Week 2 Atlas Application Integumentary System
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Date: 02/02/2024
Integumentary System Lab
Last updated: 6/15/2023
Activity 1: Skin Overview
Part 1: Skin Overview
●
Open Visible Body Suite.
●
Search for and select the Animation
"Function of the Skin.
"
●
Watch the animation and answer the following questions. 1.
List the functions of the integumentary system. The skin, nails, and hair of the integumentary system provide a barrier between the environment and tissues and organs within the body. The skin is the largest organ in the body and it absorbs nutrients, regulates internal body temperature, and eliminates waste.
2.
Homeostasis is the process by which a healthy internal bodily state is maintained through physiological regulation. In 1–2 sentences, explain how the skin is involved in homeostasis.
The skin is involved in homeostasis when sweat glands reduce body temperature by releasing sweat.
3.
All skin tissue is composed of three main layers. Name the three layers of skin from superficial to deep. Epidermis, dermis, hypodermis
Part 2: Touch
●
Open the Integumentary System View
"Touch Receptors.
"
Explore the touch receptors found in the dermis and epidermis. Select the structures to learn their names and functions.
1.
Using the information learned in this activity, match the following terms to their respective function:
_
c
___ Tactile (Merkel) epithelial cells
__
b
__ Tactile (Meissner’s) corpuscles
__
a
__ Free nerve endings
__
d
__ Lamellar (Pacinian) corpuscles
a. Detect pain, temperature, itch, and tickle
b. Transmit signals related to touch and vibration
c. Transmit signals related to touch
d. Detect light touch, pressure, and vibration
Part 3: Melanin and Melanocytes
●
Open the Integumentary System View "Skin (Dark Pigmentation).
"
Explore melanocytes by reading their definition to learn how melanin and melanocytes are related.
1.
In 1–
2 sentences, describe the role of melanocytes.
Melanocytes produce melanin- the pigment that protects skin from UV damage and determines skin color.
2.
In 1–2 sentences, compare the melanocytes of individuals with darker skin to the melanocytes of individuals with lighter skin.
Individuals with darker skin have more melanocytes compared to individuals with lighter skin who typically have less melanocytes.
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