BIOS252 EXAM 2 ANATOMY & PHYSIOLOGY II
EXAM 2025 GUIDE GRADED A+ |
CHAMBERLAIN
Functions of the Integumentary System - correct
answer--Resistance to trauma and infection
-Prevents loss or gain of water
-Vitamin D synthesis
-Sensory receptors for heat, cold, touch, texture,
pressure, vibration, and tissue injury
-Thermoregulation
How does skin resist trauma and infection? -
correct answer--Skin has low pH to reduce
bacteria and fungi
-Cells are packed closely together with tough
protein called keratin
,Name 3 ways the integumentary system
thermoregulates? - correct answer--Glands
release sweat for evaporative cooling
- Vasoconstriction
- Vasodilation
Define: Vasoconstriction - correct answer-
narrowing of blood vessels, reduces heat loss
Define: Vasodilation - correct answer-widening of
blood vessels, increases heat loss
What are the 2 main parts of the integumentary
system? - correct answer-Epidermis- outer layer
Dermis- underlying connective tissue
*Hypodermis not really part of the skin!*
What does the epidermis primarily consist of? -
correct answer-keratinized stratified squamous
epithelium
What are the epidermal derivatives? - correct
answer-glands, hair, nails
What are the 4 main cell types in the epidermis? -
correct answer-- Karatinocytes
, - Melanocytes
- Tactile (Merkel) cells
- Dendritic (Langerhans) cells
Keratinocytes (functions) - correct answer-most
numerous cell type, make fibrous protein keratin
Melanocytes (functions) - correct answer-
synthesize pigment called melanin
Tactile cells (functions and 2nd name) - correct
answer-also called Merkel cells, receptors for the
sense of touch, associated with a dermal nerve
fiber
Dendritic cells (functions and 2nd name) - correct
answer-macrophages (big phagocytic cells) that
kill microbes
What are the layers of the epidermis (list from
bottom up)? - correct answer-- Stratum basale
- Stratum spinosum
- Stratum granulosum
- Stratum lucidum
- Stratum corneum
EXAM 2025 GUIDE GRADED A+ |
CHAMBERLAIN
Functions of the Integumentary System - correct
answer--Resistance to trauma and infection
-Prevents loss or gain of water
-Vitamin D synthesis
-Sensory receptors for heat, cold, touch, texture,
pressure, vibration, and tissue injury
-Thermoregulation
How does skin resist trauma and infection? -
correct answer--Skin has low pH to reduce
bacteria and fungi
-Cells are packed closely together with tough
protein called keratin
,Name 3 ways the integumentary system
thermoregulates? - correct answer--Glands
release sweat for evaporative cooling
- Vasoconstriction
- Vasodilation
Define: Vasoconstriction - correct answer-
narrowing of blood vessels, reduces heat loss
Define: Vasodilation - correct answer-widening of
blood vessels, increases heat loss
What are the 2 main parts of the integumentary
system? - correct answer-Epidermis- outer layer
Dermis- underlying connective tissue
*Hypodermis not really part of the skin!*
What does the epidermis primarily consist of? -
correct answer-keratinized stratified squamous
epithelium
What are the epidermal derivatives? - correct
answer-glands, hair, nails
What are the 4 main cell types in the epidermis? -
correct answer-- Karatinocytes
, - Melanocytes
- Tactile (Merkel) cells
- Dendritic (Langerhans) cells
Keratinocytes (functions) - correct answer-most
numerous cell type, make fibrous protein keratin
Melanocytes (functions) - correct answer-
synthesize pigment called melanin
Tactile cells (functions and 2nd name) - correct
answer-also called Merkel cells, receptors for the
sense of touch, associated with a dermal nerve
fiber
Dendritic cells (functions and 2nd name) - correct
answer-macrophages (big phagocytic cells) that
kill microbes
What are the layers of the epidermis (list from
bottom up)? - correct answer-- Stratum basale
- Stratum spinosum
- Stratum granulosum
- Stratum lucidum
- Stratum corneum
