Chapter 4- Tissues Flashcards
Membrane
protective tissue surrounding internal organs, produces fluids
4 major types of tissues
Epithelial, Muscle, Nervous, Connective
Epithelial Tissue
Tightly packed cells, surrounds body surface (skin), lines body cavities (blood vesicles, intestinal tract), covers and lines
Squamous
Flat
Cuboidal
Cube shaped
Columnar
Long, column shaped
Stratified Layer
Simple: one layer
Stratified: two or more layers
Pseudo-stratified: looks like multiple layers, but is only one
Basement Membrane
Thin layer of connective tissue that attaches to Epithelial Tissue to other tissues
Muscle Tissue
Packed tightly, 3 types (skeletal, smooth, cardiac), can only contract (get shorter) and relax
Skeletal
Bones, multiple nucleus, striations indicate relative strength, parallel grooves
Smooth
No striations, not as strong as skeletal but NOT weak, involuntary movements
Cardiac
Single nucleus, heart, is branched, cells are fused together
Nervous Tissue
Involved in communication, tightly packed, Neurons make up a majority of the tissue, Cell Body contains organelles, Dendrites can generate an electrical charge (some), all can transmit impulses, Neurons associated with the senses can generate an electrical impulse
Neuroglia
Number of Neurons, support and protection, some produce cerebrospinal fluid (inside the brain and spine)
Internal Membranes/Serosa
Surrounds organs and produces fluid, fluid prevents friction and organ movement, Heart is surrounded by the Pericardial, Lungs are surrounded by the Pleura, Abdomino-pelvic (small and large intestines) is surrounded by the Peritoneum
