Chapter 8 Flashcards
Tissue
Group of similar cells that perform a common function
Matrix
Nonliving intercellular material
4 types of tissue
Epithelial
Connective
Muscle
Nervous
Structure of Epithelial tissue
One or more layers of cells arranged with little extra cellular matrix (sheets or glands)
Function of Epithelial tissue
Covers and protects body surface
Lines body cavities
(Absorption,secretion,excretion)
Structure of Connective tissue
Scattered and thin cells
Surrounded by extracellular matrix
Function of Connective tissue
Supports body structures
Transports substances throughout body
Structure of Muscle tissue
Long fiberlike cells
Capable of pulling loads
(Sometimes branched)
Function of Muscle tissue
Produces body movements and heart
Produces movements of organs
Structure of Nervous tissue
Mixture of many cells including neutrons and neuroglia
Function of Nervous tissue
Communication between body parts
Integration/regulation of body functions
Neurons
Conducting cells
Neuroglia
Supporting cells
3 Germ layers
Ectoderm
Mesoderm
Endoderm
Ectoderm
Epidermis of the skin
Tooth enamel,nasal cavity,facials bones
Mesoderm
Dermis of the skin
Circulatory system, glands,kidneys
Endoderm
Lining of (Lungs, gastrointestinal tract, bladder, medulla)
Collagen
Strong, flexible protein fiber
Elastin
Elastic fibers
Keloid
Thick scar that develops in the lower layer of skin
Cutaneous membrane
Skin
Accounts for 16% of body weight
Serous membrane
Epithelial sheet and Connective tissue layer
Secrete a thin, watery fluid that lubricates organs
Pleura
Surrounds each lung and lines thoracic cavity
Peritoneum
Lines abdominal cavity
Mucous membranes
Line body surfaces opening directly to the exterior
Membranes lining respiratory,digestive,urinary,reproductive
Linings
Produce a film of mucus that coats and protects underlying cells
Lubricates food through digestive tract
Traps contaminants and performs other functions
3 types of tissue tumours
Epithelial
Connective
Miscellaneous
