BIOS251 OL, Week 5 Lab
OL Lab 5: Integumentary system
Learning Objectives:
• Identify the tissue and cellular features of the skin.
• Identify the structures associated with the skin.
• Correlate the anatomical features to its functions.
• Identify the role of the skin in thermoregulation and wound healing.
Part A: Anatomy of the skin
I. Microscopic anatomy of the skin. Complete the table using the image provided:
Structure Function
A Epidermis; stratum Protects deeper layers from
corneum injury and microbial invasion.
B Stratum Granulosum Prevents fluid loss.
C Stratum Spinosum Strength and flexibility of the
skin
D Stratum Basale Generation of cells on the
epidermis.
E Basement Supports structure, separates
Membrane tissues, and protect them.
F Sensory Nerve Detect and transmit
information to the Central
Nervous System (CNS).
G Dermis Support and protect the skin
and the deeper layers. Aide in
sensation and
thermoregulation.
H Langerhans Cell Fighting skin infections by
taking up and processing
microbial antigens.
I Merkel Cell Touch receptors of the skin.
J Keratinocyte Protects the body from injury,
infection, and any other
harmful factors.
K Melanocyte Produces melanin and it’s a
pigment that gives hair and
skin their color. Protects skin
from damage caused by UV
radiation.
This study source was downloaded by 100000897367967 from CourseHero.com on 12-09-2025 06:44:49 GMT -06:00
https://www.coursehero.com/file/252764837/BIOS-251-Week-5-Integumentary-Systemdocx/
, BIOS251 OL, Week 5 Lab
Name: Angel Winstead D41322523
II. Gross anatomy of the skin. Complete the table using the image provided.
Structure Function
A Hair Protective barrier, help
regulate body
temperature, and acting as
a sensory antenna.
B Cutaneous Blood Help regulates body
Vessels temperature and provide
nutrients to the skin.
C Arrector Pili Muscle Creates goosebumps and
helps in thermoregulation.
D Sebaceous Gland Protects the skin from
drying out by producing
sebum.
E Merocrine/Eccrine Regulates body
Sweat Gland temperature.
F Hair Follicle Produce and sustain hair
growth.
G Hypodermis Fat storage. Provides
insulation to regulate body
temperature, cushioning
from impact and anchor
the skin to muscle and
bones. Acts as a protective
layer and energy reserve.
H Pacinian Corpuscle Sensory receptor detecting
deep pressure and high
frequency vibrations
within the skin.
I Epidermal Ridges Fingerprints, enhancing
grip or sense of touch
when touching objects.
J Papillary Region Helps regulate
temperature, supply
nutrients, and waste
removal or remove cellular
waste from the skin.
K Reticular Region Provides strength,
elasticity, and support.
L Dermis Support and protect the
skin and
This study source was downloaded by 100000897367967 from CourseHero.com on 12-09-2025 deeper
06:44:49 GMT layers.
-06:00
Helps in thermoregulation
and in sensation.
https://www.coursehero.com/file/252764837/BIOS-251-Week-5-Integumentary-Systemdocx/
OL Lab 5: Integumentary system
Learning Objectives:
• Identify the tissue and cellular features of the skin.
• Identify the structures associated with the skin.
• Correlate the anatomical features to its functions.
• Identify the role of the skin in thermoregulation and wound healing.
Part A: Anatomy of the skin
I. Microscopic anatomy of the skin. Complete the table using the image provided:
Structure Function
A Epidermis; stratum Protects deeper layers from
corneum injury and microbial invasion.
B Stratum Granulosum Prevents fluid loss.
C Stratum Spinosum Strength and flexibility of the
skin
D Stratum Basale Generation of cells on the
epidermis.
E Basement Supports structure, separates
Membrane tissues, and protect them.
F Sensory Nerve Detect and transmit
information to the Central
Nervous System (CNS).
G Dermis Support and protect the skin
and the deeper layers. Aide in
sensation and
thermoregulation.
H Langerhans Cell Fighting skin infections by
taking up and processing
microbial antigens.
I Merkel Cell Touch receptors of the skin.
J Keratinocyte Protects the body from injury,
infection, and any other
harmful factors.
K Melanocyte Produces melanin and it’s a
pigment that gives hair and
skin their color. Protects skin
from damage caused by UV
radiation.
This study source was downloaded by 100000897367967 from CourseHero.com on 12-09-2025 06:44:49 GMT -06:00
https://www.coursehero.com/file/252764837/BIOS-251-Week-5-Integumentary-Systemdocx/
, BIOS251 OL, Week 5 Lab
Name: Angel Winstead D41322523
II. Gross anatomy of the skin. Complete the table using the image provided.
Structure Function
A Hair Protective barrier, help
regulate body
temperature, and acting as
a sensory antenna.
B Cutaneous Blood Help regulates body
Vessels temperature and provide
nutrients to the skin.
C Arrector Pili Muscle Creates goosebumps and
helps in thermoregulation.
D Sebaceous Gland Protects the skin from
drying out by producing
sebum.
E Merocrine/Eccrine Regulates body
Sweat Gland temperature.
F Hair Follicle Produce and sustain hair
growth.
G Hypodermis Fat storage. Provides
insulation to regulate body
temperature, cushioning
from impact and anchor
the skin to muscle and
bones. Acts as a protective
layer and energy reserve.
H Pacinian Corpuscle Sensory receptor detecting
deep pressure and high
frequency vibrations
within the skin.
I Epidermal Ridges Fingerprints, enhancing
grip or sense of touch
when touching objects.
J Papillary Region Helps regulate
temperature, supply
nutrients, and waste
removal or remove cellular
waste from the skin.
K Reticular Region Provides strength,
elasticity, and support.
L Dermis Support and protect the
skin and
This study source was downloaded by 100000897367967 from CourseHero.com on 12-09-2025 deeper
06:44:49 GMT layers.
-06:00
Helps in thermoregulation
and in sensation.
https://www.coursehero.com/file/252764837/BIOS-251-Week-5-Integumentary-Systemdocx/
