BIOS 251 Week 5 Lab-Integumentary System 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...
OL Lab 4: 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 Stratum corneum Protection from friction and
abrasion. Protect from injury
and microbial invasion.
B Stratum granulosum Water impermeable layer,
generate large amount of
keratin protein.
C Stratum spinosum It is a strong binding layer,
which binds things together. It
is responsible for skin’s
flexibility and strength.
D Stratum Basale Attaches epidermis to dermis.
It is responsible for generation
of all cells of the epidermis.
Produce new keratinocytes
E Tactile disc Sense light touch and pressure.
F Sensory neuron Transmits impulses from a
receptor , to a more central
location in the nervous system.
G Dermis Supports and protects the skin
and its deeper layers, also
assists in thermoregulation.
H Intradermal Participates in the immune
macrophage responses mounted against
microbes that invade the skin.
I Tactile epithelial cell Mechanoreceptors essential
for light touch sensation.
J Keratinocyte To minimize heat, solute and
water loss. Preserve against
microbial, viral, fungal and
parasitic invasion.
K Melanocyte To produce melanin.
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II. Gross anatomy of the skin. Complete the table using the image provided.
--00
Structure Function
A Hair shaf To trap a layer of air to add
insulation.
B Artery Carry oxygenated blood.
C Sensory nerve converts external stimuli
from the organism's
environment into internal
electrical impulses.
D Sebaceous(oil) gland to produce and secrete
sebum, which helps skin to
protect against friction and
makes it more impervious
to moisture.
E Apocrine sweat Active during emotional
gland sweating and sweat during
sexual activities.
F Hair root Absorption of water and
minerals.
G Adipose tissue Provides insulation and
protection for organs and
storages energy.
H Lamellated(Pacinian) It is a pressure receptor
corpuscle which can detect deep
pressure.
I Dermal papillae Supply nutrients to the
epidermal cells.
J Papillary region Provides the epidermis
with nutrients like
keratinocytes to produce
skin cells.
K Reticular region To strengthen the skin and
also provides our skin with
This study source was downloaded by 100000829216747 from CourseHero.com on 02-23-2022 06:12:29 GMT -06:00
elasticity.
L Dermis Assist in thermoregulation,
https://www.coursehero.com/file/70935842/Week-4-Integumentary-system-labdocx/ and aid in sensation.
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