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)

4 types of tissues 1. epithelial tissue 2. connective tissue 3. muscle tissue 4. nervous tissue

Epithelial tissue includes… 1. layers of cells that cover internal or external surfaces 2. glands

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

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

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

An example… One layer with tall and skinny cells Simple columnar Multi-layered and square shaped Stratified cuboidal

Pseudostratified Ciliated Columnar Location: respiratory tract (nasal cavity, larynx, trachea, bronchi) Function: cilia moves mucus across the surface of the cells, protection

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

Station Expectations One group at each station 2 min at each station Rotate clockwise

The purposes of Connective Tissue… Bind (hold things together) Support & protect Fill spaces Store fat Produce blood cells

Locations: Facts: Widely distributed throughout the body Good blood supply Farther apart than epithelial cells Connected with matrix

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

1.a. Loose Connective Tissue lies under skin, connect it to organs, provides blood supply The body’s “packing material”

1.a.i. Areolar Function: Protects tissues and organs, binds epithelia to deeper tissue Location: dermis (skin)

1.a.ii. Adipose Function: stores energy, insulates & cushions Location: subcutaneous layer (deep to skin), surrounding organs

1.a.iii. Reticular Function: provides support to lymphatic system organs Location: spleen, lymph nodes, thymus, bone marrow

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

1.b. Dense Connective Tissue Ligaments Connects BONE to BONE Tendons Connect MUSCLES to bone

2.a. Cartilage Function: Protects, absorbs shock (in joints) Location: tip of nose, ends of long bones, intervertebral discs, external ear

2.b. Bone very rigid, heals quicker than cartilage Function: provides support (more than cartilage) and levers for movement Location: bones of the body

3.a. Blood Function: helps transport and maintain internal environment Location: blood vessels, heart

Flashcards Make Flashcards for the types of Epithelial and Connective Tissue FRONT BACK Name of tissue Function Picture

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?