Which of the following is correct concerning the function of the uvea (vascular tunic)?

a. It stabilizes the shape of the eye and produces collagen fibers.
b. It provides the route for the optic nerve and blood vessels to the eye itself.
c. It regulates the amount of light entering the eye.
d. It secretes and reabsorbs vitreous humor.

Answers

Answer 1

Vascular tunic regulates the amount of light entering the eye.

The choroid, ciliary body, and iris form the middle layer of tissue surrounding the eye, also known as the vascular tunic or "uvea," from behind forward. The choroid occupies the bulb's posterior five-sixths and is mostly made up of blood vessels.

The vascular tunic is derived from mesoderm and is located between the outer fibrous tunic and the inner nervous tunic. The uvea is another name for the vascular tunic.

The uvea is the eye's middle layer. It is located beneath the white portion of the eye (the sclera). It is composed of the iris, the ciliary body, and the choroid. These structures regulate many eye functions, such as adjusting to different levels of light or object distances.

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Related Questions

1. 1. What happens during cell differentiation?

Answers

Answer:

Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.

The heart is a small muscular organ with several chambers that contract to push fluid through. The heart is connected to tube-like vessels, which reach every cell in the entire body.

The structure of the heart enables this organ to
A.
interpret images, sounds, textures, and smells taken in through the sense organs.

B.
provide the strong, rigid framework to which the muscles of the body attach.

C.
pump blood containing nutrients, wastes, and gases throughout the body.

D.
provide an opening through which wastes can pass from the body to the outside.

Answers

Answer:

C

Explanation:

That’s the main purpose of the heart

Answer:

touching and touching your re still a charged time but the best way is the best for the kids in meeting the best friends and family members of samruddhi who have not had kept up since they were born

is this a prokaryotic or a eukaryotic cell. explain

Answers

Answer:

Please attach a picture so that Other Brainly users can try and help you with your work :)

Explanation:

Tom grew three inches in one year. Which organ system was directly responsible for his growth spurt?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Endocrine system,

Answers

D. Endocrine system, specifically the pituitary gland.
It would be D! Endocrine system

Which ACTN3 genotype (RR, RX, or XX) would provide these Olympic marathon athletes with an advantage, and why?

Answers

Answer:

XX

Explanation:

ACTN3 genotype i.e. XX provides advantage to the Olympic marathon athletes because it strengthens the fiber of the muscles. This gene is also called the gene of speed. This ACTN3 gene has a great influence on the type of fiber that makes body muscles, and they are also linked to strength and endurance so we can conclude that this gene provides benefits to the Olympic marathon athletes by giving strength to the fiber of muscles.

ACTN3 genotype is the gene encoding for the actinin of the skeletal muscle fibres.  XX of the ACTN3 genotype will be advantageous for marathon athletes.

What is ACTN3 genotype and XX?

ACTN3 genotype is the gene encoding for the protein of the skeletal muscles fibres that are associated with muscular performance.  This protein is expressed in the myofibers with a high twitching ability and result in a high-velocity force.

The XX genotype provides strength to the muscles and is the gene coding for the proteins that give speed. They are also responsible for endurance and are beneficial for athletes.

Therefore, XX of the ACTN3 genotype is advantageous for athletes.

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Which change occurs in a fetus during the first trimester?
A. Rapid weight gain occurs.
B. Fingers and toes become well defined.
C. Eyes and ears become fully developed.
D. Central nervous system completes development.

Answers

C. Eyes and ears become fully developed

Answer:

D. Central nervous system completes development

Explanation:

How many active volcanoes in Luzon , Visayas and Mindanao?

Answers

There are currently
22 active volcanoes in Luzon
428 in Visayas
and 20 in mindanao

Please help ASAP!!!

Answers

Answer:

hi

Explanation:

Manuodia i think.....

Giving brainliest. Need helpp

5.)An ecosystem is made up of __________ and ___________ that live together in an environment.

Answers

Answer:

animals and plants

Explanation:

Answer:

An ecosystem is made up of animals and plants that live together in an environment.

Hope this helps!

study the punnett square below. what percentage of the offspring are heterozygous​

Answers

Answer:

50%

Explanation:

Heterozygous is when both of the alleles are different. Since AA and aa are the same allele, the other two Aa and Aa have on capital and one lowercse and for that reason they are different and thus heterozygous. Since 2.4 are heterozygous, 50% is the answer.

Help im stuck on this question

Answers

That’s tricky good luck

A gene carries the ________ for a trait.

A) Equipment
B) Instructions
C) Materials
D) Protection

Answers

Answer:

Materials

Explanation:

Which of the following pollutants is found in old paint and gasoline and can cause brain damage and learning problems?
A. particulate matter
B. lead
C. coal dust
D. pesticides
Other:

Answers

Answer:

Lead

Explanation:............

None

PLEASE HELP ME!!!!
IT IS FOR BIOLOGY!!!

Answers

Answer:

B.

Explanation:

If the fish population is decreasing, then there will be a loss in biodiversity, then causing a problem in the ecosystem.

The answer to your question would be B. Hope this helped!

define the word corrosion ​

Answers

Answer:

Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment

Explanation:

i hope you like give brainliest if you do

Answer:

the process of corroding metal, stone, or other materials

corroding: destroy or damage (metal, stone, or other materials) slowly by chemical action.

The process of destroying metal, stone, or other materials.

Explanation:

can someone write 6 interesting facts about renewable energy resources

Answers

Answer:

Renewable Energy Produces 5 Times More Jobs Than Fossil Fuels.... China Produces Two Wind Turbines Per Hour.

A single wind turbine will power tens of thousands of homes.

Portugal Powered Their Whole Country Using Only Renewable Energy.... Tech Corporations Are Competing To Be Green Energy Leaders.

Explanation:

what countries have the best geo thermal resources

Answers

Indonesia
Philippines
Turkey
New Zealand
Mexico
Italy
Iceland
Us

Answer:

Indonesia Philippines Turkey New Zealand Mexico Italy Iceland and the U.S

Explanation:

How does diversity in traits arise over generations? How can we determine the probability that an organism's expressed version of a trait will be passed on to its offspring?

Answers

Answer:

Diversity in traits arise over generations through mutation which cause evolution and speciation. We can determine the probability that an organism's expressed version of a trait will be passed onto its offspring through Hardy-Weinberg equilibrium. Hardy-Weinberg equilibrium helps us understand and know genotype and allele frequencies.

Through mutation, which leads to evolution and speciation, diversity in features develops over generations.

What is diversity?

The variety of human distinctions that make up diversity includes, but is not limited to, racial or ethnic origin, gender, gender orientation, age, socioeconomic class, physical ability or traits, and political ideas.

Over generations, diversity in traits emerges through mutation, which causes evolution and speciation.

We can calculate the probability that an organism's expressed version of a trait will be passed on to its offspring using the Hardy-Weinberg equilibrium.

The Hardy-Weinberg equilibrium is used to explain genotype and allele frequencies.

Thus, this way, we can determine the probability that an organism's expressed version of a trait will be passed on to its offspring.

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Help will give brainliest PLEASSSSEEEE u have to submit in 30 min

Answers

Answer:

1) allele for blood type O

2) Allele for blood type B

3) not sure

4) Heterozygous I think

5) I think type B

and 6 not sure

Explanation:

i tried helping as much as i can since ik the stress i hope this helps and my answers MIGHT be wrong but this is what i think it is and what i remember. But what i can infer is that the child will get blood type B since the I is dominant

Fossils in _______ layers of rock are generally estimated to be _______ than fossils found in the deeper layers. (3 points) Explain your answer for justification.

older, younger

newer, younger

older, older

newer, older

Answers

Answer:

newer, younger

Explanation:

this is the best answer

Answer:

Answer is option (C) older, older.

Explanation:

Fossils found in the older layers of a rock (i.e) that are deposited in a deeper position of the Earth, are usually older when compared with the fossils seen in the upper layers of the rock.

Due to the fact that the fossils get accumulated layer upon layer, the older fossils are seen in the bottom layers of the rock.

How do changes to genes affect the traits of an organism

Answers

Mutations over the years effect the gene of an organism

Changes  to genes affect the traits of an organism, as genes have the capability to regulate the organism's function, and the genes can regulate the expression of proteins, which regulate the organism's phenotypic and genotypic expression.

What is the significance of the genes or the traits?

Changes in the genes can affect humans in several ways, such as through genetic mutations that result in changes to the regulation of gene expression and result in the addition or loss of entire genes from the organism. Not all of the genetic mutations lead to expressiable changes, but they may change the protein sequence by changing the polypeptide sequence.

Hence, changes to genes affect the traits of an organism, as genes have the capability to regulate the organism's function, and the genes can regulate the expression of proteins, which regulate the organism's phenotypic and genotypic expression.

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The transport of water through a plant depends on roots absorbing water. Roots depend on osmosis to obtain water. In osmosis, water always a. Moves from a high concentration to a lower concentration b. Moves from a lower concentration to a higher concentration c. Moves so that the concentration of water on one side of the cell membrane is higher than on the other side d. Moves until there is no water left on one side of the cell membrane

Answers

A.moves from higher concentration to lower concentration

A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky,
rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood
throughout the body. A single base mutation is responsible for these irregularly shaped blood cells.

Which of these mutations most likely results in the mutated hemoglobin gene?
F. Insertion
G. Deletion
H. Duplication
J. Substitution

Answers

Answer:J

Explanation:Substitution

Mutation in genes can result in different types of abnormalities. In gene related to hemoglobin makes RBCs sticky, irregular shaped, this is because of substitution.

What is substitution?

Mutation is a type of replication error during formation of new DNA.

In substitution mutation, incorrect nucleotide is placed at incorrect position during DNA replication, a point mutation occur in which a single nucleotide is substituted.

It actually does not add or remove any nucleotide from the sequence, just it substitute it.

In gene related to hemoglobin, the amino acid glutamic acid gets replaced with the valine amino acid at position 6 in beta-globin, which results in sticky, irregularly shaped red blood cells.

Thus the correct option is J.

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6. What is causing the Earth to become imbalanced with carbon-based molecules.

Answers

Answer:

Human activities are causing imbalance of carbon based molecule.

Explanation:

It is the human intervention in the most unavoidable way that is affecting the environmental cycle and one of these cycle is the carbon cycle. Human activities such as burning of fossil fuels, excessive cutting of trees, rising green house effect, use of CFCs etc is hindering the environment process and hence causing imbalance on the earth.

How could humans use less nonrenewable resources?

Answers

Answer:

they could use other forms of energy, such as solar or wind.

Explanation:

GIVING BRAINLIEST!!!!!!!PLS HELPPPP :((

Your lungs take in air through the mouth and nose. Explain how the lungs function in the human body.

A) They coordinate the movement of the heart.
B) They pass oxygen from the air into the blood.
C) They pump the blood throughout the body.
D) They remove carbon dioxide from the air.

Answers

Answer:

Your answer would be "B) They pass oxygen from the air into the blood."

Explanation:

They certainly don't coordinate the movement of the heart, so A isn't an option.

The lungs also don't pump blood through the body, that's the hearts job.

And the lungs do not filter carbon out of the air, which eliminates D.

Therefore your answer is B.

The lungs function in the human body by passing oxygen from the air into the blood.

Gaseous exchange in the lung

Gaseous exchange happens in the lung of humans. Oxygen is exchanged for carbon dioxide.

A mixture of air is taken through the mouth and the nose into the lung. On getting to the lung, the oxygen in the air dissolves on the surface of the lung and enters the blood by diffusion.

In exchange, carbon dioxide in the blood diffuses in the opposite direction and is breathed out.

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Human beings are:

2nd order consumers
1st and 2nd order consumers
producers
1st order consumers

Answers

Answer:

1st and 2nd order consumers as they are pretty much all omnivores.

Explanation:

plz can i get brainliest:)

PLZ HELP ME
Describe what they are and how it works.

Tidal power

Ocean thermal energy conservation

Hydrogen fuel

Fuel cell

Energy Efficiency: give an example

Hybrids: give an example

Cogeneration

Energy conservation: give an example

Answers

Answer:

tidal power

Tidal power or tidal energy is harnessed by converting energy from tides into useful forms of power, mainly electricity using various methods. Although not yet widely used, tidal energy has the potential for future electricity generation. Tides are more predictable than the wind and the sun.

Ocean thermal energy conservation

Ocean Thermal Energy Conversion (OTEC) is a marine renewable energy technology that harnesses the solar energy absorbed by the oceans to generate electric power. ... OTEC uses the ocean's warm surface water with a temperature of around 25°C (77°F) to vaporize a working fluid, which has a low-boiling point, such as ammonia.

hydrogen fuel

Hydrogen fuel cells produce electricity by combining hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell similar to that of a battery to produce electricity, water, and small amounts of heat. Many different types of fuel cells are available for a wide range of applications

fuel cell

Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte.

Energy Efficiency

Energy efficiency simply means using less energy to perform the same task – that is, eliminating energy waste. Energy efficiency brings a variety of benefits: reducing greenhouse gas emissions, reducing demand for energy imports, and lowering our costs on a household and economy-wide level.

Hybrids

a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.

Bovid Hybrids. Zubron - hybrid of domestic cattle and european bison

cogeneration

Cogeneration—also known as combined heat and power, distributed generation, or recycled energy—is the simultaneous production of two or more forms of energy from a single fuel source. Cogeneration power plants often operate at 50 to 70 percent higher efficiency rates than single-generation facilities

Explanation:

Two dogs pull on a rope. One dog pulls with a force of 5 N to the left, and the other dog pulls with a force of 3 N to the right. What is the result?

A.The rope remains in place.

B.The rope moves to the left.

C.The rope moves to the right.

D.The rope has a balanced force applied to it.

Answers

Answer: It's B because there is more force pulling to the left.

Hope it helps. Brainliest?

Select the correct answer.
Matt is a student preparing for a test on veterinary science. He wants to know what type of noninfectious disease describes all kinds of
cancerous growths. Which type of disorder includes cancerous growths?
A metabolic
B. neoplastic
C. degenerative
D. genetic

Answers

Answer:

b i think i am sorry if am wrong

Explanation:

Other Questions
Sean and Rachel were both born on April 17. When Sean was 4, his sister Rachel was 2 . Use this information to answer all of the questons in this section. amoritzation table gives you information about what When working with an Agile team managers will often give up long term plans for predictability? consider a study in which two different groups of rats are being exposed to exactly the same amount of painful shock. one group is able to stop the shock by pressing a bar, while the other group can do nothing to stop the shock. what would you expect to happen in regard to the rats' stress response? group of answer choices What is the ratio of genotypes produced in the example of crossing a heterozygous yellow pea with another heterozygous pea ratio of phenotypes? TRUE OR FALSE a fully distributed database management system (dbms) must perform all the functions of a centralized dbms, and it must handle all necessary functions imposed by the distribution of data and processing. PLEASE HELP!! ILL MARK THE BRANNIEST! Which of the following is a result of having scarce economic resources for the production of goods and services?O The production of unlimited goods and services O Poverty and unequal distribution of wealth O Fewer options that require choices O Deflation What are the 2 purposes of art? What are the 3 types of pricing? The ______ art song, or lied, is performed by solo voice and piano. diabetic ketoacidosis occurs when a(n) is a step-by-step direction for performing a specific task, which is written in a language the computer can understand. a. array b. cache c. program d. server Two-Column proof for my geometry class on december 31, strike company sold one of its batting cages for $50,000. the equipment had an original cost of $310,000 and has accumulated depreciation of $260,000. depreciation has been recorded up to the end of the year. what is the amount of the gain or loss on this transaction? a.no gain or loss b.loss of $50,000 c.gain of $50,000 d.cannot determine without more information within situational control, the extent to which a manager has or does not have the support, loyalty, and trust of the work group is known which of the following? a potato falling vertically downward is struck by a dart that is traveling vertically upward, as shown above. the dart and potato then collide, stick together, and continue moving after the collision. question consider the dart-potato system. which of the following graphs best represents the speed v of the center-of-mass of the dart-potato system, as a function of time t, before, during, and after the collision? Solve for x: 7 < x 1 < 8 6 < x < 9 6 > x > 9 6 > x > 9 6 < x < 9 The maximum penalty that may be assessed for a single non willful violation of the insurance code is the dominance of cotton production by slave labor in the south was actually distorting and limiting the development of the southern economy because it