What is an endocrine gland?
Ductless-secretes into blood
What is an exocrine gland?
A gland with ducts
What are mucous secretions?
Contain mucus
Stain poorly with H&E
What are serous secretions?
Watery, often enzyme rich
Eosinophilic
What is merocrine secretion?
Membrane bound vesicle
Overall membrane gets slightly bigger
e.g salivary gland
What is apocrine secretion?
Free substance approaches membrane
Buds off with a part of the membrane
Membrane transiently smaller
e.g mammary gland
What is holocrine?
Entire cell disintegrates
e.g. sebaceous gland