To maintain homeostasis, the control center responds to the changes in the stimulus received from the sensor by sending signals to effectors

4. Describe the large-scale change that occurred at Coldwater Creek after the eruption. What effect would this have had on the local ecosystem?

Answers

The gases and dust that the volcanic eruption releases changes the climate because most particles erupted shade incoming solar radiation causing the global climate to cool down.

What are the different ways to recover grassland ecosystem after volcanic revolution?

The volcanic eruption destroys a grassland ecosystem. They burns the place and the plants. The dusts cover up the leaves and the heat kills the seeds and spores of the plants. The recovery isn’t easy and fast.  

As the volcano lava cools and subsides, the new vegetation starts to grow.  

The seeds are brought by the wind, birds and other animals that are spread over the landform.  The rain provides the necessary water for germination.  Volcano supplies the necessary minerals that are very good for plant growth.  

Thus, most particles erupted shade incoming solar radiation causing the global climate to cool down.

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There is a loss of many organisms of marine ecosystem.

What is coldwater creek lake?

The lake was created during the 1980 eruption of Mount St. Helens, which blocked its natural outlet, Coldwater Creek, with volcanic debris. It is one of several lakes in the area that were created or otherwise enlarged by the eruption.

The lake was completely vacated after the eruption as well as the eradication of all life forms except for bacteria, which can be a source of a new life in lake.

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Which correctly lists the three gases that are part of Earth’s cycles in both the atmosphere and biosphere? radon, carbon monoxide, oxygen carbon dioxide, nitrogen, oxygen nitrogen, carbon dioxide, carbon monoxide carbon dioxide, radon, oxygen

Answers

The three gases that are part of Earth’s cycles in both the atmosphere and biosphere are:

oxygen- nitrogen- carbon dioxide

Explain your answer?

The oxygen,  nitrogen, and carbon dioxide are the three gasses that are constantly moving through the atmosphere and biosphere in their own respective cycles.

The oxygen is used by the animals for breathing, but it is also released as a byproduct by the producers. The nitrogen is used as a food source for the producers, as well as the carbon dioxide which is crucial for the process of photosynthesis.

Thus, Part of them is released through decomposition, part by releasing them in the atmosphere or in the soil.

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Answer:

It's B - carbon dioxide, nitrogen, oxygen

Explanation:

edge

Which ,begin emphasis,three,end emphasis, conclusions can be made from the food chain? answer options with 5 options a. organisms give energy to the sun. b. sunlight is the main source of energy. c. consumers get energy from producers. d. energy moves from one organism to another. e. energy moves in both directions among the organisms.

Answers

Answer:

Not all the energy is passed from one level of the food chain to the next. About 90 per cent of energy may be lost as heat (released during respiration), through movement, or in materials that the consumer does not digest. The energy stored in undigested materials can be transferred to decomposers.

Explanation:

brainlist pls thangks

the tiny hairs that keep mucus and dirt out of your lungs are called:

Answers

Answer:

The bronchus in the lungs are lined with hair-like projections called cilia that move microbes and debris up and out of the airways. Scattered throughout the cilia are goblet cells that secrete mucus which helps protect the lining of the bronchus and trap microorganisms.

Explanation:

Answer:

Cilla

Explanation:

Cilla keeps mucus and dirt out of our lungs.


I hope it helps! Have a great day!

Muffin~

The chemical elements are made up of atoms. True False

Answers

Answer:

This statement is true. All chemical elements are made up of atoms because atoms can cause chemical reactions when chemical bonds are broken, also why certain chemicals exist.

4. When does a decay series end?

Answers

Answer:

A decay series ends when a stable nuclide is reached - it will no longer spontaneously decay.

Explanation:

Which statements are true about observations? (Select all that apply.)

A. Observations are only made in a laboratory setting.

B. They are statements made based on something seen, noticed, or measured.

C. We naturally make observations about the world around us.

D. Lab experiments rely on observations, but field investigations do not.

Answers

Answer:

b and c

Explanation:

Answer:

b and c

Explanation:

What are micropipettes, and how are they used?

Answers

Answer:

It is a common yet an essential paboratory instrument used to accurately and precisely transfer volumes of liquid in the microliter range

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