Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
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
,Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
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
,Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
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
, Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
How many layers are found in the stratum basale? - - -
correct answer ✅1 layer
What cells are found in the stratum basale? - - -
correct answer ✅stem cells, keratinocytes, melanocytes, tactile
(merkel) cells
What is the importance of the stem cells in the stratum basale? - - -
correct answer ✅makes it mitotically active, the stem cells divide
and give rise to keratinocytes
How many layers are in the stratum spinosum? - - -
correct answer ✅8-10 layers
What is the appearance of the cells in the stratum spinosum, and
why? - - -
correct answer ✅The cells are flattened, which happens as they
are pushed upward
What is contained in the stratum spinosum? - - -
correct answer ✅Keratinocytes, dendridic (langerhans) cells
Questions And Answers Latest Update
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
,Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
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
,Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
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
, Anatomy and Physiology: Exam 2
Questions And Answers Latest Update
How many layers are found in the stratum basale? - - -
correct answer ✅1 layer
What cells are found in the stratum basale? - - -
correct answer ✅stem cells, keratinocytes, melanocytes, tactile
(merkel) cells
What is the importance of the stem cells in the stratum basale? - - -
correct answer ✅makes it mitotically active, the stem cells divide
and give rise to keratinocytes
How many layers are in the stratum spinosum? - - -
correct answer ✅8-10 layers
What is the appearance of the cells in the stratum spinosum, and
why? - - -
correct answer ✅The cells are flattened, which happens as they
are pushed upward
What is contained in the stratum spinosum? - - -
correct answer ✅Keratinocytes, dendridic (langerhans) cells
