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Warm – up 8/18-19/2015
- Essentials: stem cell research rubric.- Warm-Up:
- Sit with your group for the debate. You will have 20 minutes to collaborate with each other.
Agenda DOL: Scholars will be able to understand ethically debates around stem
cell research and identify tissue types. Homework: continue reading Chap. 5, Connective tissue IP,
Debate reflection essay (1pg. Double spaced, pen)
- Announcements:- Reflection due and Lab on Thurs/Fri- Connective Tissue IP due Monday- Test August 28th
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HeLa Cellshttps://www.youtube.com/watch?v=y38pgPY6Zq0
A HeLa cell (also Hela or hela cell) is a cell type in an immortal cell line used in scientific research. It is the oldest and most commonly used human cell line.
The line was derived from cervical cancer cells taken from Henrietta Lacks, a patient who eventually died of her cancer on October 4, 1951.
Article on Henrietta Lacks
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HeLa Cells Debate Intro
https://www.youtube.com/watch?v=y38pgPY6Zq0
http://science.howstuffworks.com/life/cellular-microscopic/hela-cell.htm
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Rules of Debate
Timer set for 30 minutes Counts as a quiz grade! Review rubric!
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Debate Reflection
For homework tonight, I want you to write a reflection paper of our debate.
Your responses must be thoughtful and reflective
IB Traits: REFLECTIVE, COMMUNICATOR
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4 types of tissues
1. epithelial tissue 2. connective tissue 3. muscle tissue 4. nervous tissue
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Epithelial tissue includes…
1. layers of cells that cover internal or external surfaces
2. glands
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Some important characteristics are…
1. cells are close together 2. a free surface exposed to environment
or internal chamber/passageway. 3. attachment to basement membrane
provides barrier 4. no blood vessels (avascular) 5. continually replaced and regenerated
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Functions of epithelia…
1. Provide physical protection 2. Control permeability
What comes in and out 3. provide sensation 4. produce specialized secretions
Exocrine= secretions released to surface of skin
Endocrine= secretions released as hormones into tissue fluid & blood
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Warm – up 8/20-21/2015
- Essentials: Epithelial Chart, Cheek cell lab, exit ticket slip - Warm-Up:
- Turn in your reflective essay (staple to rubric)- Label the tissue types (Tissues IP)
Agenda DOL: Scholars will be able to identify epithelial and tissue types by cell
structures. Lab: Cheek cells and epithelial layers
Homework: Tissue Poster Reading Chap. 5, Connective tissue IP
- Announcements:- Quiz Monday- Connective Tissue IP due Monday- Tissue Posters (DUE WEDNESDAY)- Test August 28th / Review on Wednesday
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Epithelial cells are classified by amount of layers and shape…
Simple = one layer
stratified = multiple layers
Pseudostratified = looks like multiple layers
Squamous = thin/flat
Cuboidal = shaped like a cube or hexagon (6)
Columnar = long and skinny
Ciliated = contain cilia
LAYERS SHAPE
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An example…
One layer with tall and skinny cells Simple columnar
Multi-layered and square shaped Stratified cuboidal
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Pseudostratified Ciliated Columnar Location: respiratory tract (nasal cavity,
larynx, trachea, bronchi) Function: cilia moves mucus across the
surface of the cells, protection
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Glands
Endocrine glands – secrete hormones directly into the bloodstream Hormones are chemical messengers that
influence cells in the rest of the body Exocrine glands – use different processes
to release secretions Ex: sweat glands, mammary glands,
salivary glands
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The purposes of Connective Tissue…
Bind (hold things together) Support & protect Fill spaces Store fat Produce blood cells
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Locations: Widely distributed throughout the
body Facts:
Good blood supply Farther apart than epithelial cells Connected with matrix
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Exit Tickets
1. a single layer of cells that are thin and flat are called:2. a multi-layered group of cells that are long and skinny are:3. a single layer of square cells4. What connective tissue is responsible for storage of energy?
SHOUT OUTS!
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Warm – up 8/20-21/2015
- Essentials: Types of epithelial tissue, sheet of legal paper, quiz sheet, Tissue review packet (1per table) CLASS SET!
- Warm-Up: - At your table review types of tissues and their function. 5 minutes- QUIZ TODAY!
Agenda DOL: Scholars will be able identify tissue types and relate its structure to function by location.
Homework: Tissues posters (quiz grade)
- Announcements:- Test August 28th
- Test review Wednesday come prepared!
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Classification of Connective Tissue1. Connective tissue proper
a. Loose connective tissuei. Areolarii. Adiposeiii. Reticular
b. Dense connective tissue
2. Supporting connective tissuea. Cartilageb. Bone
3. Fluid connective tissuea. Blood
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1.a. Loose Connective Tissue lies under skin, connect it to organs,
provides blood supply The body’s “packing material”
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1.a.i. Areolar
Function: Protects tissues and organs, binds epithelia to deeper tissue
Location: dermis (skin)
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1.a.ii. Adipose
Function: stores energy, insulates & cushions
Location: subcutaneous layer (deep to skin), surrounding organs
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1.a.iii. Reticular
Function: provides support to lymphatic system organs
Location: spleen, lymph nodes, thymus, bone marrow
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1.b. Dense Connective Tissue very STRONG, used to bind parts
together Function: attaches bone to bone
(ligaments), muscle to bone (tendon) Location: ligaments, tendons
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1.b. Dense Connective Tissue
Ligaments Connects BONE to BONE
Tendons Connect MUSCLES to bone
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2.a. Cartilage
Function: Protects, absorbs shock (in joints)
Location: tip of nose, ends of long bones, intervertebral discs, external ear
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2.b. Bone
very rigid, heals quicker than cartilage Function: provides support (more than
cartilage) and levers for movement Location: bones of the body
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3.a. Blood
Function: helps transport and maintain internal environment
Location: blood vessels, heart
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Tissue Rotations and Cheek cell Lab
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Station Expectations
One group at each station 2 min at each station Rotate clockwise
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Tissue Posters
Four types of tissue Location of tissue Purpose/function of each tissue Classification of tissue Memory Device (How you will remember each
type) Drawing of each type of tissue Creativity/color Neatness
This will count as a quiz grade!
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