Warm – up
8/18-19/2015
Essentials: stem cell research rubric.
Warm-Up:
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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:
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Reflection due and Lab on Thurs/Fri
Connective Tissue IP due Monday
Test August 28th
HeLa Cells
https://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
HeLa Cells Debate Intro
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
https://www.youtube.com/watch?v=y38pg
PY6Zq0
http://science.howstuffworks.com/life/cellularmicroscopic/hela-cell.htm
Rules of Debate
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Timer set for 30 minutes
Counts as a quiz grade!
Review rubric!
Debate Reflection
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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
4 types of tissues
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1. epithelial tissue
2. connective tissue
3. muscle tissue
4. nervous tissue
Epithelial tissue includes…
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1. layers of cells that cover internal or external
surfaces
2. glands
Some important characteristics are…
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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
Functions of epithelia…
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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
Warm – up
8/20-21/2015
Essentials: Epithelial Chart, Cheek cell lab, exit ticket slip
Warm-Up:
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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
Epithelial cells are classified by amount
of layers and shape…
LAYERS
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Simple = one layer
stratified = multiple
layers
Pseudostratified =
looks like multiple
layers
SHAPE
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Squamous = thin/flat
Cuboidal = shaped
like a cube or hexagon
(6)
Columnar = long and
skinny
Ciliated = contain cilia
An example…

One layer with tall and skinny cells
 Simple

columnar
Multi-layered and square shaped
 Stratified
cuboidal
Pseudostratified Ciliated Columnar
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Location: respiratory tract (nasal cavity, larynx,
trachea, bronchi)
Function: cilia moves mucus across the surface of the
cells, protection
Glands
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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
The purposes of Connective Tissue…
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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
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 cells
4. What connective tissue is responsible for storage of
energy?
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SHOUT OUTS!
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:
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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!
Classification of Connective Tissue
Connective tissue proper
1.
Loose connective tissue
a.
i.
ii.
iii.
b.
Areolar
Adipose
Reticular
Dense connective tissue
Supporting connective tissue
2.
a.
b.
Cartilage
Bone
Fluid connective tissue
3.
a.
Blood
1.a. Loose Connective Tissue
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lies under skin, connect it to organs, provides blood
supply
The body’s “packing material”
1.a.i. Areolar
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Function: Protects tissues and organs, binds epithelia
to deeper tissue
Location: dermis (skin)
1.a.ii. Adipose
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Function: stores energy, insulates & cushions
Location: subcutaneous layer (deep to skin),
surrounding organs
1.a.iii. Reticular
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Function: provides support to lymphatic system
organs
Location: spleen, lymph nodes, thymus, bone marrow
1.b. Dense Connective Tissue
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very STRONG, used to bind parts together
Function: attaches bone to bone (ligaments), muscle
to bone (tendon)
Location: ligaments, tendons
1.b. Dense Connective Tissue

Ligaments
 Connects

BONE to BONE
Tendons
 Connect
MUSCLES to bone
2.a. Cartilage
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Function: Protects, absorbs shock (in joints)
Location: tip of nose, ends of long bones,
intervertebral discs, external ear
2.b. Bone
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very rigid, heals quicker than cartilage
Function: provides support (more than cartilage)
and levers for movement
Location: bones of the body
3.a. Blood
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
Function: helps transport and maintain internal
environment
Location: blood vessels, heart
Tissue Rotations and Cheek cell Lab
Station Expectations
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One group at each station
2 min at each station
Rotate clockwise
Tissue Posters
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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!