Unit II: Integumentary System Flashcards
1
Q
Where is the epidermis derived from?
A
Ectoderm
2
Q
Where is the dermis derived from?
A
Mesenchyme
3
Q
Embryonic CT is made from:
A
- mesoderm
2. neural crest cells
4
Q
The periderm is the ___ layer
A
Keratinized
5
Q
The basal layer produces ___
A
New cells
6
Q
What is vernix caseosa?
A
White substance that covers the fetus
7
Q
Functions of the vernix caseosa
A
- protects the skin from amniotic fluid
2. lubricates fetus
8
Q
Sweat glands develop as ___
A
Down growths
9
Q
Are sweat glands associated with hair follicles?
A
No
10
Q
What is the term for fingerprints?
A
Epidermal ridges
11
Q
What is albanism?
A
- autosomal recessive genetic trait
- lack pigmentation
- normal number to melanocytes
- can’t produce tyrosinase
12
Q
Hair develops as ___
A
Down growths
13
Q
A small bud grows from the wall of the developing hair follicle to form a ___
A
Sebaceous gland
14
Q
What are the first hairs to form?
A
Lanugo
15
Q
Nail fields are surrounded by ___
A
Nail folds
