Select the correct answer.

What hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg can successfully implant in it?

A. The pituitary gland secretes oxytocin, which maintains the endometrial lining.

B. The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.

C. The hypothalamus secretes gonadotropin releasing hormone, which maintains the endometrial lining.

D. The developing embryo secretes human chorionic gonadotropin, which prevents the corpus luteum from disintegrating.

E. The developing embryo takes over the production of progesterone after the breakdown of the corpus luteum to maintain the endometrial lining.

Answers

Answer 1
The correct option is B.
For a mature woman, each month the increased level of estrogen hormone leads the pituitary gland to secrete luteinizing hormone. Once this hormone is secreted, the ovary releases a single egg which moves down to the lining of the uterus. If fertilization does not occur, the egg is shed together with the lining of the uterus in a monthly process called mensuration. If fertilization occur, then the fertilized egg attach to the lining of the uterus and placenta is formed. The fertilized egg then send signal to the ovary to keep secreting progesterone, which will sustaining the pregnancy by keeping the uterus lining thick and nourishing for the developing embryo.
Answer 2

Answer:

B. The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.

Explanation:


Related Questions

Where are sugars formed in the chloroplasts?

Answers

Chloroplasts are double membrane bound organelles found in plants. It contains a photosynthetic pigment called chlorophyll which is responsible for the green color of the leaves and sometimes stem. The whole process of photosynthesis takes place in chloroplast. Chloroplast contains thylakoids and stroma (matrix).

Answer: Sugars are formed in the STROMA of chloroplasts.

Where did our oceans come from

Answers

Scientists think that over time, all these collisions filled the oceans. Another idea is that ocean water came from deep inside the earth. It was brought to the surface when volcanoes erupted. Scientists think soon after the earth was formed, there was a long period of massive volcanic eruptions.

Which characteristic is not useful in the classification of igneous rocks?

Answers

Two main characteristics are used to classify igneous rocks: 1) texture (the size of the mineral grains in the rock; and 2) composition (often determined by what the actual minerals are).

Answer:

1,2,3

Explanation:

origin

texture

composition

Which of the components of the cytoskeleton is much more important to animal cells than to plant cells?

Answers

The answer for this question is Microfilaments

What tiny blood vessels transports absorbed nutrients what is it called?

Answers

The tiny blood vessels that are responsible or have the role of transporting absorbed nutrients in our body is the capillaries. It is a network in which connects the venules and the arterioles in order to transport and connect nutrients for evenly distribution in the body.

A word for the first settlements, formed when humans began to domesticate plants and animals

Answers

"Village" is the term used to refer to the first settlements formed as humans began domesticating plants and animals.

A village is comprised of a clustered human settlement or community, with a few hundred to a few thousand people. It is typically smaller than a town but larger than a hamlet and is usually a permanent settlement, with dwellings spaced closely from each other. The surrounding lands were usually farmed, but in the case of traditional fishing villages, they were located adjacent to fishing grounds as well. 

Let’s talk about tina jones’ decreased peripheral pulses in the foot and mild edema in her foot. what goals would you set for her ineffective peripheral tissue perfusion

Answers

Final answer:

Tina Jones's symptoms of decreased peripheral pulses and mild edema indicate ineffective peripheral tissue perfusion, possibly due to her obesity and sedentary job. Increasing physical activity and managing weight, along with a reassessment of medications, may improve her condition by enhancing the function of the skeletal muscle pump and venous return.

Explanation:

The signs and symptoms presented by Tina Jones, including decreased peripheral pulses in the foot and mild edema in her foot, point towards an ineffective peripheral tissue perfusion problem likely related to her sedentary job and obesity. Due to her lack of physical activity and prolonged periods of standing as a cashier, her skeletal muscle pump is not being used effectively to help push blood back up against gravity to the heart. This leads to venous pooling and edema.

Given that the skeletal muscle pump relies on muscle contractions to push on veins and facilitate the return of blood to the heart, Tina's sedentary lifestyle could contribute significantly to her condition. The goals for managing her ineffective peripheral tissue perfusion should include increasing physical activity to improve the effectiveness of her skeletal muscle pump, managing her weight, and potentially assessing for the use of compression stockings or other interventions that may assist in improving venous return.

Tina's case is also indicative of how certain medications, such as vasodilators and calcium channel blockers, can exacerbate edema. A detailed assessment of her medication regimen may be needed in addition to lifestyle interventions. Understanding the physiological role of the skeletal muscle pump and the impact of sedentariness on venous return can be crucial in managing symptoms and improving overall circulatory health.

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PLZ HELP!!!! A LOT OF POINTS!!!! WILL GIVE BRAINLIEST ANSWER!!!!!

You have just learned that in much of nature, the structure of a body part or organ is related to its function—the lesson provided you with some examples. For example, a maned wolf has very long legs (structure). You could deduce that those long legs will help the wolf travel more easily in its environment (it lives in grassland with tall grasses). Think about your own favorite animal, plant, or other organism. Think about it's physical characteristics, maybe it has long legs or webbed feet? Explain how that organism’s structure relates to its function. Explain how it helps that organism.

Answers

Cheetah cubs are born with a white and black stripe on top of their body.Honey Badgers have that same pattern but cheetah cubs are vulnerable when they are born and honey badgers are stuff and fearless that no animal picks on them.So when the mother goes hunting the cubs curl up and when a predator comes they think its a honey badger sleeping so they leave it alone.That's how cheetah cubs survive. 
Final answer:

Ducks have specialized physical features like broad, flat, webbed feet and waterproof feathers that facilitate their function, enabling them to swim efficiently and stay buoyant in water.

Explanation:

Consider the example of a duck. Ducks have broad, flat, and webbed feet (their physical feature or structure). This structure facilitates their function, which is to swim efficiently in water. The webbing between their toes creates a larger surface area which forms a paddle, enabling them to push more water back and, hence, swim forward more effectively. The feet are also positioned toward the rear of their bodies, acting as rudders for maneuverability while swimming. Likewise, a duck's feathers are coated in a waterproofing oil, enabling them to stay dry and buoyant in water. This is an excellent example of how an organism's structure relates to its function, enhancing its survival in its specific environment.

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True or false? two divisions of the central nervous system is the somatic nervous system and autonomic nervous system.

Answers

i think ture because most of the time you somatic do starts to hurt when you get scard and nervous.

Radiant heat cannot travel through a vacuum.
true or false

Answers

The answer is False. I hope this helps!

Which of the following enzymes serve as catalysts in metabolism?
I. amylase
II. lactase
III. pepsin
IV. polymerase

Answers

Amylase, lactase, and pepsin serve as catalysts in metabolism. 

I hope this helps!

The enzyme that can digest fibrin and dissolve a clot is fibrinase. plasmin. phosphokinase. heparin. thrombin.

Answers

Fibrinase is the answer

Final answer:

The enzyme that digests fibrin and dissolves clots is plasmin, a serine protease that performs a vital role in the body's clot removal process by breaking down fibrin clots through fibrinolysis.

Explanation:

The enzyme known for digesting fibrin and dissolving a clot is plasmin. Plasmin is a serine protease that degrades many blood plasma proteins, including fibrin clots. The process of breaking down fibrin, termed fibrinolysis, involves the conversion of the inactive protein plasminogen into active plasmin, which systematically digests the fibrin within the clot, enabling restoration of normal blood flow.

Plasmin has the ability to cleave a variety of proteins such as polymerized fibrin clots, fibronectin, thrombospondin, laminin, and von Willebrand factor. It is activated by tissue plasminogen activator (TPA), which also binds to fibrin. This enzyme plays a crucial role in the healing process by dissolving blood clots that have fulfilled their purpose of stopping bleeding.

Protein digestion starts in the _____________, where _______________ denatures proteins.

Answers

The answer to this question would be: Stomach(gaster), HCl

Protein digestion happens in the stomach. The stomach will secrete the acid which was HCl to kill bacteria inside food and denatures the protein. The acid also activates pepsin enzyme and in turn, will digest the protein into smaller amino acids.

Protein digestion starts in the stomach, where hydrochloric acid denatures proteins.

This denaturing process unfolds the proteins, making them more accessible for enzymatic digestion. Pepsinogen, inactive in gastric juice, is activated by HCl into pepsin, which then starts breaking down the peptide bonds, leading to the formation of shorter polypeptides and eventually amino acids.

Escherichia coli replicates in one plane and is a rod-shaped bacteria. it is a bacterium normally found in the intestine of humans as part of our normal flora. in some cases,
e. coli can also cause disease. you collect a fecal sample to identify whether the patient has
e. coli in his/her intestine. under the microscope you find a single-celled organism that is approximately 10 micrometers in size. this is approximately the same size a human white blood cell. true or false. based on this information, the identified cell could be
e. coli.

Answers

False. E.coli is generally about 2 micrometers in size compared to white blood cells which are around 13 micrometers in size. Also, white blood cells have a characteristic segmented nucleus with two to five lobes joined by fine strands of chromatin.

Xplain how an emerging virus might suddenly appear in a human population

Answers

An emerging virus might suddenly appear in a human population if it is airborne, meaning many people will get it at the same time. This causes the virus to spread, initially making a population be affected.

What type of compensating filter is recommended for use on an ap shoulder projection for a hypersthenic patient?

Answers

Surgery of internal organs and food processing hygiene.

Every species participates in some way in which major category of interspecific interactions? a. mutualism b. commensalism c. competition d. amensalism e. consumer–resource

Answers

Answer: (a) MUTUALISM

Mutualism or symbiosis is a biological interaction where both the organisms participate in the interaction and both are benefited mutually. The participation of both the organism is necessary in this interaction because one cannot survive without the other. For example, a lichen is a mutualistic association where specific alga live in association with specific fungi. Alga produces food for fungus and fungus provides shelter to the alga.

What happens first when DNA replicates?

Answers

During DNA replication, two strands of DNA separate, and each separate strand forms a template to make a new strand. The replication process results in the formation of two identical molecules, containing one strand from the original piece of DNA and one newly synthesized strand. Continue Reading.

The ________ is a narrow band of ________ that is/are visible to the human eye

Answers

Wave length
Light
I hope this helps

Gas giants have atmospheres composed primarily of helium and _______.

Answers

They contain hydrogen and helium.
Hope this helps!

Gas giants have atmospheres composed primarily of helium and hydrogen

It is crucial that the process of mitosis is error free. This is because other wise healthy cells can

Answers

It is crucial that the process of mitosis is error free. This is because other wise healthy cells can become cancer cells since mitosis deals with the whole human reproduction thing, its best to keep it clean so nothing happens to the healthy cells or else it can be infected and possibly harm a person/baby.

During the hours of daylight, the concentration of carbon dioxide in the air spaces is higher than in the cell of layer x
Explain why this difference in concentration is important to leaf cells

Answers

So the carbon dioxide can fuse into the cell, unlike oxygen which goes out of the cell.

Why can't rna adopt a b-form helical structure?

Answers

Under physiological condition, RNA exists in an A form helix structure unlike DNA which adopts a B form helix structure. The A conformation found in RNA is caused by the steric limitation imposed on RNA by its ribose components. The steric clash between the second and third hydroxyl groups in the ribose component of the RNA molecule makes the formation of B form by the RNA molecule to be unfavourable, therefore the RNA is forced to adopt the A conformation. This A conformation is also responsible for the more stable structure of the RNA molecule.

Employees who frequently have a negative attitude can still maintain a high level of productivity.
a. True
b. False

Answers

its false. Employees who frequently have a nagetive attitude can't mantain a high level of productivity

Answer:

The answer is B (False)

Explanation:

Employees who have a negative attitude are not incentivized with the work they do, wich means that their performance is not optimal

Deoxygenated blood from the legs enters the heart through which vessels

Answers

The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery

PLEASE HELP!!!
What is the allele frequency?
A The total number of different alleles in a population
B The number of different traits in a population
C The number of different alleles an organism can have
D The distribution of alleles in a population
Only answer if you know!

Answers

Final answer:

Allele frequency refers to the distribution of alleles within a population, often expressed as a percentage or proportion. It's used in studying genetic diversity and evolution, and it doesn't equate to the number of different alleles an organism can have or traits in a population.

Explanation:

The allele frequency refers to the distribution of alleles in a population. To put it more specifically, it's the percentage or proportion of a particular allele for a specific gene in a given population. For instance, if 60% of a population has a particular allele for a certain trait, that would be the allele's frequency. It's crucial in studies of genetic diversity and evolution. The term doesn't refer to the number of different alleles an organism can have (which relates more to its genotype), the total number of different alleles in a population or the number of different traits in a population (which is more about phenotypic diversity).

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What is the type of organism that breaks down the cells of dead organisms?

Answers

Decomposers are nature's recyclers as they break down the organic matter found in the dead bodies of plants and animals

What organelles can only be found in animal cells?

Answers

The lysosomes are the “garbage disposal” of animal cells , the same process takes place in plant cells in its vacuoles
Final answer:

Organelles unique to animal cells include the centrosome, containing centrioles, and the lysosomes, which break down waste. Plant cells typically do not contain these organelles.

Explanation:

The organelles that can only be found in animal cells and not in most plant cells are the centrosome and lysosomes. The centrosome is a structure that plays a crucial role in cell division and contains a pair of centrioles, which are not present in plant cells. Additionally, lysosomes, which are often referred to as the cell's 'garbage disposal', are responsible for breaking down waste materials and cellular debris. Plant cells typically manage these processes in vacuoles, hence lysosomes are not common in plant cells.

While both plant and animal cells have microtubule organizing centers (MTOCs), only animal cells have centrioles associated with the MTOC in the complex known as the centrosome. Moreover, despite the eukaryotic cell's highly compartmentalized structure, certain organelles like lysosomes and centrosomes are unique features of animal cells, facilitating specific cellular functions such as waste management and cell division.

A woman is taking vaginal progesterone suppositories during her first trimester because her body does not produce enough of it naturally. she asks the nurse what function this hormone has in her pregnancy. what should the nurse explain is the primary function of progesterone

Answers

Maintains the endometrial lining of the uterus during pregnancy
Correct 
Explanation: 
Progesterone is necessary to maintain the endometrial lining of the uterus during pregnancy. It is human chorionic gonadotropin (hCG) that acts to ensure the corpus luteum of the ovary continues to produce estrogen and progesterone. Estrogen contributes to mammary gland development, and human placental lactogen regulates maternal glucose, protein, and fat levels. (less)

Which sentence most likely explains why the rock has large open pores?

Answers

Of the following given choices;

a. Softer parts of the rock melted in sunlight, leaving behind empty holes.

b. Contact with hard pebbles during cooling left dents in the rock.

c. Bubbles formed in the magma when it was still in liquid form.

d. Crystals embedded in the rock fell off due to friction in Earth’s


The answer is; C

This occurs especially in thick magma that has a high silica content. This magma has low viscosity and cools fast when exposed to the atmosphere. Also due to its high viscosity, it tends to trap its gases in bubbles (especially magma with high gaseous content such as sulfur dioxide) and when the magma cools into rock, the gasses escape leaving behind pores in the rock. An example of such as rock is the pumice rock.


C for plato users :)

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