Questions tagged [human-anatomy]
This tag is for questions about the general anatomical features of human beings as opposed to the anatomy of non-human animals.
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0answers
35 views
What is the Speed limit of thinking or doing other things?
Is there something like speed limit of thinking or doing something physically? I mean when babies born, they learn everything with copying from other humans. Humans are live in some standard interval ...
-1
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0answers
19 views
is it possible to do some thing for 14 years boy who growth plate are closed? [on hold]
i have 14 years-old boy .yesterday doctor said his growth plate (wrist and knee x-ray)are closed .he is 173cm and he shock and upset. is it possible to do something for him grow 4 -5 cm more ? is 14 a ...
1
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0answers
50 views
Could an uncut umbilical cord benifit a baby?
How long and would there be any benefit like adding an IV line to the uncut umbilical cord after a baby is born?
Can keeping the umbilical cord attached (and for how long) be beneficial or harmful ...
-1
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0answers
32 views
What is the purpose of brow ridges in primates?
What is the purpose of brow ridges in primates? Why are they universal in anthropoids but not prosimians? Why don’t humans have them? How do they affect perception, notably vision? Do they protect the ...
0
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0answers
20 views
What is the significance of different types of papillae present on tongue?
Fungiform, Circumvallate, Filiform, Foliate Papillae are present on the surface of the tongue. They have a role in increasing surface area for taste buds that can be accommodated on the tongue. Each ...
0
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1answer
14 views
What's the subpatellar tendon?
I read in Thomas Myers book Anatomy Trains:
Although the muscles themselves have attachments within the anterior
compartment to the tibia, fibula, and interosseous membrane, the next
station ...
0
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0answers
8 views
Is occipital ridge a synonym for the inferior nuchal line?
I'm reading different sources about anatomy and it seems to me like occipital ridge is a synonym for the inferior nuchal line but I'm not sure. Is it, or does the term occipital ridge refer to a ...
0
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0answers
10 views
How does shoulder rotation work when the arm is overhead?
Anatomy references state that the humerus is externally rotated by infraspinatus, and teres minor, and internally rotated by subscapularis.
All the illustrations I can find of these muscles have the ...
-2
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2answers
93 views
Why we can't feel our internal organs?
We have lungs,kidneys, stomach etc.But why we can not feel them consciously?
1
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1answer
20 views
Is “muscular attachment” synonymous to tendon? (when talking about the insertion of glutei medius and minimus to greater trochanter of the femur)
I have read the following two terms in an MRI report (both points refer to the insertion of gluteus medius/minimus to greater trochanter of the femur):
mild degeneration of the muscular attachment ...
1
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1answer
47 views
Where does the gluteus medius attach to the greater trochanter compared to the gluteus minimus attachment?
Where does the gluteus medius attach to the greater trochanter of the femur compared to the gluteus minimus attachment? Is it above, below, next to it, etc.? Ideally I'd like to know the distance as ...
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0answers
27 views
Pronation of forearm
According to the figure below, the ulna and the radius are rotated together during the pronation of forearm. However, to my knowledge, the proximal radio-ulnar joint at the elbow is a hinge joint. How ...
0
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0answers
25 views
Why different people have different Sympathetic reaction
We all know that sympathetic mechanism is similiar in humans . Why people react differently for example one may ran after seeing a lion while other may keep standing or may shout without escaping ?
1
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1answer
78 views
Do the left half and right halves of the diaphragm undergo the same displacement during breathing?
Do the left half and right halves of the diaphragm of a normal person move exactly the same distance between inhaling and exhaling?
2
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0answers
30 views
Is the tendon width determined by genetic predisposition, and if so, is genetics the sole factor?
Tendons' widths vary widely across humans. E.g.:
{1}: "the mean patellar tendon width was 26.10mm (SD = 3.31; range 18.33mm-33.33mm)"
{2}: "Size of the patellar tendon width, measured at the same ...
0
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0answers
12 views
How do viable sperm persist for weeks?
Tests on men who have undergone vasectomies show viable sperm in their ejaculate weeks and dozens of ejaculations after ligation of their vas deferens. How is this possible?
How long does a ...
2
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2answers
248 views
What is the difference between “hamstring tendon” and “common hamstring tendon”?
What is the difference between "hamstring tendon" and "common hamstring tendon"? I have seen both terms being used but I don't know whether they referred to the same tendon.
For example,
Johnson, ...
-4
votes
1answer
48 views
How atom works and it's different from DNA? [closed]
I am studying atoms recently because I am writing a short story and the characters would talk about it for a bit. And I wish it's scientifically accurate.
So I read a lot of articles about the atom ...
6
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0answers
151 views
What's a “constitutionally small penis”?
I'm reading some urology papers and came across one involving penis growth (Kim & Song, 2008); here's an intro passage that I'm confused about:
A total of 58 patients with constitutionally ...
0
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0answers
11 views
What soft tissue separates bones of toes?
I need to know a little about the "knuckles" of toes; specifically the 4 areas that separate the 5 proximal/metatarsal joins.
I'd like to know the terms for areas that might be damaged if the width ...
0
votes
1answer
38 views
Have there been new discoveries concerning the perception of taste for the last 10 years? [closed]
What are the last discoveries concerning the perception of taste for the last 10 years?
We discovered the 5th flavour: umami.
Also the 6th and 7th: oleogustus and starchy.
Anything else?
Maybe in ...
3
votes
2answers
88 views
How is breathing involuntary if the muscles that control it are skeletal?
How is breathing involuntary if the muscles that control it are skeletal? Breathing is involuntary. However, the muscles that control it are skeletal: intercostal muscles and the diaphragm. Are there ...
-1
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1answer
98 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 ...
0
votes
1answer
98 views
Prostate, seminal vesicles or testis which one is bigger(by volume and size)? [closed]
I can't understand this by looking at these photos, especially the last picture makes me more doubtful.
Do you know which of them is the biggest one by volume?
Another question is, what is the ...
4
votes
1answer
105 views
Can the heart generate its own rhythm independent to the SAN?
My textbook and a revision guide, which I believe is a reinterpretation of the textbook, state that:
The SAN initiates waves of excitation that usually override the myogenic action of the cardiac ...
0
votes
1answer
148 views
What are the brain structures directly on top of the brain stem?
I have been trying to learn the anatomy of the brain, and some information on their functions, through an iPad app called 3D Brain. Whilst going through the different parts, I have noticed that one ...
1
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0answers
21 views
What is the name of the wrinkles occurring in people's lips? [closed]
I was wondering if there is a name for the wrinkles occurring in people's lips.
Just curious.
2
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0answers
66 views
How can we usually “trust a fart” not to be liquid or solid?
Jack Nicholson's character Edward Cole in the movie The Bucket List said ...and never trust a fart, and a search for Al Roker leakage White House will clear up any doubts what that's all about.
How ...
1
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0answers
75 views
What are the (statistically) normal pH levels in the most-outer part of human sexual organs?
What are the (statistically) normal pH values of the outer skin/epidermis of human sex organs (groin/crotch) in the male and female? e.g male testes, female vulva, male glans, the enveloping epiderm, ...
0
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0answers
13 views
Autophagy role in mortality and mental health
These days the "fasting industry", personal trainers and self proclaimed doctors on youtube make strong claims such as fasting lengthening life and improve mental health or prevent alzheimer's disease....
1
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2answers
72 views
Would prehistoric humans have been considered negroid or australoid by modern standards? [closed]
What are your thoughts about this?
For myself I think that the subject statement is rather obvious isn’t it, since Africans, & especially Australian Aboriginals, have the most archaic features &...
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1answer
53 views
Is there an adjective I can use to describe body parts like hands, feet, eyes, and ears that exist on both sides of the body's sagittal plane?
Body parts like human hands, feet, ears, eyes, etc. exist on either side of the human body's sagittal plane and can therefore be specified with the adjectives left and right. Is there a special ...
0
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1answer
62 views
How are fingerprints formed?
I know what influences the fingerprints to be unique always. But what actually process is taken to make these as we grow?
0
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0answers
20 views
Colour of our organs
Upon researching the organs of the body I have found that in every picture that I have seen the organs are of colour for example the kidneys are a light red colour. I understnad that our organs are ...
3
votes
2answers
265 views
Does blood clot reduce blood flow?
I read that blood clot reduces blood flow from few website and from doing an A level biology question; and if this blood clot is formed in pulmonary thrombosis, this can reduce gas exchange in lung.
...
1
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0answers
60 views
What is the average human body density?
Looking for values of the average human body density on the Internet, one often finds the values of 0.98 for male, 0.87 for female. Other values are 0.985 for male and female. However, I can find no ...
1
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0answers
150 views
Why doesn't peritoneal dialysate leak through the fallopian tubes?
It is my understanding that the female peritoneum does not form a closed (potential) space due to its puncture by the uterine tubes. If that is indeed the case, why is peritoneal dialysis in women not ...
1
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1answer
56 views
Is the mesenterium a synonym for the mesocolon?
On biodigital anatomy browser I found a structure called the mesocolon. I didn't find the term in Uberon and I'm unclear whether it's simply a synonym for mesenterium or whether it's a separate ...
1
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1answer
91 views
What does 'proper' mean in the anatomical context?
I've seen the word 'proper' in websites, lectures, etc., in the context of human anatomy. But I'm unsure as to what its definition is. For example, the 'oral cavity proper'.
2
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1answer
100 views
In what fluid does the sperm swim in the oviduct?
We know that after sexual intercourse, sperm enters the female body and continues to pass through the oviduct by swimming. "Swimming" implies the presence of fluid.
I want to know what that fluid is ...
2
votes
1answer
106 views
What is meant with “the chest wall and lungs are coupled together”?
Since the lung and chest are elastic, we can represent them with springs. Under normal conditions, they are coupled together: the “lung” springs are stretched and the “chest” springs are compressed. ...
0
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0answers
369 views
Average width of the male body
I've been looking for the average width (at widest point) of the average American male body but couldn't find it anywhere so far.
When I say "widest point", I mean that if you draw a rectangle (that ...
0
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1answer
56 views
Structure separating the left atrium from the ascending aorta?
With reference to the (adult) anatomy of the human heart:
The left atrium (LA) and the proximal part of the ascending aorta (Ao) abut one another, as shown nicely in this image [1]. Is there a name ...
1
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1answer
200 views
Why we can't feel the different parts of ear during hearing which is mentioned in all biology books?
We can't feel our outer ear, middle ear and inner ear during hearing something. Why is that such a complex phenomenon is happening all the time but still we don't have any clue regarding that in our ...
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votes
2answers
61 views
quadrupedalism in human [closed]
Recently I saw a BBC documentary on a family from a remote village in turkey where one couple has 18 children and out of which 5 are walking on four legs. These children are 28-34 yr old & have ...
1
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0answers
27 views
Would preserving your Eyes from Light keep them healhty?
I read about why eyesight diminishes with age.
I am aware of the fact that there are different causes that can affect the quality of image received by our eyes and that being vague would not lead to a ...
1
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0answers
44 views
does being battered build muscle?
My crude understanding of how people normally go about building muscle is something like this following 2 step process:
1) a person can lift weights (for example), which tears muscle and stimulates ...
3
votes
2answers
247 views
Are there any place in human body that safe to implant things and have large amount of blood run through?
Suppose there was a fuel cell in the size of AAA battery that could convert human blood sugar into electricity. Assume it safe and efficient without causing allergic reaction. But to avoid the risk of ...
1
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0answers
26 views
Muscle layers of pharynx and gi tract
Why does pharynx have an internal longitudinal muscle layer and external circular muscle layer, while oesophagus and the rest of gastrointestinal tract have inner circular and outer longitudinal ...
1
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0answers
61 views
Tensile strength of collagen?
Really specific question, but what is the average tensile strength of human collagen, type I? I've tried looking for it online, and either my google-fu skills are weak, or I'm just unlucky. Also, is ...
