FINAL LABS_BIOS251_Online Labs_Week 5-Integumentary system lab
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251
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Mechanical Engineering
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Dec 6, 2023
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BIOS251 OL, Week 5 Lab
Name:
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
Stratum Corneum
Protect from injury
B
Stratum Granulosum
Make a large amount of keratin
protein
C
Stratum Spinosum
Skin flexibility
D
Stratum Basale
Making all the cells in the
epidermis
E
Basement
membrane
Protect tissue
F
Sensory Neuron
Transmits impulse to the
central nervous system
G
Dermis
Protect the skin
H
Intraepidermal
macrophages
Help in the aid of the immune
responses against viruses that
invade the skin.
I
Tactile epithelium
cell
It for light touch sensation
J
Keratinocyte
Minimize heat
BIOS251 OL, Week 5 Lab
Name:
II. Gross anatomy of the skin. Complete the table using the image provided.
K
Melanocyte
Protect melanin
BIOS251 OL, Week 5 Lab
Name:
Part B: Thermoregulation
Use the diagram provided, to answer the questions.
Structure
Function
A
Hair Shaft
Trap layer of air to add
insulation
B
Blood Vessels
Carry Oxygenated blood
C
Arrector pili muscle
Make external stimulus
from organism’s
environment to electrical
impulse
D
Sebaceous gland
Produce and secrete
sebum
E
Eccrine Sweat
Gland
Regulate body
temperature
F
Hair Root
Absorb water and minerals
G
Adipose tissue
Provides insulation
H
Lamellated
corpuscle
Can detect deep pressure
I
Epidermal Ridges
Give nutrient to the
epidermal cell
J
Papillary region
Give nutrient to the
epidermis to help produce
skin cells
K
Reticular region
Produce the skin with
elasticity
L
Dermis
Help with
thermoregulation
BIOS251 OL, Week 5 Lab
Name:
1.
Homeostatic regulatory mechanism involves atleast 3 independent components.Identify these
components labeled as A, B, C in the diagram.
A.
Sweat glands
B.Hypothalamus
C.Blood Vessels
2. Describe in your own words the physiological events that would occur during this feedback
mechanism
.
When the internal temputure changes our nodes sensor which is located in the nervous system sends
information to the hypothalamus and the hypothalamus then sends the signals to different part of our
body.
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