Exocrine Images

Question 1

Identify

What kind of glands are sweat glands?

Answer 1

Skin of Finger

Sweat glands: simple coiled tubular glands

Bright red keratin layer in epidermis (skin surface)

Difference between nerves and sweat glands: perineurium encircles nerves

Question 2

Identify

Answer 2

Skin of finger

Several cross sectioned and longitudinal sectioned sweat glands and their ducts

Pale cells near periphery, dark cells near lumen

Straitfied cuboidal epithelium lines secretory ducts

Question 3

Identify the cells of sweat glands

Answer 3

Eccrine secretory cells:

• Pale cells: more numerous, larger, clear cytoplasm
• Dark cells: pyramid shaped, darker, near lumen
• Myoepithelial cells by basal lamina

Question 4

Identify

Answer 4

Sebacious glands with hair follicles

Stratified squamous keratinized epithelium up top

Dense irregular CT of dermis beneath

Question 5

Identify

Answer 5

Sebaceous gland with centrally located hair follicle

Notice portions of the acini

Cells are large and colorless - filled with fat droplets

Question 6

Identify

Answer 6

Close up on sebaceous gland acinus

Stem cells on periphery, proliferate and generate acinar cells

Migrate to center as they mature

Increase in size as fat droplets accumulate

Question 7

Identify

Answer 7

Low power view of human pancreas

Question 8

Identify

Answer 8

Medium power of human pancreas

2 islets of Langerhans (endocrine pancreas, contain hormone-producing cells)

Many serous acini - secretory product stained bright pink

Question 9

Identify

Answer 9

High powered view of serous acini (exopcrine pancreas)

Centriacinar cells: beginnning of the intercalated duct. Cells have clear cytoplasm, found in lumen of acinus

Question 10

Identify

Answer 10

High power of exocrine pancreas

Intercalated duct with number serous acini

ID centroacinar cells - central nucleus surrounded by clear cytoplasm

Question 11

Identify

Answer 11

Exocrine pancreas

Drainage pattern: acinus –> intercalated duct (longitudinal section) –> intralobular duct

Question 12

Identify

Answer 12

High power of exocrine pancreas

Cross section of intralobular duct - surrounded by serous acini

Good examples of centroacinar cells in lumen of acini

Islets of Langerhans at bottom

Question 13

Identify

Answer 13

Low power of submandibular gland

Septa (connective tissue) divides gland into lobules