Anatomy Practical (connective tissue & muscles)

bone

-Dense, hard connective tissue composing the skeleton, -dark circle in the center is the central canal

-dark circles surrounding are osteocytes sitting in cavities called lacunae

Cartilage

-3 types

-hyaline, fibrocartilage, and elastic cartilage

hyaline cartilage

-found on trachea, ribs, and breast bone

-covers bone ends at joints

-blue-white appearance

-its cells are called chondrocytes

Fibrocartilage

-cartilage that contains fibrous bundles of collagen, such as that of the

-found in the intervertebral disks in the spinal cord.

elastic cartilage

-external ear

dense connective tissue (dense fibrous tissue)

-main matrix element is collagen fiber

-creates tendons and ligaments

-located in the dermis—lower layers of the skin

areolar connective tissue

-function: holds internal organs together

-location: widely distributed under epithelia of body and all mucus membranes

- dark lines are collagen fibers

adipose tissue

-tissue that stores fat, insulates the body

-forms subcutaneous tissue beneath the skin

-macromolecule: lipids

reticular connective tissue

-forms stroma of organs

-supports white blood cells, also known as lymphocytes (the dark purple dots)

skeletal muscle tissue

-function: Voluntary movement

-location: In skeletal muscles attached to bones or occasionally to skin.

cardiac muscle

-location: heart wall

-function: allows the heart to pump blood

-contains junctions known as intercalated disks

smooth muscle

-no striations visible

-location: walls of stomach, uterus, and blood vessels

-function: contracts to mix or propel substances through the organ along a specific pathway

nervous tissue

-function: carries electrical messages back and forth between the brain and every other part of the body (irritability and conductivity)

-location: brain and spinal cord

-contains a special group of supporting cells known as neuroglia (dots surrounding large dark areas)

collagen

Fibrous protein that gives the skin form and strength

blood

-transports of respiratory gases, nutrients, wastes, and other substances through the circulatory system

-contains blood cells