Answer:
HI :)
Explanation:
What Are Bones and What Do They Do?
Bones provide support for our bodies and help form our shape. Although they're very light, bones are strong enough to support our entire weight.
Bones also protect the organs in our bodies. The skull protects the brain and forms the shape of the face. The spinal cord, a pathway for messages between the brain and the body, is protected by the backbone, or spinal column. The ribs form a cage that shelters the heart and lungs, and the pelvis helps protect the bladder, part of the intestines, and in women, the reproductive organs.
Bones are made up of a framework of a protein called collagen , with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it's needed by other parts of the body. The amounts of certain vitamins and minerals that you eat, especially vitamin D and calcium, directly affect how much calcium is stored in the bones.
Bones are made up of two types of bone tissues:
Compact bone is the solid, hard outside part of the bone. It looks like ivory and is extremely strong. Holes and channels run through it, carrying blood vessels and nerves.
Cancellous (pronounced: KAN-suh-lus) bone, which looks like a sponge, is inside compact bone. It is made up of a mesh-like network of tiny pieces of bone called trabeculae (pronounced: truh-BEH-kyoo-lee). This is where bone marrow is found.
In this soft bone is where most of the body's blood cells are made. The bone marrow contains stem cells, which produce the body's red blood cells and platelets, and some types of white blood cells. Red blood cells carry oxygen to the body's tissues, and platelets help with blood clotting when someone has a cut or wound. White blood cells help the body fight infection.
Bones are fastened to other bones by long, fibrous straps called ligaments (pronounced: LIG-uh-mentz). Cartilage (pronounced: KAR-tul-ij), a flexible, rubbery substance in our joints, supports bones and protects them where they rub against each other.
How Do Bones Grow?
The bones of kids and young teens are smaller than those of adults and contain "growing zones" called growth plates. These plates consist of multiplying cartilage cells that grow in length, and then change into hard, mineralized bone. These growth plates are easy to spot on an X-ray. Because girls mature at an earlier age than boys, their growth plates change into hard bone at an earlier age.
Bone-building continues throughout life, as a body constantly renews and reshapes the bones' living tissue. Bone contains three types of cells:
osteoblasts (pronounced: AHS-tee-uh-blastz), which make new bone and help repair damage
osteocytes (pronounced: AHS-tee-o-sites), mature bone cells which help continue new born formation
osteoclasts (pronounced: AHS-tee-o-klasts), which break down bone and help to sculpt and shape it
What Are Muscles and What Do They Do?
Muscles pull on the joints, allowing us to move. They also help the body do such things as chewing food and then moving it through the digestive system.
Even when we sit perfectly still, muscles throughout the body are constantly moving. Muscles help the heart beat, the chest rise and fall during breathing, and blood vessels regulate the pressure and flow of blood. When we smile and talk, muscles help us communicate, and when we exercise, they help us stay physically fit and healthy.
Humans have three different kinds of muscle:
Skeletal muscle is attached by cord-like tendons to bone, such as in the legs, arms, and face. Skeletal muscles are called striated (pronounced: STRY-ay-ted) because they are made up of fibers that have horizontal stripes when viewed under a microscope. These muscles help hold the skeleton together, give the body shape, and help it with everyday movements (known as voluntary muscles because you can control their movement). They can contract (shorten or tighten) quickly and powerfully, but they tire easily.
Smooth, or involuntary, muscle is also made of fibers, but this type of muscle looks smooth, not striated. We can't consciously control our smooth muscles; rather, they're controlled by the nervous system automatically (which is why they're also called involuntary). Examples of smooth muscles are the walls of the stomach and intestines, which help break up food and move it through the digestive system. Smooth muscle is also found in the walls of blood vessels, where it squeezes the stream of blood flowing through the vessels to help maintain blood pressure. Smooth muscles take longer to contract than skeletal muscles do, but they can stay contracted for a long time because they don't tire easily.
Cardiac muscle is found in the heart. The walls of the heart's chambers are composed almost entirely of muscle fibers. Cardiac muscle is also an involuntary type of muscle. Its rhythmic, powerful contractions force blood out of the heart as it beats.
Tamika had added young koi fish to her waterfall pond and had them for over a year until they all suddenly started dying. She talked with a neighbor, who also had koi fish that died a few years ago at a relatively young age. Which of the following could be a possible reason for why the fish died?
a) Caring for the fish is difficult, and the fish need to be talked to in order to survive any length of time.
b) Pesticides from the farm up the road made their way into the pond and poisoned the fish.
c) The contents in the fish food could not be metabolized by the koi.
d) The neighborhood cat watched the fish swim in the pond.
Answer:
B. Pesticides from the farm up the road made their way into the pond and poisoned the fish.
Explanation:
Why shouldn't you drink alcohol or coffee if you have hypothermia?
What two characteristics must a question have to be a valid scientific
Answer:
A good scientific question has certain characteristics. It should have some answers (real answers), should be testable (i.e. can be tested by someone through an experiment or measurements), leads to a hypothesis that is falsifiable (means it should generate a hypothesis that can be shown to fail), etc.
Hope it helps you.two ways grasshoppers are adapted for eating grass
Answer:
Grasshoppers have long, strong hind legs that help them jump. This adaptation helps them get away from predators, and jump over tall grasses
giving brainliest!!
The monomers, or small units, used in the synthesis of DNA molecules are called
disaccharides
amino acids
nitrogenous bases
nucleotides
Answer:
D. nucleotides
Explanation:
The monomers of DNA are called nucleotides. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue. The four bases are adenine (A), cytosine (C), guanine (G) and thymine (T). The sugar and phosphate create a backbone down either side of the double helix.
D. Nucleotides.
Nucleotides are the name given to DNA's monomers. A backbone is formed by the sugar and phosphate down either side of the double helix.
What is the synthesis of DNA?These nucleotide units bind together to produce DNA, which can happen naturally or artificially (in vitro) (in vivo). A nitrogenous base (cytosine, guanine, adenine, or thymine), pentose sugar (deoxyribose), and phosphate group make up a nucleotide unit.
DNA replication is the process through which new DNA strands are created in living cells.
All living cells in the natural world synthesize DNA molecules through the process of DNA replication. This frequently happens during cell division. DNA replication happens so that each daughter cell has a precise copy during cell division.
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Any change in the nucleotide sequence of DNA is called a?
-mutation.
-frameshift.
-O base substitution.
Answer:
mutation
Explanation:
As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation.
A cat jumped off a shelf. It has 40 Joules of Mechanical Energy and 16 Joules of Kinetic Energy. What is the Potential Energy? (ENTER THE NUMERICAL VALUE ONLY)
Answer:
24 Joules
Explanation:
The formula is mechanical energy = kinetic energy + potential energy. So in order to find the potential energy you will need to reverse it.
Mechanical energy- Kinetic energy= Potential energy.
40- 16= 24
Answer: 24 Jolues.
Hope this helps!
Dạ dày nối tiếp với thực quản qua
Answer:plz mark me as a brainlist
Explanation:
The lower esophageal sphincter (LES) is a bundle of muscles at the low end of the esophagus, where it meets the stomach.
The ear is on the blank surface of the head
Answer:
The ear is on the blank surface of the head is the most superier
Explanation:
9.During exercise, blood flow to skeletal muscles increases. The initial response that increases blood flow is automatic in independent of the nervous and endocrine systems. Which type of homeostatic regulation is this (extrinsic or intrinsic)
Answer:
Extrinsic Homeostatic Regulation
Explanation:
Extrinsic homeostatic regulation requires input from nervous system or endocrine system. The skeletal muscles are independent on the nervous and endocrine system, so therefore the homeostatic regulation is extrinsic.
To most effectively study the effect of peptide a on transcription of the osteoblatin gene, a scientist should determine the:____.
A) sequence of the osteoblatin gene.
B) amount of osteoblatin mRNA in the cell.
C) amount of osteoblatin peptide in the cell.
D) total RNA in the cell.
Answer:
A
Explanation:
Because you need to do the observation first
a essay explaining why i choose a certain university
Answer:
Because the facilities here for my subject are second to none” – this shows that your subject has been at the forefront of your mind when making a sensible choice of university, again demonstrating your level of commitment to it. You can mention specific facilities to show that you’ve read into it thoroughly.
“Because I liked the approach this university takes to my course” – even within the same subject, every university takes a slightly different approach to the way it’s taught and structured. The university question is another good opportunity to show that you’ve really thought about the course and gone to the effort of finding a university whose approach to the subject you agree with. You can even name specific modules that set this university’s course apart from the others offering the same subject.
Along similar lines, you could also mention the university’s great reputation for your subject, or the presence of certain lecturers you feel inspired by (though don’t let this last point dominate your answer; lecturers often move about or go on sabbatical, so even if there’s a particular academic you admire, they may not end up teaching you).
Explanation:
hope this helped :)
What is the per capita growth rate of the global human population?
A.) negative
B.) fluctuating
C.) positive
D.) zero
Answer:
positive
Explanation:
The global human population has been steadily increasing in size for hundreds of years.
2.
1. Which of the following organs functions as
part of the genitourinary system to maintain
blood pressure?
A. Heart
B. Kidney
C. Urinary bladder
D. Ureter
Answer:
B. Kidney
Explanation:
The kidneys play a central role in the regulation of arterial blood pressure. A large body of experimental and physiological evidence indicates that renal control of extracellular volume and renal perfusion pressure are closely involved in maintaining the arterial circulation and blood pressure
What are the main morphological differences between monocots plant and dicots
Answer:
MONOCOTS DICOTS
Embryo with single cotyledon Embryo with two cotyledons
Pollen with single furrow or pore Pollen with three furrows or pores
Flower parts in multiples of three Flower parts in multiples of four or five
Major leaf veins parallel Major leaf veins reticulated
Stem vacular bundles scattered Stem vascular bundles in a ring
Roots are adventitious Roots develop from radicle
Secondary growth absent Secondary growth often present
Explanation:
Please refer to it because I am not sure but hope it helps you!
___ are non green organism with bodies usually made up of thread like structures
Answer:
chromoses are non green organisms with bodies usually made up of thread like structure
Answer:
Chromosomes are non-green organisms with bodies usually made up of thread-like structures.
Explanation:
During New Moon, when does the Moon set?
Answer:
New Moon Rises at sunrise, transits meridian at noon, sets at sunset
Explanation:
PLS mark it brainliest
Genes are composed of DNA and located on structures called
Answer:
DNA and histone proteins are packaged into structures called chromosomes
describe how the human body maintains the carbon dioxide consetration in the blood when it rises above normal limits
Answer:
carbonic anhydrase helps to maintain the acid-base balance in the bloodstream and is present in high concentration in erythrocytes
Explanation:
as levels of CO2 in the blood begins to rise,the body can respond through hypoventilation or hyperventilation respectivelyAs degrees of CO2 in the blood begin to upward push, the body can reply through hyperventilation or hypoventilation, respectively. The CO2 is sure to hemoglobin paperwork a carbamino compound. In circumstances in which the CO2 and H+ concentrations are excessive, the affinity of hemoglobin for O2 is reduced.
How does the frame adjust the quantity of carbon dioxide within the blood?The blood consists of carbon dioxide to the lungs, where it's miles exhaled. As carbon dioxide accumulates in the blood, the pH of the blood decreases (acidity will increase). The mind regulates the quantity of carbon dioxide that is exhaled by controlling the rate and depth of respiration (airflow).
How does the frame alter blood oxygen ranges?The carotid frame represents an international oxygen-sensing mechanism in mammals. whilst the glomus cells within the carotid frame locate hypoxia, they may be depolarized and ship signals to the respiratory centers within the medulla oblongata to boom respiration price.
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pls help me for number 9 !! : ) ( Science )
Answer:
it is the life process of butterfly
2) Jumping Pool *
1 point
vou
Gravitational force.
Frictional force.
O Magnetic force.
O Elastic force.
O i don't know.
Answer:
what type of answer do you want
why mesophyll cell is considered as parenchyma cell
Answer:
Mesophyll is not a tissue technically speaking. It's just a place, a specific area. Or you can even think of it as the set of all tissues in a given area.
homeostasis in a sentence
why do fungeses have so mushroom? because they are hufungus.
Answer:
The fruiting bodies of fungi grow on wood chips, shredded bark and other mulches, and the resulting mushrooms may look unsightly but are mostly harmless. Fungi help break down dead organic matter, providing nutrients for plants. The mushrooms they grow emit spores that spread the fungi to new areas.
As you walk down the hall on the way to class, several students sneeze. You unknowingly inhale some of the droplets
that were expelled when they sneezed, allowing the flu virus to enter your body. Explain the nonspecific immune
defenses that the virus must bypass in order to infect a body cell. (5 points)
Answer:
The innate or nonspecific immune system includes two lines of defense in the human body. Non-specific means that it does not act on the specific pathogen. It works equally to keep all types of pathogens such as bacteria, viruses, parasites et cetera out of the body. The first line of defense includes physical barrier which prevents the entry of pathogens into the body. It includes skin, respiratory tract, gastrointestinal tract, cilia, nasopharynx, eyelashes, and body hairs.
The second line of defense includes anti-inflammatory responses, fever, and nonspecific cellular responses such as phagocytes, macrophages, complement system et cetera. Thus, the virus has to pass physical, chemical, and nonspecific cellular responses of the body in order to infect the body.
Explanation: I found this answer on a different site and it was right, no need to thanks me, no problem
The antiviral defense is composed of changes in cells that prevent viral replication and increase susceptibility to death by lymphocytes.
What innate defense mechanism against viruses?Viral replication interferes with protein synthesis and cell function and leads to injury and death of the infected cell. The main mechanisms of innate immunity against viruses are inhibition of type I interferon infection and NK cell-mediated destruction of infected cells.
With this information, we can conclude that the antiviral defense is composed of alterations in the cells that prevent viral replication and increase the susceptibility to death by lymphocytes, thus eliminating the reservoirs of viral infection.
Learn more about viral infection in brainly.com/question/3613320
What is epistasis?
traits where one gene interferes with the effect of another
traits whose genes are inherited separately
traits whose genes are inherited together
when a single gene controls a trait
Answer:
A
Explanation:
traits where one gene interferes with the effect of another
PLEASE HELP ASAP FAST PLEASE
Answer:
sorry again
it's an MCQ test
biology
brown
In the current public health model, trying to reduce the impact of disease or injury that has already occurred is an example of ____________________________ prevention.
a. Primary
b. None of the above
c. Secondary
d. Tertiary
Answer:
d. Tertiary prevention.
Tertiary prevention aims to soften the impact of an ongoing illness or injury that has lasting effects.
Explanation:
this is because it has already occurred and no one was able to attend to it. so you trying to work on it makes it unique.
why pancreas is called both exocrine and endocrine gland?
Answer:
This question is in my stored notes read below
Explanation:
Pancreas is an exocrine gland as it has a duct to store pancreatic juice secreted by the pancreas and use it whenever required. It is considered as a endocrine gland as it does not have a duct to store the hormones insulin and glucagon which are directly supplied to the blood stream.
Determine the percent increase per year from 1999 to 2004
Answer:
Hey bud, I saw this was your first question. You need to attach some files to your question in order for us to see it. You can do that by using the Paperclip shaped icon on the bottom when you are making a question.
Explanation: