Which structure of the female reproductive system serves as the narrow opening of the uterus that extends into the uterus?

QUESTION POSTED AT 26/03/2020 - 03:24 PM

Related questions

How many chromosomes does the egg of a female grasshopper contain

The female grasshoppers unfertilized eggs would have 12 chromosomes,fertilized eggs would contain the full 24.

ANSWERED AT 28/03/2020 - 12:44 PM

QUESTION POSTED AT 28/03/2020 - 12:44 PM

What are 5 facts about the Reproductive System?

•Sex cells are also called gametes
•embryos develop on the lining of the uterus
•the ovaries produce the eggs
•the process of developing and releasing eggs is called the menstrual cycle
•once a sperm cell enters an egg cell no other sperm cell can enter
•the gender of the child depends on the sperm cell

ANSWERED AT 28/03/2020 - 12:34 PM

QUESTION POSTED AT 28/03/2020 - 12:34 PM

1. How do your skeleton and muscular system work together, 2. What type of muscle tissue would you find in the heart? blood vessels? toes?

The answer to your first question involves a connection between your actions and your brain. Your bones and muscles work together through a series of impulses and signals communicated between the brain and skeletal muscles. In order to move, the nervous system then sends signals a skeletal muscle to contract. When the muscle contracts, this movement causes the attached bone to follow.

And as for your second question, 
The muscle tissue in your heart is cardiac, the muscle tissue in your blood vessels is smooth, and the muscle tissue in your toes is skeletal. 

I hope this helps you, have a nice day!

ANSWERED AT 28/03/2020 - 12:27 PM

QUESTION POSTED AT 28/03/2020 - 12:27 PM

The Prime Mover is a muscle doing the work. It is contracting and may be moving a bone (or structure.) True False

I think it is True but i dont really know why i just have a feeling that that is the answer to your question

ANSWERED AT 28/03/2020 - 12:07 PM

QUESTION POSTED AT 28/03/2020 - 12:07 PM

Which of the following are not characteristics of the cell wall? Select all that apply. cellulose and chitin hydrophillic and hydrophobic structures found in cells of fungi and algae double-layered membrane

Answer: hydrophobic and hydrophilic structures found in cells of fungi and algea

double-layered membrane

A cell wall is a a semi-permeable protective layer found in some cell types. This covers the cell membrane in plants cells, fungi, bacteria. Animal cells do not possess cell wall. The cell wall performs functions like protection, provides structural stability to a cell and support. Cell wall composition varies depending upon the type of organism. In plants the cell wall is made up of fibers of carbohydrate polymer called as cellulose. In bacteria cell walls are made up of peptidoglycan. In fungi cell wall is made up of chitin. Hydrophillic and hydrophobic structures found in cells of fungi and algae and double- layered membrane are features of cell membrane not of cell wall.          

ANSWERED AT 28/03/2020 - 11:48 AM

QUESTION POSTED AT 28/03/2020 - 11:48 AM

Why could humans not travel to a planet in the solar system Kepler-186f?

Though I don't know if I'm fully correct in my answer. I would say it is because we have not created a fast enough way to travel that distance and we have of course not made the technology to inanimate a person for long periods of time while keeping them completely in tact. Since humans can only live to a certain degree and it takes far too long to reach a planet in that solar system. While also the resources need for human survival would run out before making it as well, most likely.

ANSWERED AT 28/03/2020 - 11:46 AM

QUESTION POSTED AT 28/03/2020 - 11:46 AM

You farm kelp and sell the kelp for food and as fertilizer. The wastes from the kelp can be used in an integrated aquaculture system in which kelp farming can be coupled with farming of fish or abalone. Make an argument that you are using a sustainable system of growing a renewable resource, and explain why it is beneficial (and more sustainable) to couple algae farming with fish farming than simply to farm fish independently.

A sustainable system refers to producing less or probably non-existent debris that are caused by the production of a particular material (i.e. produce, energy). This is a sustainable form of production of coupling algae growth and fish farming because you no longer need the supply of fish feed from other sources that are made artificially but rather, you are using the available algae growth that you are culturing. Farm fishing alone is non-renewable because this produces much waste that can directly harm the environment.

ANSWERED AT 28/03/2020 - 11:34 AM

QUESTION POSTED AT 28/03/2020 - 11:34 AM

Which of the following does this chart represent? Promotes Growth Controls Tropisms Controls Budding Flowers Abscisis x Auxins x Cytokinins x Ethylene x Gibberallins x x A The completed plant tissues and the cells that initiate their growth B The relationship between different types of plant hormones and their functions C The differences between plant structures and the hormones they produce D The types of plant cells and their functions within the plant


Plant hormones are signalling molecules, produced b plants that regulate growth, development and other cellular processes of plants. There are five types of plant hormones, which include abscisic acid, auxins, cytokinins, ethylene, and gibberallins.

Given chart represents relationship between different plant hormones and their responses or functions. Auxin promotes plant growth, plays role in tropism, abscisic acid plays role in seed and bud dormancy, cytokinin promotes cell division, ethylene controls plant growth and stimulates flowering, and gibberallins cause stem elongation.

Thus, the correct answer is option (B).

ANSWERED AT 28/03/2020 - 11:22 AM

QUESTION POSTED AT 28/03/2020 - 11:22 AM

Which of the following best compares the male and female reproductive structures of a gymnosperm? A Gymnosperms produce flowers, and the male stamens produce pollen that fertilizes the egg inside the female ovule. B Gymnosperms produce male cones and female cones, and the pollen from a male cone fertilizes the egg inside a female cone. C Gymnosperms have male sporangia and female archegonia, and spores fertilize eggs contained inside the embryo sac to form zygotes. D Gymnosperms exist as male and female gametophytes, and the male plant produces spores that fertilize eggs inside the female archegonia.

Answer: B Gymnosperms produce male cones and female cones, and the pollen from a male cone fertilizes the egg inside a female cone.  

Gymnosperms are terrestrial plants, which lacks flowers. The ovule or seeds are remains naked in hard woody structures called as cones. In the gymnosperms the green sporophyte generates cones that contains male and female gametophytes. A male cone consists of microsporophylls where male gametophyte also called as pollen are produced and released into the wind. The wind act as a agent for pollinating the female gametophyte present in the female cone.  Inside the female cone the megaspore mother cell produces four haploid megaspores, one megaspore divide itself to form the female gametopyte. The fusion of the pollen with the female gametophyte produces diploid zygote, which later on divides to form the embryo.

ANSWERED AT 28/03/2020 - 11:15 AM

QUESTION POSTED AT 28/03/2020 - 11:15 AM

Cells created by sexual reproduction _____. are identical to the parent cell contain genetic material from both mother and father are usually prokaryotic do not differentiate

Cells created by sexual reproduction contain genetic material from both the mother and father.

ANSWERED AT 28/03/2020 - 11:15 AM

QUESTION POSTED AT 28/03/2020 - 11:15 AM

Which of these is involved in asexual reproduction in a plant? A. nut B. fruit C. bulb D. cone

The answer is C :) hope I helped

ANSWERED AT 28/03/2020 - 11:09 AM

QUESTION POSTED AT 28/03/2020 - 11:09 AM

interplanetary space missions are missions that study what ? the moon the sun planets in the solar system stars in other galaxies

The answer is C. Planets in the solar system, I just did the test. Hope this helps :).

ANSWERED AT 28/03/2020 - 11:00 AM

QUESTION POSTED AT 28/03/2020 - 11:00 AM

Bacteria, like the Lactobacillus acidophilus use sugar as an energy source for anaerobic cellular respiration. This process produces much less ATP than aerobic respiration and does not produce carbon dioxide as a by-product. It does, however, give yogurt its sour taste and prevents other food spoiling bacteria from developing. This is a description of A) phosphorylation. B) alcohol fermentation. C) lactic acid fermentation. D) the electron transport system.

Answer is C) lactic acid fermentation.

Lactic acid fermentation is a metabolic process by which sugar is converted into cellular energy and lactate or lactic acid in solution. No carbon dioxide is evolve in the process. This conversion is done by lactobacillus bacteria in absence of oxygen. The bacteria that make yogurt carry out lactic acid fermentation.

ANSWERED AT 28/03/2020 - 10:57 AM

QUESTION POSTED AT 28/03/2020 - 10:57 AM

How does the structure of a mitochondrion help enable its function?

Because of the folds of the cristae, no part of the matrix is far from the inner membrane

ANSWERED AT 28/03/2020 - 10:46 AM

QUESTION POSTED AT 28/03/2020 - 10:46 AM

HELP! 25 POINTS!!! A baby's first breath initiates a series of changes that includes which of the following? A. The ductus venosus and ductus arteriosus both open. B. The ductus venosus and ductus arteriosus both close. C. The ductus venosus opens, and the ductus arteriosus closes. D. The ductus venosus closes, and the ductus arteriosus opens. Please answer and explain!!!!

The most profound change at birth is your baby’s first breath. At this point, your baby’s lungs, which were filled with fluid during pregnancy, must suddenly fill with oxygen from the air. The fluid in the lungs is removed through the blood and lymph system, and is replaced by air. Your baby’s lungs must be able to exchange oxygen for carbon dioxide. At the same time, vigorous blood circulation in the lungs will begin. The first few breaths after birth may be the most difficult breaths your baby will take for the rest of her life.

There are a couple of things that will stimulate your baby to take her first breath. Hormonal and other changes during labour slow down or stop the production of fluid in the lungs, and may initiate the reabsorption of fluid from the lungs. This process is unlikely to have occurred if labour was very short or did not occur at all, for example, if your baby was delivered by caesarean section. Furthermore, physical stimulation and handling during delivery will encourage your baby to breathe. There are probably many other factors that stimulate baby’s first breath, but they have not been identified yet.

Your baby will need to work very hard to take her first breath, and her first few breaths may be shallow and irregular. With each breath after birth, more air will accumulate in her lungs, which will make it easier for her to breathe. After a few breaths, your baby will be able to breathe more easily, and her breaths will start to become deeper and more regular.

As the fluid in your baby’s lungs is replaced by air, the increased amounts of oxygen will stimulate a blood vessel close to her heart called the ductus arteriosus to begin closing. The ductus arteriosus was important to your baby’s body before birth, to divert blood away from the lungs. After birth, your baby needs blood to circulate through the lungs, and therefore, the ductus arteriosus is no longer needed. The ductus arteriosus usually closes during the first or second day of life. At this point, your baby’s heart will pump and circulate blood in much the same way as an adult’s heart. The transition from fetal to adult circulation can take minutes or hours. Problems with your baby’s colour or breathing may be related to this delayed transition.

ANSWERED AT 28/03/2020 - 10:36 AM

QUESTION POSTED AT 28/03/2020 - 10:36 AM

The central vacuole in a plant cell is responsible for turgor pressure. When the vacuole loses water the cytoplasm "shrinks". When the vacuole gains water the cytoplasm seems to "puff up". One structure helps the plant cell keep its shape no matter how much water is in the vacuole. This is the A) cell wall. B) cytoplasm. C) cytoskeleton. D) cell membrane.


The correct answer would be A) cell wall.

In a plant cell, the cell wall is the outermost layer mainly composed of cellulose. It provides protection, support, structure et cetera to the cell.

It provides mechanical support and strength to the cell and regulates the direction of cell growth.

It helps the cell in withstanding the turgor pressure and thus, helps in preventing the bursting of a plant cell in hypotonic solutions. In addition, it also prevents the shrinkage of the cell in hypertonic solutions.

It also protects the cells from invading pathogens such as viruses.

ANSWERED AT 28/03/2020 - 10:30 AM

QUESTION POSTED AT 28/03/2020 - 10:30 AM

My mother, along with all of my godparents, began planning my quinceañera after I turned fourteen. My mother and aunts took me to a bridal shop where I was fitted for a long, white gown, which I would wear at the celebration. I felt my cheeks grow red with embarrassment as the women fawned and fussed over me in the store. I desperately wished that I could just find a hole to crawl into and hide, but there was no way out. My mother, who was in her glory, naturally assumed that the redness in my face was a glow of happiness. I let her go right on thinking that. It was her day, I kept telling myself. I was doing this for her. At last, the big day came. My father cooked up a special breakfast for my brothers and me first thing that morning. I had a queasy feeling in the pit of my stomach, but I was somewhat comforted by my father's easygoing manner and his apparent anticipation of the celebration ahead. After breakfast, my mother helped me dress for the quinceañera. While she was styling my hair, she paused every so often to wipe away a tear of joy that had trickled down her face. I couldn't recall ever having seen my mother quite this happy, and suddenly my heart swelled with affection for her. Two hours later, I found myself standing in the front of a church while all of my dearest friends and family members gazed up at me from the pews. As I looked out on the smiling, supportive faces of all the people I loved, I had an unexpected realization. This day wasn't for my mother after all; it was for me. The church ceremony was followed by a fiesta that lasted all day and into the night. My parents served food that they had worked for days to prepare. A disc jockey played all of the music I loved, and I was showered with beautiful gifts, practical advice, and good wishes from everyone important to me. As I watched my family members celebrate in my honor, I realized that my Mexican heritage was not something intangible, like a bunch of old stories about long-gone relatives. My heritage, I realized, was very real. It was with me at all times, and I was proud of it. What is the purpose of this essay?

To entertain/or to tell a story

ANSWERED AT 28/03/2020 - 10:27 AM

QUESTION POSTED AT 28/03/2020 - 10:27 AM

The four major Earth systems are the atmosphere, lithosphere, hydrosphere, and geosphere.

The last one be biosphere. hope that helped

ANSWERED AT 27/03/2020 - 12:47 PM

QUESTION POSTED AT 27/03/2020 - 12:47 PM

This is one result of gamete formation through meiosis and fertilization during sexual reproduction that promotes biodiversity within a species.

genetic variation is the correct answer

ANSWERED AT 27/03/2020 - 10:11 AM

QUESTION POSTED AT 27/03/2020 - 10:11 AM

What body system manufactures hormones to regulate organ activity?

Endocrince system i think

ANSWERED AT 26/03/2020 - 03:12 PM

QUESTION POSTED AT 26/03/2020 - 03:12 PM

Mammals and birds have four-chambered hearts and fully divided pulmonary and systemic circulations. the circulatory systems of reptiles and amphibians are sometimes presented as “inferior” because pulmonary and systemic circulations are not completely separate. what might be an advantage to incompletely separated circuits in these organisms?

Based on the given description above regarding birds and mammals that possess four-chambered hearts with fully divided pulmonary and systemic circulations, what makes the incomplete separation of circuits in these organisms advantageous is that the distribution of the blood flow can be adjusted whether the organism is breathing through its lungs or not. Hope this helps.

ANSWERED AT 26/03/2020 - 02:39 PM

QUESTION POSTED AT 26/03/2020 - 02:39 PM

Explain how the respiratory system and the circulatory system work together to respond to your body's needs during vigorous exercise

The respiratory system helps import oxygen into your body and the circulatory system runs that oxygen through out your body which creates carbon dioxide, so the respiratory system takes and exports the carbon dioxide out of your body.

ANSWERED AT 26/03/2020 - 02:36 PM

QUESTION POSTED AT 26/03/2020 - 02:36 PM