Tissue Flashcards
Tissue
Group of specialized cells that are similar in structure and function
4 basic types
epithelial
connective
muscle
nerve
Epi-
upon, on, or over
Epithelial tissue
serves as the outer covering for external and internal body surfaces
Main function of epithelial tissue
protect, absorb, secrete
where to find epithelial tissue
skin
mucus membranes
digestive, respiratory, urinary tract
Endothelium
lines the heart, blood and lymph vessels and other serous body cavities
mesothelium
covers serous membranes such as the pleura (lung cavity) pericardium and peritoneum (lining of the abdominal cavity) and produces a lubricating fluid
connective tissue
most widespread and forms the framework for the body
connective tissue function
holds organs in place and connects body parts together
7 types of connective tissue
bone cartilage dense fibrous reticular tissue loose ordinary adipose hematopoietic
bone
hard and unbendable, supports and protects the body
cartilage
firm but bendable
dense fibrous
strong and bendable, found mostly in tendons and ligaments
reticular tissue
found in weblike networks supports nerves and capillaries provides support for spleen, lymph nodes and bone marrow
loose, ordinary
elastic and stretchable, connects adjacent body structures
adipose
fatty tissue, pads and protects organs, stores excess fat and insulates body
hematopoietic
blood forming and blood vessel tissue
3 types of muscle tissue
skeletal muscle
smooth muscle
cardiac
skeletal muscle
striated and voluntary (biceps, pectorals)
smooth muscle
non-striated and involuntary found in the walls of hollow internal structures (blood, vessels, intestine)
cardiac
striated and involuntary (heart)
fibers
muscle cells
long and slender
nervous tissue
most specialized tissue in the body
has higher oxygen and nutritional requirements
brain is 2% of bodyweight/20% of energy used
nerve tissue composition
composed of nerve cells (neurons) nerve fibers, and supporting tissues to keep cells in place
