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.
459
questions
2
votes
0answers
15 views
Surface perception
I'm looking for research studying:
How small and compressed together do particles of a surface need to be to be perceived as solid surface to human touch? E.g. sand still feels grainy. Has there been ...
0
votes
0answers
21 views
Are your finger muscles and tendons interconnected?
Are finger muscles and tendons interconnected? If they are interconnected, then if i exercise one finger will it train the other fingers since they are interconnected and share the same muscles in the ...
-1
votes
0answers
27 views
Does any tendon in humans receive a high amount of blood supply? Or is the property of not receiving a large blood supply a constant across tendons?
I read on https://www.physiocomestoyou.co.uk/blog/all-you-need-to-know-about-tendons/ (mirror):
[Tendons] do not have a large blood supply.
Does any tendon in the human body receive a high amount ...
-1
votes
0answers
17 views
Is the morphology of the insertion of the gluteus minimus to the greater trochanter acquired or innate? If acquired, what are the factors?
{1} noted two different morphologies for the insertion of the gluteus minimus to the greater trochanter:
Two morphologies noted: The majority (11/14) were long, thin, and crescent shaped and ran ...
1
vote
0answers
36 views
ATP and Muscle Contraction
I have a question regarding how molecular interactions manifest in physical actions - such as hanging from a bar. To the best of my understanding, when it comes to the contraction of muscles, ATP is ...
1
vote
0answers
43 views
Movement of the Thoracic Cage During Movements of the Thoracic Spine
Just for a bit of context: I am trying to create a 3D digital model of the human skeleton as the first step towards computer generated muscle simulation, and as such I want the skeleton to be as ...
0
votes
0answers
21 views
For how long can the heart be in asystole and then restart itself?
The medication Adenosine is used for the treatment of some abnormal heart rhythms. However, according to Wikipedia, it can cause asystole for a few seconds:
Because of the effects of adenosine on ...
1
vote
1answer
40 views
Passing out from drowning [closed]
How long does it take to pass out from oxygen deprivation? The person is panicked and screaming so they accidentally breathe water into the lungs. So how long would it take for them to pass out? After ...
1
vote
0answers
23 views
For each movement performed by both the gluteus minimus and medius, what percentage of the movement do the gluteus minimus and medius account for?
From what I read on Wikipedia, all functions of the gluteus minimus are mirrored by the gluteus medius. Additionally, the gluteus medius is larger than the gluteus minimus (see comparative images here)...
1
vote
1answer
34 views
Does a full tear of the gluteus minimus tendon result in a long-lasting inflammatory response?
Does a full tear of the gluteus minimus tendon result in a long-lasting inflammatory response?
This answer mentions:
An isolated gluteus minimus tear still causes functional problems because of ...
1
vote
1answer
27 views
Does a full tear of the gluteus minimus tendon has any functional implications?
From what I read on Wikipedia, all functions of the gluteus minimus are mirrored by the gluteus medius. Additionally, the gluteus medius is larger than the gluteus minimus (see comparative images here)...
0
votes
1answer
34 views
How many different states can the femur and lower limb be in?
Often the knee can be thought of as a hinge joint. However, when it flexes, the knee permits the lower leg to rotate. So it is not a pure hinge joint in absolute sense because it permits more range of ...
11
votes
2answers
3k views
Where can I find the list of all tendons in the human body?
https://www.healthcentral.com/article/aging-can-take-major-toll-on-womens-tendons (mirror) claims that:
There are about 4,000 tendons throughout the body.
This claim is echoed by a fair amount of ...
0
votes
0answers
82 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 ...
1
vote
1answer
31 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
votes
0answers
12 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
votes
0answers
11 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
votes
1answer
131 views
Why we can't feel our internal organs? [closed]
We have lungs,kidneys, stomach etc.But why we can not feel them consciously?
1
vote
1answer
26 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
vote
1answer
118 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 ...
0
votes
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
vote
1answer
84 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
votes
0answers
42 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
votes
0answers
13 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
votes
2answers
295 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
52 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 ...
5
votes
1answer
187 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
votes
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
40 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
110 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
votes
1answer
114 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
109 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
112 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
204 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
vote
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
votes
0answers
69 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
vote
0answers
77 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
votes
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
vote
2answers
93 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 &...
-2
votes
1answer
57 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
votes
1answer
78 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
votes
0answers
25 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
299 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
vote
0answers
106 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
vote
0answers
175 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
vote
1answer
61 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
vote
1answer
145 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
votes
1answer
118 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
118 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. ...
1
vote
0answers
452 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 ...
