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Questions tagged [bone-biology]

Study of the structural component of the vertebrate skeleton. Bone is a dense connective tissue composed of various cell types as well as collagen and mineralized calcium.

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To what extent is the angle of the mandible genetic vs. epigenetic?

Is there any scientific literature or studies that can confirm whether the angle of the mandible and/or gonial angle are more strongly influenced by genetics or epigenetics, AKA puberty/hormones/...
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24 views

Are there any ways to increase total body skeletal mass? [on hold]

I want my whole skeletal system to gain 5-10+ lbs. or so and look thicker, including the facial bones. Does HGH/IGF-1/etc. increase total body bone mass/volume/etc.? I have read some studies but can'...
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Are there any non-surgical ways to increase facial-width-to-height ratio? [closed]

Source. Aside from surgery (including any form of cosmetics even if non-invasive), what can increase this measurement? Drugs? Exercises? Diet? Gene expression? I want to know my options.
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78 views

Is there any way bicondylar/bigonial, bizygomatic or bitemporal breadth can change in adults?

Without cosmetic surgery or etc., are there any cases/example wherein a human adult has had a change in significance regarding these regions of the face? I have seen many anecdotes where people have ...
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Spine found on the beach

Can someone please tell me which animal does this spine belong to? I found it today on the beach..
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48 views

Is there any evidence that Vitamin K-2 megadoses increase bicondylar, bizygomatic or bitemporal breadth in humans?

Can megadosing or supraphysiological dosing of Vitamin K2 (MK4; Menatetrenone) over prolonged periods of time cause an adult's bicondylar breadth, bizygomatic breadth or bitemporal breadth to grow ...
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2answers
40 views

Organ and Bone Marrow Transplantation?

In organ transplantation the transplant is rejected by the body's immune system , but is it possible if along with organ transplant if bone marrow transplantation is carried out from the same donor , ...
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47 views

Trying to identify the species to which this vertebrae belongs

Found vertebrae in the "graveyard of the Atlantic" (on account of the 5,000+ shipwrecks since the 1520's) off Frisco/Hatteras, North Carolina. Tried searching online but not finding any perfect ...
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1answer
78 views

What animal is this bone from?

10.5 ounces, found laying on ground, central California coast.
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1answer
73 views

Can the face bones be “compressed” or forced together? What would happen? [closed]

Say someone doesn't like that their maxilla bone is too long because the height of the maxilla affects the placement, position and angle of the mandible relatively. If one were to apply mechanical ...
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1answer
184 views

Identify a lone bone (jaw including teeth) found on a beach at Trouville-sur-Mer (France) in 2018

Found this on the beach at Trouville-sur-Mer in France, on 11 May 2018. It was laying in the sand, close to a trash can. Considering the strong smell of sand within the skeleton, it must have been ...
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1answer
60 views

Are there any proven ways to increase the rate of bone remodeling in humans?

I'm not asking for anything specific -- just wondering if there's any data, studies, or etc. that show a possibility in increased bone resorption and turnover (bone remodeling/Wolff's Law) from ...
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Why can't wax therapy be done by using anasthesia?

I heard about the paraffin wax therapy which is used in case of injury, arthritis etc.The hand is dipped in hot molten wax 4 or 5 times and then the wax layers are taken off after solidification (10-...
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1answer
176 views

Might new bones evolve from soft tissue? [closed]

I wonder how bones evolve where there are none. (This is the question, read the sub-questions as examples :) ) Lets take an elephant as an example. If it was adaptive for the elephant, could bones ...
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Considering the function, how does the bone tissue is a connective tissue?

As we considering the materials which consists of the bone tissue we can clearly see ,it is a type of connective tissue. But considering the function, its main function is building the Skeleton. ...
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Exhaustion of skeletal muscle and ligaments

I read somewhere that while doing lifting back should be straight(means normal curve), so that erectors muscle in back do the work but it gets tired easily. Hence we form curve on our back like when ...
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198 views

Can hypertrophy of the temporalis muscle and masseter muscle widen the zygomatic process?

If one hypertrophies the masseter muscle and temporalis -- both muscle groups that run underneath the zygomatic process/arch bone that rests and makes up the side of the human face and connects to the ...
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26 views

examples of transitional fossils showing development of internal skeleton

What fossils exist that show the development of skeletons, and muscles attached to bones?
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1answer
2k views

Why can't we move our toes and some fingers separately? [duplicate]

In our feet, other than the large toe, the other toes cannot be moved separately. If we try to move them, then all the four toes move together. We cannot move each toe by itself. Same thing occurs in ...
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1answer
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Why is the head/neck of the femur at that 120-150 degree angle?

I'm just wondering why the femur is such that there is that head and neck sticking out of the top at an angle, why it isn't just straight up into the hips?
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Human spine: Is the coccyx really fused?

Prologue: This post is about the adult (say, a 20 year old) human skeleton; I'm not particularly interested in infant skeletons. The human spine has is composed of cervical, thoracic, lumbar, sacral ...
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Is osteoid an uncalcified substance?

I recently learned about Osteoid (the substance secreted by osteoblasts during intramembranous ossification), and I read that it was an "unmineralized organic component of bone." Now, does this mean ...
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220 views

This is the bone of which animal? And which bone?

so this bone was found on a construction site in Paris and I was wondering from which animal does it come from?
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Intervertebral joint

My anatomy book states that the intervertebral joint is a secondary cartilaginous joint, but in another book I read that the intervertebral joint is non axial synovial joint. I got confused. Is it ...
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1answer
185 views

Identify these hinged barbed bones

My daughter Stella and I found these bones on the shore of Port Phillip Bay, Victoria, Australia. The smaller, barbed bone is attached by a hinged joint that allows it to move through just over 90 ...
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Is an adaptation against impact of fall a factor in babies' bones' structure?

Obviously, babies' bones need to be flexible to get through the pelvic bone. But is that the only reason? Could it be that as babies aren't able to maintain stability, they need bones less prone to ...
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1answer
571 views

What purpose do the opening(s) serve in diapsid and synapsid skulls?

Did synapsid skulls evolve from diapsid skulls or vice versa? Aditionally, do birds have diapsid skulls? The research I have done has yielded some mixed results.
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1answer
660 views

Identifying a lone bone found newar Rowena Crest, Oregon (USA)

I was wondering whether anyone knows how to identify what animal the following bone belongs to. I assume it a femur, but it seems rather short and squat. The following photos show two views of this ...
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1answer
2k views

What is head of a bone?

For most of the long bones head is the proximal end, but for metacarpals and Ulna, head is the distal end. Why are their distal ends called as heads? What's the criteria for calling an end as head ...
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133 views

Is it possible to make bones ossify much slower in adults?

According to Can we artificially increase human growth using HGH, But during normal human development bones ossify in the process, and in human adults the bones are completely ossified and can't ...
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0answers
227 views

Why does the clavicle ossify intramembraneously?

The clavicle is the only long bone which ossifies as a membrane bone. I studied this process, but I can't find the reason why it features intramembraneous ossification?
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1answer
514 views

Can skeletal morphology change in adults?

I'm just a curious layman, so be gentle. I read around that things like the cranial1 and pelvic2 morphology change with age, but I also read seemingly contradictory information that bones are '...
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96 views

Difference in callus formation during healing of bones of different origin

My study material from pathology states that during fracture healing after hemorrhage and coagulum formation the mesenchymal progenital cells from periostium that are closer to the fracture ...
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703 views

Three foramen lying in one vertical plane

In the human skull we can see that 3 foramina named as supraorbital notch(foramen) , infraorbital foramen and mental foramen share a common vertical plane. Is there any surgical significance of for ...
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Bone fracture cause [closed]

I had bone fracture twice in the same arm. So I had first bone fracture in right forearm with 45 degree break on two bones, after 3 months of that fracture while I was climbing a slope I fell and I ...
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0answers
587 views

Why are sutural bones more common in lambdoid suture? [closed]

Why are sutural bones (Wormian bones) are more commonly present at lambdoid suture? Is the tortuous nature of lambdoid suture a reason for that? Evidences for my claim: They(sutural bones) occur ...
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0answers
26 views

What is the average age of my flesh and my bone?

A study reported in the New York Times on August 2, 2005, claims that the average age of all cells in a middle age human is 7-10 years. This was based on new techniques at the time that allowed for ...
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1answer
550 views

How does cartilage become bone? [closed]

It's a famous fact that bones begin as cartilage and later become bone, but I never was clear how exactly this changeover occurs. Could someone please explain this to me?
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1answer
2k views

Can you bleed from your bones?

I was talking to my science teacher about the body specifically the red bone marrow. She said that blood is created in the red bone marrow. Does that mean that if you were to cut a fresh bone open ...
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1answer
355 views

How does bone marrow acts like a valve?

Wikipedia says: Furthermore, bone marrow performs a valve-like function to prevent the backflow of lymphatic fluid in the lymphatic system. How can bone marrow act like a valve eventhough they ...
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197 views

Is there any liquid in the bone medullary cavity

I am looking at the effect of intramedullary nails on tibial bones and can't seem to find anything on fluids present within the medullar cavity/canal. Since this is where blood cells are formed I ...
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1answer
139 views

Do Osteichthyes fishes have any cartilage?

Higher vertebrates, such as mammals, birds, reptiles and amphibians have both bone and cartilage. But do Osteichthyes fish (Bony fish) have any cartilage? Or do they only have bones? I've searched ...
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1answer
15k views

Why do we have the tibia and fibula (a 2nd bone) in the lower leg?

Does fibula participate in rotational movement of ankle or not (just like the radius in forearm)? If not, what is the purpose of that bone?
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1answer
473 views

I need some forearm bone motion pictures

I would like to know how my forearm bones move inside my forearm when I'm twisting my hand. (Also, it would help to see the hand bones action too). "twisting hand" means to me the motion in which the ...
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1answer
254 views

How do marine mammals and penguins maintain bone density?

After much searching on Google with no results, I decided to ask my question here. If I'm not mistaken, swimmers' bone density is less than normal; at least for lifetime swimmers. Astronauts also ...
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Could we restore some animal's muscle structure by it's bone?

Suppose that elephant dies out one day, nothing left to researchers but the fossil. Could fossil infer the existence of large nose? If there is possibility, how exactly should they perform the ...
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1answer
236 views

Can magnetoreception occur in humans?

Magnetoreception is a sense which allows an animal to detect the Earth’s magnetic field in order to perceive direction, altitude, or location. Magnetoreception is present in bacteria, arthropods, ...
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2answers
734 views

At what age does the mouse skull stop growing?

Unless otherwise mandated, neuroscientific research on mice is done with ~7-week old animals. There is a sort-of mantra that at this age their skulls stop growing. However, recently, I noticed a ...
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374 views

Why were dinosaur skeletons so light compared to mammal skeletons?

I was watching a presentation by Dr. Jessica Theodor [1] who discusses (at 38:10), among other things, the skeletal structure of dinosaurs vs. mammals. "Dinosaurs have way lighter skeletons, which ...
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Stable isotope sample preparation: Bone Collagen

I am performing research in which I need to extract bone collagen from the foot bones of American Beaver (Castor canadensis). I have read through the literature fairly thoroughly on both the ...