Anatomy and Physiology Exam 2
Questions With Correct Answers
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
What layer of the epidermis is only found in thick skin? - CORRECT
ANSWER✔✔-Straum lucidum
Questions With Correct Answers
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
What layer of the epidermis is only found in thick skin? - CORRECT
ANSWER✔✔-Straum lucidum
