GNK125: Glandular epithelium

Exocrine glands

Glandular epithelium

Unicellular glands

Ileum Slide 41 (H & E)

The following two figures illustrate the structure of a unicellular gland.

A high magnification of the ileum demonstrating the structure of a goblet cell as an example of a unicellular gland.

Fig Fig 41-006
Fig 41-006
Wheater 3d Ed p.88 of 4th Ed p.92

A very high magnification of a goblet cell demonstrating the cell structure.

Fig Fig 41-007
Fig 41-007
Wheater 3d Ed p.88 or 4th Ed p.92

Simple multicellular glands

The following four figures demonstrate the different simple multicellular glands found in the body.

Colon Slide 42 (H & E)

The following two figures illustrate the structure of a simple straight tubular gland.

A very low magnification of the colon demonstrating simple straight tubular glands.

Fig Fig 42-002
Fig 42-002
Wheater 3d Ed p.90 or 4th Ed p.94

A low magnification of the colon demonstrating the structure of a simple straight tubular gland.

Fig Fig 42-003
Fig 42-003
Wheater 3d Ed p.90 or 4th Ed p.94

Skin Slide 93 (H & E)

Clinical case

A 26-year old very obese male patient consults his family doctor complaining about excessive sweating which he finds embarrassing.
His doctor explains to him that he has the condition called hyperhidrosis, which is caused by his overweight and is the excessive production of sweat. His sweating is an attempt by his body to lose heat.

What are the different structures of an merocrine sweat gland?
How do these structures differ histologically and functionally?
Where do merocrine sweat glands open in the body?
What other types of sweat glands are found in the body and where are these glands located?

The following figure illustrates the structure of a simple coiled tubular gland.

A high magnification of the skin demonstrating the structure of a simple coiled tubular gland.

Fig Fig 93-001
Fig 93-001
Wheater 3d Ed p.90 or 4th Ed p.94

Scalp Slide 95 (H & E)

Clinical Case

An 18-year old woman visits a dermatologist because of the presence of infected spots on her chin, chest, and back. She says she has experienced spots and blackheads in the same regions since she was 13 years old. She has been told by her family doctor that she is suffering from acne vulgaris and will grow out of it. She is now very concerned by the fact that as each lesion resolves, she is left with a scar. Her dermatologist tells her that increased secretion of sebum and blockage of the duct of the sebaceous gland cause her acne. The inflammatory reaction can be treated satisfactorily by systemic antibiotic administration and topical steroids.

Name all the locations where sebaceous glands are found in the body.
Where do the ducts of sebaceous glands generally open?
In which way do the cells secrete the sebum?

The following figure illustrates the structure of a simple alveolar gland.

A low magnification of the skin demonstrating the structure of a sebaceous gland as an example of a simple alveolar type gland.

Fig Fig 95-001
Fig 95-001
Wheater 3d Ed p.91 of 4th Ed p.95

Compound multicellular glands

The following figure demonstrates the structure of a compound multicellular gland.

Pancreas Slide 50 (H & E)

A high magnification of the exocrine pancreas demonstrating the structure of a compound tubulo-alveolar gland.

Fig Fig 50-007
Fig 50-007
Wheater 3rd Ed p.91 or 4th Ed p. 95

Memorandum

Kliniese Geval Fig 41-006 Fig 41-007 Fig 42-002

Fig 42-003 Fig 93-001 Fig 95-001 Fig 50-007

Memorandum
Kliniese Geval	Fig 41-006	Fig 41-007	Fig 42-002
Fig 42-003	Fig 93-001	Fig 95-001	Fig 50-007