how do identify veins in our body​

Answers

Answer 1

Answer:

Veins are blood vessels in humans, and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.

Explanation:


Related Questions

Which part of the mitochondrion contains the proteins that carry out oxidative phosphorylation?.

Answers

Answer:

Inner Mitochondrial Membrane

Explanation:

Oxidative phosphorylation takes place in the inner mitochondrial membrane, in contrast with most of the reactions of the citric acid cycle and fatty acid oxidation, which take place in the matrix.

I'll mark brainliest, please, I need it!
The following diagram shows the branching tree for four kingdoms and some of their shared derived characteristics.

A slanting line is shown. There are four lines drawn vertically on this line at equal intervals. There is a black circle between each pair of these vertical lines. Protists, Plants, Fungi, Animals are written on top of each vertical line in order from left to right. Common Cell is written on the left most end of the sloping line. The second black circle has Mostly Multicellular written on it. The first black circle has X written on it.

What shared characteristic can be written at point X? Use complete sentences to explain your answer.

Answers

Answer:

i need to do some research really quick then i will give the answer once i find it

Explanation:

A note to Charles Darwin about his findings

Answers

Answer:

Dear Charles Darwin,

My name is ___ and I was wondering how all of your theories and findings came to your comprehension of evolution. I have heard and learned about your evolution theories and would like if you could answer some of my questions. What first sparked the interest in evolution? Do you truly believe that everything evolves over time? How do your findings contribute to your theories of evolution? Thank you for your time to answer these questions.

Sincerely ___

Explanation:

Charles Robert Darwin was a British naturalist, geologist, and biologist best known for his contributions to evolutionary science. His dissertation that all kinds of life are derived from a common ancestor is widely accepted today and is considered a basic concept of science.

When testing the effect of light on flowering patterns of plants, temperature would be considered a?
A.independent variable
B. dependent variable
C. constant

Answers

Answer: Independent Variable

Explanation: Already explained this one in another post.

A. Independent variable

If I'm on an elevator that breaks loose and plummets down the shaft, can I avoid harm by jumping at the last second?

Answers

Answer:

It sounds like it would work but it wont. you need to lay down for the safest

Explanation:

Select two options.
What happens during cell respiration?
O The cell takes in oxygen.
O The cell releases oxygen.
O The cell takes in carbon dioxide.
O The cell releases carbon dioxide.
O The cell splits.

Answers

The cell takes in oxygen , and releases carbon dioxide

What is the difference between an f donor and an hfr donor?.

Answers

The Hfr donor has an F factor integrated into its main chromosome, but the F+ donor does not. ... The entire F factor would have to be incorporated into the recipient cell's chromosome.

What are the effects of enzymes on chemical reactions? Select all of the answers that apply.

Answers

Enzymes have multiple effects on the chemical reaction

Answer:

Enzymes will make chemical reactions go faster. Enzymes are catalysts which will lower the activation energy of a chemical reaction. Activation energy is the energy needed to get a reaction going.

Explanation:

what are the selections?

Three types of macromolecules are mentioned in the video that are digested and ABSORBED in the small intestine. What do they all get absorbed into first?

Lacteals

Epithelial cells

Capillaries​

Answers

Given what we know about the biology of the small intestine, we can confirm that the macromolecules are being absorbed into the "Epithelial cells".

The small intestine is in charge of absorbing the nutrients, which we require in order to survive and perform even the most basic metabolic processes, from the food that we ingest. In order to be able to perform this function, the cells in question have specialized epithelium which consists of Microvilli.

Microvilli can be thought of as membrane protrusions that serve to expand the surface area of the epithelial cells. This allows the cells to have a greater area through which to absorb nutrients such as the macromolecules mentioned.

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Sunlight helps our bodles to produce Vitamin D. In some areas of the United States, there is not enough sunlight during the winter mont
support this process. What is on thing you would recommend to people who live in those areas?
O A. Drink juice that is pasteurized with Vitamin D.
O B. Eat more proteins that bulld Vitamin D.
O C. Drink soymilk that is enriched with Vitamin D.
O D. Eat more carbohydrates that bulld Vitamin D.

Answers

Answer:

It would be the first one

Explanation:

A lot of juices are pasteurized with Vitamin D it can be V8, orange juice, grape juice, cranberry juice, etc.

____________ results from chemicals in car exhaust reacting with the sunlight.

Acid Rain

Contaminant fog

Smog

Greenhouse Effect

Answers

Answer:

smog

Explanation:

Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.

Chitin is all of the following EXCEPT ________. Found in insect and crustacean shells Composed of N-acetylglucosamine subunits Composed of linear fibrils like cellulose Found in plant cell walls

Answers

Answer:

Found in plant cell walls

Chitin is all of the following except it is found in the plant cell wall. So, the correct option is D.

What do you mean by Cell wall?

It is the outermost layer of a cell that can be tough, flexible, and sometimes rigid. Its function is to provide structural support and protection to the complete cell.

The Cell-wall of fungi is made up of chitin. It is composed of N-acetylglucosamine subunits. It is also composed of linear fibrils like cellulose. Mostly, found in insect and crustacean shells.

Therefore, Chitin is all of the following except it is found in the plant cell wall.

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________happens in the mitochondrial membrane and is where hydrogen ions are
pumped through to create ATP
O glycolysis
Okreb's cycle
O light reactions
electron transport chain

Answers

Explanation: Electron transport chain

How are hydrogen ions pumped across the membrane?

Image result for what is used to make the mitochondrial membrane and is where hydrogen ions are pumped through to create ATP

During electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix, through ATP synthase, producing ATP.

Methylation is an example of(1 point)

gene mapping

gene editing

epigenetics

DNA replication

Answers

Methylation is an example of epigenetics that is present in the third option, and this methylation helps in the expression of the gene or the repression of the gene product in the cell.

What is the importance of methylation in the cell?

Methylation has many functions, such as in gene expression, where it can turn genes on or off by altering the way that DNA is packaged, such as by tightening or loosening the gene so that enzymes can access it; in DNA stability, methylation can help protect the genome from damage by stabilizing the DNA structure; and in epigenetic regulation, where it plays an important role.

Hence, methylation is an example of epigenetics that is present in the third option, and this methylation helps in the expression of the gene or the repression of the gene product in the cell.

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Answer:

C. Epigenetics

Explanation:

:)

the segment of the dna molecule where messenger rna synthesis begins is called the

Answers

The synthesis is called the Promoter region.

what is mimicry in biology

Answers

Answer:

mimicry, in biology, phenomenon characterized by the superficial resemblance of two or more organisms that are not closely related taxonomically. This resemblance confers an advantage—such as protection from predation—upon one or both organisms by which the organisms deceive the animate agent of natural selection.

Explanation:

What is the main issue with traditional classification?

Answers

Answer:

A major problem is that classifying according to overall similarities can be misleading. For example, dolphins could be mis-classifed as fishes because they have fins, but dolphins are mammals, not fishes.

Explanation:

To all bug experts, what is this bug?

Answers

Answer:

I think it is an emerald cockroach

Which of the following statements is TRUE?

Paraplegia may occur when traumatic injury occurs along the upper vertebral column C1 to C7.
Quadriplegia may occur when traumatic injury occurs along the upper vertebral column C1 to C7.
Paraplegia is paralysis of everything below the neck.
None of the above

Answers

Answer:

b. Quadriplegia may occur when traumatic injury occurs along the upper vertebral column C1 to C7.

Explanation: is correct

Answer:

B

Explanation:

(thank you sunrise you've helped me with like 4 units now)

Plant cells that give rise to two cells, one of which is free to differentiate into various kinds of cells that contribute to the plant body, are called

Answers

Answer:

meristematic cells

Explanation:

Why do parrots mimic people?

Answers

Answer:

Parrots are intelligent and highly social animals with long life spans, just like people. ... So a domestically-bred parrot, such as a budgerigar, that mimics its people is doing what wild parrots naturally do: they are learning and repeating sounds made by its family and flock mates, who happen to be people.

Explanation:

Parrot expert Michael Schindlinger of Lesley University explained in Scientific American in 2007 that mimicking helps parrots separate members of their own community from outsiders. It can allow a bird to find its mate and prevent intracommunity conflicts over territory.

nterphase lasts for ________ of a cell's life.

Answers

Answer: 12-24 hours

Explanation: Interphase generally lasts at least 12 to 24 hours in mammalian tissue. During this period, the cell is constantly synthesizing RNA, producing protein and growing in size.

How do the oxygen (O2) and carbon dioxide (CO2) levels change over time?
What is always true about the total amount of O2 and CO2 in the test tube?
What happens when the CO2 reaches zero?

Answers

Answer:

Over a vast amount of time, millions of years, the earth gradually cooled. When the temperature dropped enough, water vapor condensed and went from a gas to liquid form. This created clouds. From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.

Explanation:

Complete the sentence by using the correct word. Studies of levels of poisons in snow were made by a(n) _____. analyzed especially accumulative environmental microscopic particles industrial geochemist exhaust toxicity

Answers

Answer:

I think it may be geochemist. sry if its wrong!

Explanation:

What are the four functions of lipids

Answers

Answer:

Store Energy – When we take in more energy than we need, the body stores it as adipose tissue (fatty tissue, which we call fat).  

Regulate and Signal – Lipids regulate the temperature of your body, keeping it steady, not too hot, and not too cold.  

Insulate and Protect – Our bodies are padded with fat, protecting us from everyday friction.

Aid Digestion and Increase Bioavailability – When food breaks down in the gut, fat is released and combines with fat-soluble nutrients

Explanation:

which of these statements best describes the role of this enzyme in digestion

Answers

Answer:

One of the most important roles of enzymes is to aid in digestion. Digestion is the process of turning the food we eat into energy. For example, there are enzymes in our saliva, pancreas, intestines and stomach. They break down fats, proteins and carbohydrates.

Explanation:

hope this helps

Which of the following are elements? (Select all that apply.)
Na
H2O
C
KCl
Grade -5-

Answers

Answer:

Na & C

Explanation:

Which sentence best explains how a positive feedback loop affects climate
change?
A. As the number of plants increases, the amount of CO2 decreases.
B. High clouds have a high albedo and reflect solar energy back into
space.
C. As climate warms, CO2 increases because plants remove less of
it.
D. High precipitation results in increased plant growth, lowering CO2.

Answers

A positive feedback loop that affects climate is change as the number of plants increases, the amount of CO2 decreases.

The more trees the less CO2?

Scientists agree that one of the most effective ways to absorb part of the CO2 from the atmosphere would be to plant more trees, as they use CO2 to grow and release oxygen, this action brings benefits to the entire environment.

With this information, we can conclude that A positive feedback loop that affects climate is change as the number of plants increases, the amount of CO2 decreases.

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Which of the following is a binocular cue for depth perception?.

Answers

Where is the picture ?

A binocular cue used to assess depth between two nearby objects is called retinal disparity.

What is the binocular cue for depth perception?

The pictures that both eyes focus on to create stereopsis, or the feeling of depth, is known as binocular depth cues. Using binoculars, one may see the world in three dimensions.

Binocular depth signals can be classified as either retinal disparity or convergence. Convergence centers on a single object while using both eyes.

A binocular cue used to assess depth between two nearby objects is called retinal disparity. It accomplishes this by contrasting the various pictures from the two retinas. Because the distance between each eye is typically around two and a half inches, each eye sees different pictures.

Therefore, the retinal disparity is a binocular cue for depth perception.

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The given question is incomplete, so the correct is,

Which of the following is a binocular cue for the perception of distance?

a. visual cliff

b. linear perspective

c. relative motion

d. relative size

e. retinal disparity

The measure of the average kinetic energy of the particles of a substance is its​

Answers

Answer:

Temperature is a measure of the average kinetic energy of the particles in a substance. It is the kinetic energy of a typical particle. in a substance. It is the kinetic energy of a typical particle.

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