Medical Mystery II
-
Never mind, not important... I also cannot remember liauzOriginally posted by heavenscloud:The dead body cannot convert the lactic acid back into something i cant remember. Hence it leads to a fusion of something and something into a certain gel responsible for the stiffness.
something to do with the heavy chain attached to the light chain and not being able to detach because there is lack of ADP or ATP... anywayz, good participation 
-
Found his book. Prof Chao Tzee Cheng.
-
Gnite yall!
See u ard more often next weekend... shucks! -
Don't have to read that high ler... you go read the basic Human Anatomy and Physiology by EN Marieb used widely by many medical students throughout Malaysia, Singapore, Indonesia, Canada, UK, Aus, NZ and US got say one...Originally posted by ndmmxiaomayi:Found his book. Prof Chao Tzee Cheng.
Or any basic physiology book lar... -
Morning erections are technically nighttime erections which happen during Rapid Eye Movement (REM) sleep (when most dreaming occurs), although men older than sixty years may have them during even non-REM sleep. Generally, we experience four intervals of REM sleep per night. These spontaneous woodies in the wee hours are caused by specific neuroreflexes that are stimulated during REM sleep.Originally posted by oxford mushroom:Ok...my two contributions of a 'sexual' nature:
1. Why do men wake up with morning erections and how is that useful in the investigation of impotence?
2. If you find evidence of recent ejaculation on a dead body (quite common), does it mean the man had indulged in sexual activity prior to death?
Most guys have nocturnal erections throughout their lifetime, and their frequency, along with one's awareness of them, may vary. Nighttime/morning erections can be noticeably harder or stiffer than those had when awake. The penis can stay erect for up to two hours nightly, and not all men who have erections during the night wake up with one in the morning.
taken from a site.. -
No no no, it's a book written by him about the autopsies he have done. Then he mention about Rigor mortis and explained a little about it. But don't understand, until I have studied bio.Originally posted by renorenal:Don't have to read that high ler... you go read the basic Human Anatomy and Physiology by EN Marieb used widely by many medical students throughout Malaysia, Singapore, Indonesia, Canada, UK, Aus, NZ and US got say one...
Or any basic physiology book lar... -
Yup, you got the first part and I know the site you got it from. The second part of the answer is not on the site...how can it be useful in the investigation of impotence?Originally posted by heavenscloud:Morning erections are technically nighttime erections which happen during Rapid Eye Movement (REM) sleep (when most dreaming occurs), although men older than sixty years may have them during even non-REM sleep. Generally, we experience four intervals of REM sleep per night. These spontaneous woodies in the wee hours are caused by specific neuroreflexes that are stimulated during REM sleep.
Most guys have nocturnal erections throughout their lifetime, and their frequency, along with one's awareness of them, may vary. Nighttime/morning erections can be noticeably harder or stiffer than those had when awake. The penis can stay erect for up to two hours nightly, and not all men who have erections during the night wake up with one in the morning.
taken from a site.. -
Come back tomorrow. Off to sleep. Good night.
-
Contraction of muscle fibres occurs when actin anf myosin filaments slide over each other. Relaxation of muscle tone requires ATP (energy) to allow these filaments to return to their native state. With the depletion of ATP following death, this return to normal muscle tone does not occur and rigor mortis sets in.Originally posted by renorenal:Never mind, not important... I also cannot remember liauz something to do with the heavy chain attached to the light chain and not being able to detach because there is lack of ADP or ATP... anywayz, good participation
If someone was involved in vigorous activity prior to death and so used up alot of ATP, rigor mortis sets in earlier, for above reason. -
btw, hor tis dosent really tell me anything
WARNING: ANSWERS & SPOILERS BELOW
Iris Pigmentation.
The iris is filled with fibers arranged in a certain manner to reflect light shone upon it. The more pigmented the iris is, the darker your iris color will be (hence depicting that the Asians have more pigmented cells). The lesser pigment there are or sometimes none (the Caucasoids), the more bluish it will appear. If there is a mix, you often find it brown or hazel... -
It just tells that blue iris has lack of melanocytes while black iris has plenty of melanocytes. If present in an amount which is not too much or not too less, it will appear greenish to brown color.Originally posted by alexkusu:btw, hor tis dosent really tell me anything
WARNING: ANSWERS & SPOILERS BELOW
Iris Pigmentation.
The iris is filled with fibers arranged in a certain manner to reflect light shone upon it. The more pigmented the iris is, the darker your iris color will be (hence depicting that the Asians have more pigmented cells). The lesser pigment there are or sometimes none (the Caucasoids), the more bluish it will appear. If there is a mix, you often find it brown or hazel... -
Can't find this book. Library also don't have. Where you get this book?Originally posted by renorenal:Don't have to read that high ler... you go read the basic Human Anatomy and Physiology by EN Marieb used widely by many medical students throughout Malaysia, Singapore, Indonesia, Canada, UK, Aus, NZ and US got say one...
Or any basic physiology book lar... -
mmm...just now you mentioned about myopia..so it made me remember a qn i had some time back....how does reading a book or staring at the tv screen for too long make your eyeball longer? and how do your corneas get "dented" such that one has astagmatism? i dunno the answers...hoping someone could answer them for me
-
Reading a book is a near vision action --> meaning the book is less than 7m from you. Your eye muscles (specifically the circular muscles) will contract. This slackens the pull on the suspensory ligaments and the lens. The elastic nature of the lens causes it to become thicker and more convex. If you don't relax your eyes, it will cause myopia.Originally posted by angelfairy:mmm...just now you mentioned about myopia..so it made me remember a qn i had some time back....how does reading a book or staring at the tv screen for too long make your eyeball longer? and how do your corneas get "dented" such that one has astagmatism? i dunno the answers...hoping someone could answer them for me
PS: Me not expert. Just my knowledge of bio from secondary school. May not help. -
1st EditionOriginally posted by ndmmxiaomayi:Can't find this book. Library also don't have. Where you get this book?
2nd Edition
3rd Edition
4th Edition
5th Edition
6th Edition
-
erm..so basically an asian gene cant have this characteristics rite?Originally posted by renorenal:It just tells that blue iris has lack of melanocytes while black iris has plenty of melanocytes. If present in an amount which is not too much or not too less, it will appear greenish to brown color. -
Depends on the genes that are inherited, hence reflecting on the earlier generation of the family.Originally posted by alexkusu:erm..so basically an asian gene cant have this characteristics rite? -
Originally posted by renorenal:Depends on the genes that are inherited, hence reflecting on the earlier generation of the family.
all chinese genes eh.. frm Fujian/Fukien province in China.
Maybe shud plot family tree. Nvm la, ignorance is bliss -
Yours not that bluish what, hazel brown black is the other end of the spectrum... still Asian...Originally posted by alexkusu: all chinese genes eh.. frm Fujian/Fukien province in China.
Maybe shud plot family tree. Nvm la, ignorance is bliss -
NEW MYSTERY
Can humans do without salivation? Give a reasonable explanation.
MYSTERY SOLVED -
NEW MYSTERY
I am red
I am round
I look like the figure of 8
Without me, you'll be dead
What am I?
MYSTERY SOLVED -
NEW MYSTERY
I am stable
I am flexible
I am the best of my 4 other friends
Without me, you won't have dexterity
What am I?
MYSTERY SOLVED -
NEW MYSTERY
I am straight, sometimes not,
I am black, may be white,
I am swift and follow the wind,
I am the decorator of the human body...
What am I?
MYSTERY SOLVED -
NEW MYSTERY
I am long,
I am muscular,
I am swift like a snake,
Without me, you'd lose weight...
What am I?
MYSTERY SOLVED -
i got the book.Originally posted by ndmmxiaomayi:Can't find this book. Library also don't have. Where you get this book?
i dunno where you can find but nus medical library confirm got