Tissues & Cancer

Types of Membranes, Muscular Tissue, & Nervous TissueSection 5.4-5.6

Epithelial Membranes

Thin, sheet-like structures composed of epithelium and underlying connective tissue covering body surfaces and lining body cavities

Major Types of Membranes Serous Mucous Cutaneous

Serous Membrane

Lines body cavities that lack openings to the outside Cover internal organs

Simple squamous epithelial cells and a thin layer of loose connective tissue

Secrete watery serous fluid

Mucous Membrane Lines cavities and tubes that open to

the outside of the body Including the oral and nasal cavities &

digestive, respiratory, urinary, and reproductive systems

Some cells secrete mucus

Cutaneous Membrane

The skin Many layers of

epithelial cells to provide a barrier

Muscle Tissues

Elongated cells that can contract by shortening

Moves body parts 3 types of muscle tissue:

Skeletal Smooth Cardiac

Skeletal Muscle Tissue

Found in the muscles that attach to bones

Called voluntary muscle tissue

Long, threadlike cells that have striations

Many nuclei in 1 cell Stimulated to contract by

nerve signals

Smooth Muscle Tissue

No striations Shorter, spindle

shaped with a single, central nucleus

Makes up hollow internal organs (stomach, intestine, uterus, bladder, blood vessels)

Involuntary muscles

Cardiac Muscle Tissue

Only found in the heart Involuntary muscle Striated branched cells joined end to

end to form an intricate network Single nucleus in each cell

Nervous Tissue

Found in the brain, spinal cord, and peripheral nerves

Made up of neurons (nerve cells) that transmit impulses to communicate with other tissues in the body

Also made up of neuroglial cells that support neurons by binding to them and supplying them with nutrients

Nervous Tissue