1. Warm – up /24-25/2015
Essentials: Interactive Notebooks, Quiz Sheets, Test
Warm-Up:
I. Go over test and questions missed, reflect on your progress in the class. Come up with 2 goals and questions for yourself and Ms. Hervey.
II. Answer question on following page
Agenda
SWBAT: SWBAT explain the purpose of the integumentary system, the types of membranes, and the layers of the skin
Homework: Test Corrections
Announcements:
Test Corrections due Friday
Quiz
35mins post class start…..40 mins deep

2. What is the most important takeaway you have from this past unit
What is the most important takeaway you have from this past unit? What will you still remember in 2-4 years?
How did your performance on this test compare to how you expected to do?
What did you do well in preparation for this test? Did you do anything different from how you studied for the quizzes? What can you still improve upon for next test?
What study skills did you utilize in preparing for this test? Which were most effective?
What did Ms. Hervey do well to prepare you?
What can Ms. Hervey do differently to prepare you?
Unit 1 Reflection

3. Test Corrections Correct Answer Why it is correct
You will receive half points lost
I.e = 80% on test, complete test corrections
20pts lost = 10 pts gain
NEW GRADE 90%
Test Corrections

4. What type of cells make up the outermost layer of our skin?
Why do we have skin? List 2 purposes that you can come up with…
List 3 components of the Integumentary system
What are the integumentary accessory organs and how do they function
Warm Up

5. QUIZ 5

6. Why is it important to learn about the integumentary system
Why is it important to learn about the integumentary system? Write 2 things in your notes that would be helpful to know about this body system
Before we get started…

7. A few definitions… Epi- PREFIX upon, on top of Hypo- PREFIX under
Derm- PREFIX skin
Membrane- A thin layer of tissue that covers surfaces or separates regions, structures, or organs of an animal or a plant
Keratin – protein that strengthens the epidermis
A few definitions…

8. 4 different types:
1. Serous membranes = line body cavities that are not open to the surface.
WHY? Keeps things in place, lubricates
Example: A serous membrane lines the abdominal cavity.
Insane in the membrane

9. 2. Mucous membranes = Line body cavities that open to the surface.
WHY? Lubricates, traps and prevents the entry of objects.
Examples: Mucous membranes line the nasal, oral, digestive, urinary, and reproductive cavities.
Insane in the membrane

10. 3. Synovial membranes= line the joints
WHY? Produces fluids to lubricate the joints
Examples: Synovial membranes can be found in your knees and shoulders.
Insane in the membrane

11. 4. Cutaneous membranes= skin
WHY? (see next section)
Example: Your skin is a cutaneous membrane composed of stratified squamous epithelial cells & connective tissue
Insane in the membrane

12. Keep my joints from grinding into each other
Protect my body from bacteria entering through the nose.
Keep my lungs from jamming into my ribs
Keep out bacteria from entering through the surface
Produce snot
Please identify what type of membrane would be used for each of these purposes: CFU

13. Answers… Keep my joints from grinding into each other
Synovial membrane
Protect my body from bacteria entering through the nose.
Mucous membrane
Keep my lungs from jamming into my ribs
Serous membrane
Keep out bacteria from entering through the surface
Cutaneous membrane
Produce snot
Answers…

14. 2. regulates body temperature 3. prevents water loss
1. protective covering
2. regulates body temperature
3. prevents water loss
4. Houses sensory receptors
5. synthesizes various biochemicals (vitamin D)
So Why do we have skin??

15. regulates body temperature prevents water loss
protective covering
regulates body temperature
prevents water loss
Houses sensory receptors
synthesizes various biochemicals (vitamin D)
So Why do we have skin??

16. Layers of the Cutaneous Membrane
Epidermis : top layer made of stratified squamous epithelial cells.
Used for protection. Indents of it make hair and nails
No blood vessels
Layers of the Cutaneous Membrane

17. Come Let’s Get Sun Burned MAKE UP YOUR OWN ACRONYM

18. 5 Layers of the Epidermis
Most superficial Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum basale Most deep

19. Stratum corneum Top layer of skin
20-30 layers of dead, keratinized cells
Provide a barrier due to thickened surface

20. Stratum lucidum
Only found in “thick skin” (palms of hands/soles of feet)

21. Stratum granulosum Where keratinization begins
Cells fill up with keratin cell starts to die

22. Stratum spinosum
Contain keratinocytes – most abundant cell type in epidermis
Contain immune cells that help fight infection

23. Stratum basale Deepest layer of the epidermis Contain keratinocytes
Contain melanocytes – produce melanin which affects skin color
Contain tactile cells – sensitive to touch and provide sensory signals to brain

26. Thick skin is only found on your palms, soles of feet, and tips of fingers and toes
Contains all 5 layers of epidermis
Does not contain hair follicles
Thin skin is found everywhere else
Contains only 4 layers (no stratum lucidum)
Thick vs. Thin Skin

27. Skin Color All people have about the same number of melanocytes
But, melanocyte activity and color of melanin varies
UV light stimulates melanocytes to make more melanin
Skin Color

28. Freckles represent an increase in melanocyte activity

29. Friction Ridges Most commonly known as fingerprints
Found on the fingers, palms, soles, and toes
Due to folds in dermis and epidermis
Increase friction so we can better grasp objects and possibly increase skin’s flexibility
Each individual has a unique pattern of friction ridges
Friction Ridges

31. https://quizlet.com/90757468/flashcards

32. Create a Visual Diagram of the Layers of the Epidermis
Leave room for more layers to be added below and structures within/to the side
Include all 5 layers and label
Include definitions and example(s) of each
Create a Visual Diagram of the Layers of the Epidermis
Create flashcards/study tool for the 4 types of membranes

33. Homework Test Corrections and flashcards.
These cards may be used on the test.
Homework