Glands And Secretion

Question 1

What is the difference between endocrine and exocrine?

Answer 1

• Endocrine - ductless secretion; secretes directly into bloodstream
• Exocrine - secretion into a duct which travels to the site of need

Question 2

Give an example of a unicellular gland

Answer 2

GOBLET CELL

Question 3

List the types of simple multicellular glands that can be found in the body

Answer 3

• Branched acinar
• Branched tubular
• Unbranched tubular
• Coiled tubular

Question 4

What type of structure is present in the intestinal glands?

Answer 4

Simple tubular

Question 5

What is the structure of merocrine sweat glands?

Answer 5

Simple coiled tubular

Question 6

What is the structure of of the sebaceous glands?

Answer 6

Simple branched acinar

Question 7

What is the structure of the mammary glands?

Answer 7

Compound acinar

Question 8

Where I’m the body might you find compound tubular glands?

Answer 8

• Mucous glands of the mouth

- Bulbourethral glands in male reproductive system

Question 9

Where in the body might you find compound tubuloacinar glands?

Answer 9

• Salivary glands
• Pancreas
• Glands of respiratory passages

Question 10

Where in the body might you find simple branched tubular glands?

Answer 10

• Gastric glands

- Mucous glands

Question 11

Describe the method of merocrine secretion

Answer 11

• EXOCYTOSIS
• Secretory vesicle fuses with the plasma membrane
• Contents of vesicle are in continuity with the extracellular matrix
• Membrane is transiently larger
• Membrane is retrieved to restore cell surface area

Question 12

What is apocrine secretion and where might this occur?

Answer 12

• Secretion of non membrane bound structure e.g. Lipid
• Molecule makes contact with plasma membrane and pushes out apical membrane
• Thin layer of apical cytoplasm and plasma membrane leaves and surrounds droplet
• Membrane is transiently smaller
• Occurs in MAMMARY GLANDS

Question 13

What is the role of MYOEPITHELIAL cells?

Answer 13

Contract to stimulate secretion of milk in mammary glands

Question 14

Describe how holocrine secretion occurs and where this may take place

Answer 14

• SEBACEOUS GLANDS
• Disintegration of the entire cell
• Release of cell contents
• Discharge of the whole cell

Question 15

What is meant by transepithelial transport?

Answer 15

• Endocytosis of substance at one end of the cell
• Transport vesicle shuttles across cytoplasm
• Exocytosis of substance at opposite surface

Question 16

Name 3 ways in which glands can be classified

Answer 16

• DESTINATION of secretion (exocrine or endocrine)
• METHOD of secretion (merocrine, apocrine or holocrine)
• STRUCTURE of gland (acinar or tubular, simple or compound, branched or unbranched)