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Published byAbigayle Craig Modified over 6 years ago
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Do Now 8/18/14 What body cavity contains the reproductive organs? Be as specific as possible. What are the two main divisions of body cavities? The patellar region is ________ to the tarsal region. (medial/lateral/proximal/distal) The thoracic region is ________ to the femoral region. (anterior/posterior/superior/inferior) The nose is _______ to the ear. (medial/lateral/proximal/distal)
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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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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
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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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Station Expectations One group at each station 2 min at each station
Rotate clockwise
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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: Facts: Widely distributed throughout the body
Good blood supply Farther apart than epithelial cells Connected with matrix
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Classification of Connective Tissue
Connective tissue proper Loose connective tissue Areolar Adipose Reticular Dense connective tissue Supporting connective tissue Cartilage Bone Fluid connective tissue 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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Flashcards Make Flashcards for the types of Epithelial and Connective Tissue FRONT BACK Name of tissue Function Picture
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Exit 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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