ch 5 muscle tissue nervous tissue. three types of muscle tissue: skeletal smooth cardiac muscle...

Ch 5 Muscle TissueNervous Tissue

Three types of Muscle Tissue:• Skeletal • Smooth• Cardiac

Muscle tissues can CONTRACT when stimulated, thereby causing body movement

Skeletal Muscle Tissue• Attached to bone• Controlled consciously• Thread-like cells are striated (light-dark)• Cells are multinucleated

Ex. All body muscle which allows movement

http://waukesha.uwc.edu/lib/reserves/pdf/zillgitt/zoo234/diagrams/unit%201/ZOO%20234%20Skeletal%20Muscle%20Tissue.jpg

Smooth Muscle Tissue• Involuntary Actions- not conscious• Short, spindle shaped cells• NOT striated• Single nucleus/cell

Ex. Walls of hollow organs (stomach, intestine, uterus, blood vessels, urinary bladder)

• http://waukesha.uwc.edu/lib/reserves/pdf/zillgitt/zoo234/diagrams/unit%201/ZOO%20234%20Skeletal%20Muscle%20Tissue.jpg

Cardiac Muscle Tissue• ONLY in the Heart• Involuntary movement• Cells STRIATED and BRANCHING• One nucleus/cell• Cells joined end-to-end like boxcars

– Intercalated disc=area where cells attach to each other

Nervous Tissue

• Brain• Spinal Cord• Peripheral Nerves

Coordinate, Regulate and Integrate many body functions.

Nerve Cells (Neurons)• Sense changes in their surroundings• Transmit impulses along cytoplasmic

extensions (processes) to:–Other neurons–Muscles–Glands

Neuroglial Cells

• Support & Bind Nervous Tissue• Phagocytic• Supply nutrients to Neurons

(connecting neurons to blood supply)

Epithelial Membranes• Epithelial tissue and Connective

tissue that form sheet-like membranes that cover body surfaces and line body cavities (a type of ORGAN)

Three types of Epithelial Membranes:Serous, Mucous, and Cutaneous

• Serous Membranes:–Line cavities that lack openings to

outside & cover their organs•Thoracic Cavity•Abdomenopelvic Cavity

–Secretes serous fluid•Lubricates surfaces

Mucous Membranes• Lines Cavities and Tubes that OPEN

to OUTSIDE of body• Oral Cavity• Nasal Cavity• Digestive, Respiratory, Urinary and

Reproductive Tubes

Cutaneous Membrane

•SKIN

Connective Tissue Membrane

•Synovial Membrane–Lines Joints