Two candy Q

[asadxyz]

Which muscle is of ectodermal origin ?

Bcause careful of the danger " a big catch"

This is a two candy Question

[desiboston]

Ectodermal derivatives (skin, glands, conjunctiva) so is it erector pylori in the skin?

[asadxyz]

Dear
Again t he muscles are of neural crest cell origin

Pupillary and ciliary muscles of the eye.


Ref:-Fundamental neuroscience by Duane E. Haines , 2nd Edition. Page 79t.

However I do invite comments on this statement

[desiboston]

Then whats the origin of erector pylori?

[asadxyz]

As far as skin is concerned
1:- Dermis = Mesodermal origin
2:- Epidermis and its derivatives = ectodermal origin

With epidermal derivatives
Hair
Nail
Glands
Mammary
Sweat gland
Sebaceous glands
Dermal structures in which erector pili is included are derived from mesoderm.
With limited dresources I could not find its exact origin .Because it is not mentioned in the ectodermal orighin group , so it logically inferred that it is of mesodermal origin because

All muscles are of mesodermal origin except which I mentioned above about which I quoted the ref.Remember that was the only ref which I could find about it . No other source supported.
Erector pili is found in the dermis and its source is not mentioned anywhere as that of ectodermal origin , so I find no other way except to assume that is or mesodermal origin.


If yu or some other friend has some def source then please let us know .