ANAT2241 Integumentary System: Difference between revisions
No edit summary |
m (→Sensory) |
||
(25 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
{{ANAT2241 header}} | {{ANAT2241 header}} | ||
== | ==General Objective== | ||
To know the structure and function of skin and its appendages (derivatives). | |||
===Specific Objectives=== | |||
# To know the microscopic structure of the epidermis and dermis. | |||
# To know the histological differences between hairy (thin) and glabrous (thick) skin. | |||
# To know the formation and histology of skin appendages: eccrine and apocrine sweat glands, sebaceous glands, hairs, nails and specialised glands as listed below. | |||
# To know the histological features of Pacinian and Meissner corpuscles and free nerve endings. | |||
===Learning activities=== | |||
Examine the following virtual slides, and in course manual identify draw and label the following structures and note their function. | |||
Virtual Slides: [https://moodle.telt.unsw.edu.au/mod/book/view.php?id=789982&chapterid=100769 Integumentary System (skin)] | |||
==Histology== | ==Histology== | ||
{| | |||
| [[File:Adult skin histology 02.jpg|400px]] | |||
Skin overview {{HE}} | |||
| [[File:Adult skin histology 03.jpg|400px]] | |||
Skin overview (trichrome stain) | |||
|- | |||
| [[File:Adult epidermis histology 01.jpg|400px]] | |||
Epidermis (thin skin) {{HE}} | |||
| [[File:Adult epidermis histology 02.jpg|400px]] | |||
Epidermis (thick skin) | |||
|- | |||
| [[File:Adult skin histology 01.jpg|400px]] | |||
Epidermis and Dermis {{HE}} | |||
| [[File:Adult skin histology 04.jpg|400px]] | |||
Dermis elastic fibres ({{van Gieson}} and [[Histology_Stains#Silver_Stain|Silver Stain]]) | |||
|} | |||
<gallery> | |||
File:Adult_epidermis_histology_01.jpg | |||
File:Adult_epidermis_histology_02.jpg | |||
File:Adult_epidermis_histology_03.jpg | |||
File:Adult skin histology 01.jpg | |||
File:Adult skin histology 02.jpg | |||
File:Adult skin histology 03.jpg | |||
File:Adult skin histology 04.jpg | |||
</gallery> | |||
==Pigmentation== | |||
[[File:Adult epidermis histology 03.jpg]] | |||
Melanin in Basal Cell Layer | |||
==Glands and Hair== | |||
{| | |||
| width=200px|[[File:Merocrine secretion animation.gif|200px]] | |||
| width=200px|[[File:Apocrine secretion animation.gif|200px]] | |||
| width=200px|[[File:Holocrine secretion animation.gif|200px]] | |||
|- | |||
| Merocrine secretion (sweat gland) | |||
| Apocrine secretion (axilla) | |||
| Holocrine secretion (hair follicle) | |||
|} | |||
<gallery> | |||
File:Integumentary- sebaceous gland histology 01.jpg|Sebaceous gland histology | |||
File:Integumentary- sebaceous gland histology 02.jpg|Sebaceous gland histology | |||
File:Integumentary-_hair_follicle_03.jpg|Hair follicles | |||
File:Integumentary-_hair_follicle_01.jpg|Hair follicle | |||
File:Integumentary-_hair_follicle_02.jpg|Hair follicle | |||
File:Hair_histology.jpg|Hair histology | |||
</gallery> | |||
==Sensory== | |||
{| width=600px | |||
|- | |||
! Touch | |||
! Pressure | |||
|- | |||
| [[File:Meissner corpuscle 01.jpg|300px]] | |||
| [[File:Pacinian_corpuscle_histology_01.jpg|300px]] | |||
|- | |||
| '''Meissner corpuscle''' a sensory touch cellular structure located in the dermis superficial region. | |||
| '''Pacinian corpuscle''' a sensory pressure cellular structure located in the dermis deep region. | |||
|} | |||
{| | |||
|+ '''Meissner Corpuscle''' | |||
|- | |||
| | |||
* coiled, spring-like structures composed of stacked, disk-like lamellar cells. | |||
* lamellae orientation is usually parallel to the skin surface. | |||
* lamellar cells - Schwann cell-derived with peripherally displaced nuclei in a fibroblastic capsule incomplete at the apex. | |||
* sensory neurites - course through the lamellae, not visible by {{HE}}. | |||
| [[File:Meissner corpuscle 01.jpg|400px]] | |||
|} | |||
:'''Links:''' {{touch}} | |||
==Lip== | |||
{| | |||
| [[File:Integumentary - lip01.jpg|400px]] | |||
vermilion border | |||
| | |||
* '''anatomical lips''' - comprise the entire fleshy fold surrounding the oral orifice. | |||
* '''vermilion''' - red part of the lips. | |||
* '''vermilion border''' (prolabium) - only a small part, area of transition from skin to oral mucosa. | |||
* outside - covered by thin skin, stratified squamous keratinised epithelium | |||
** skin side - hairs, swear and sebaceous glands. | |||
* inside - lined by oral mucosa, stratified squamous non-keratinised epithelium | |||
** mucosa side - labial salivary glands (mucoserous). | |||
* orbicularis oris muscle - skeletal (striated) muscle that shapes the lips. | |||
|} | |||
==Nail== | |||
{| | |||
| [[File:Fingernail cartoon.jpg]] | |||
| | |||
* convex on its outer surface, concave within | |||
* in a groove in the skin, implanted by a portion called the '''root''' | |||
* exposed portion is called the '''body''' | |||
* distal extremity the '''free edge''' | |||
|} | |||
<br> | |||
{{Integument Histology}} | |||
{{ANAT2241 footer}} | {{ANAT2241 footer}} |
Latest revision as of 13:29, 9 August 2018
ANAT2241 This practical support page content is not part of the virtual science practical class and provides additional information for student self-directed learning purposes. All practical class pages are located on Moodle - ANAT2241 |
General Objective
To know the structure and function of skin and its appendages (derivatives).
Specific Objectives
- To know the microscopic structure of the epidermis and dermis.
- To know the histological differences between hairy (thin) and glabrous (thick) skin.
- To know the formation and histology of skin appendages: eccrine and apocrine sweat glands, sebaceous glands, hairs, nails and specialised glands as listed below.
- To know the histological features of Pacinian and Meissner corpuscles and free nerve endings.
Learning activities
Examine the following virtual slides, and in course manual identify draw and label the following structures and note their function.
Virtual Slides: Integumentary System (skin)
Histology
Skin overview (Stain - Haematoxylin Eosin) |
Skin overview (trichrome stain) |
Epidermis (thin skin) (Stain - Haematoxylin Eosin) |
Epidermis (thick skin) |
Epidermis and Dermis (Stain - Haematoxylin Eosin) |
Dermis elastic fibres ((Stain - van Gieson) and Silver Stain) |
Pigmentation
Melanin in Basal Cell Layer
Glands and Hair
Merocrine secretion (sweat gland) | Apocrine secretion (axilla) | Holocrine secretion (hair follicle) |
Sensory
|
- Links: touch
Lip
Nail
|
- Integument Histology Links: Adult Skin | Epidermis and Dermis | Thin Skin Epidermis | Thick Skin Epidermis | Elastic Fibres | Basal Cell Melanin | Foundations Practical Support | Integumentary System Development | Histology Stains
Course Links
- Histology Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ANAT2241 Support | Histology | Histology Stains | Embryology Glossary
Common Histology Stains | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Practical Support
- Pages can be accessed from any internet connected computer.
ANAT2241 Support Links: The Virtual Microscope | Covering and Lining Epithelia | Glandular Epithelia | CT Components | CT Types | Bone, Bone Formation and Joints | Muscle | Nervous | Blood | Eye | Cardiovascular | Respiratory | Integumentary | Gastrointestinal | Gastrointestinal Organs | Lymphatic and Immune | Endocrine | Urinary | Female Reproductive | Male Reproductive | Histology Stains | Histology Drawings | Practicals Health and Safety 2013 | Moodle - 2019
ANAT2241 This practical support page content is not part of the science practical class and provides only background information for student self-directed learning purposes.
Cite this page: Hill, M.A. (2024, March 29) Embryology ANAT2241 Integumentary System. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/ANAT2241_Integumentary_System
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G