📘 Chapter 5 – Skin System Study Guide
(Week 5)
I. Skin Glands & Secretions
● Sebaceous glands → produce oil (sebum)
● Sudoriferous/apocrine glands → produce sweat
● Overproduction of sebum → Seborrhea
● Profuse sweating → Diaphoresis
● Inability to sweat → Anhidrosis
II. Lesions
Primary Lesions
● Bulla → large blister
● Wheal → raised itchy bump
Secondary Lesions
● Crust → dried pus/blood
● Fissure → deep crack
● Erosion → shallow loss of skin
● Keloid → raised scar tissue
Vascular Lesions
● Ecchymosis → bluish-purple bruise
● Purpura/Petechiae → bleeding under skin
● Rosacea → vascular disorder causing red blotches
Masses & Growths
● Polyp → mass projecting upward
● Tumor → abnormal growth
(Week 5)
I. Skin Glands & Secretions
● Sebaceous glands → produce oil (sebum)
● Sudoriferous/apocrine glands → produce sweat
● Overproduction of sebum → Seborrhea
● Profuse sweating → Diaphoresis
● Inability to sweat → Anhidrosis
II. Lesions
Primary Lesions
● Bulla → large blister
● Wheal → raised itchy bump
Secondary Lesions
● Crust → dried pus/blood
● Fissure → deep crack
● Erosion → shallow loss of skin
● Keloid → raised scar tissue
Vascular Lesions
● Ecchymosis → bluish-purple bruise
● Purpura/Petechiae → bleeding under skin
● Rosacea → vascular disorder causing red blotches
Masses & Growths
● Polyp → mass projecting upward
● Tumor → abnormal growth
