Daily Warm-up Wednesday, October 29th What is the epithelial tissue below? HW: -Read section on muscles (pg. 148-151)

Cell that line blood vessels, air sacs, and lymph vessels must allow substances to easily pass through them. These epithelial cells are typically Simple squamous Psuedostratified columnar Stratified cuboidal

Glandular Epithelium Composed of cells that are specialized to produce and secrete substances There are two (2) types: Endocrine glands are ductless (key word: hormone) Exocrine glands have ducts Unicellular exocrine gland: Composed of one cell Goblet cell Multicellular exocrine gland: Composed of many cells Sweat glands, salivary glands, etc. Simple and compound

Structural Types of Exocrine Glands Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Tissue surface Duct Secretory portion Simple tubular Simple branched tubular Simple coiled tubular Simple branched alveolar Compound tubular Compound alveolar

Types of Glandular Secretions Merocrine Glands Fluid product Salivary glands Pancreas gland Sweat glands Apocrine Glands Portions of cells Mammary glands Ceruminous glands (earwax) Holocrine Glands Whole cells Sebaceous glands (oil) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Pinched off portion of cell (secretion) Disintegrating cell and its contents (secretion) Intact cell Secretion New cell forming by mitosis and cytokinesis (a) Merocrine gland (b) Apocrine gland (c) Holocrine gland

Which type of gland secretes sweat? Endocrine Exocrine

Muscle Tissues Skeletal muscle General characteristics: Smooth muscle Attached to bones Striated Voluntary General characteristics: Muscle cells also called muscle fibers Contractile Three (3) types: Skeletal muscle Smooth muscle Cardiac muscle Smooth muscle Walls of organs Skin Walls of blood vessels Involuntary Non-striated Cardiac muscle Heart wall Involuntary Striated Intercalated discs

Muscle Tissue Skeletal Muscle Smooth Muscle Cardiac Muscle Striations Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Striations Cytoplasm Nuclei Nucleus Portion of a muscle fiber (a) (b) (a) (b) b: © The McGraw-Hill Companies, Inc./Dennis Strete, photographer b: © The McGraw-Hill Companies, Inc./Al Telser, photographer Skeletal Muscle Smooth Muscle Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Striations Nucleus Intercalated disc (a) (b) b: © The McGraw-Hill Companies, Inc./Al Telser, photographer Cardiac Muscle

What words describe skeletal muscle? Voluntary and nonstriated Voluntary and striated Involuntary and nonstriated