Chapter 5 Body Tissues And Organization Part I Flashcards
PerForm specialized functions
Tissues
Made of cells
Tissues
How many different kinds of cells
200
How are cells organized
Into 20 different tissue types
Made of two or more tissues
Organs
Made of several different organs
Organ system
Product of coordinated functioning about organ systems
Organism
The tissues have distinct shapes
Organs
PerForm one or few specific functions
Organs
Performs related coordinated function
Organ system
Formed from about 20 different tissue
Primary tissues
What are the primary tissues
Epithelial
Connective
Muscular
Nervous
When does the formation of primary tissues begin
During embryo formation
What are very early developed in formation of primary tissues
3 germinal layers
What are the three germinal layers
Ectoderm
Mesoderm
Endoderm
Outermost germinal layer
Ectoderm
Middle germinal layer
Mesoderm
Inner germinal layer
Endoderm
Epithelial tissues and most organ systems are produced from..
Two or more germinal layers
Composed of closely packed, regular shaped, connected cells
Epithelial tissue
Little extracellular space
Epithelial tissue
What connects the cells to the tissue
Basement membrane
Function of epithelial tissue
Forms a protective surface layer
On what do cells in epithelial tissue depend on and why
Diffusion because no blood vessels pass through the epithelial
How are cells connected
By specialized structures
In basement membrane; binds cells
Intercellular cement
Prevent material from diffusing between cells lining
Tight junctions
Common in skin; consists of disks
Spot desmosomes
What are the two major categories of epithelial
Covering and lining epithelia
Glandular epithelia
Where are covering and lining epithelia found
covering body surfaces Lining passageways; throat, intestines , vessels Lining body cavities Covering organs Forming hair and nails
On How are the different types of covering and lining epithelial based
Number of cell layers and shape
What are the types of covering and lining epithelia
Simple epithelia Stratified epithelia Squamous epithelia Cuboidal epithelia Columnar epithelia
What are the types of epithelia that form multicellular glands
Exocrine
Endocrine
With tubes or ducts
Exocrine
Without tubes or ducts
Endocrine
Located in passageways or cavities to body surface
Exocrine glands
Diffuse into blood vessels
Endocrine glands
Secretes products of the endocrine system
Hormones
Regulates and coordinates organ system
Hormones
How secretion is discharged from the gland
Exocrine
Type of exocrine glands
Apocrine
Holocrine
Merocrine
Apex or tip of cell breaks off; sweat glands
Apocrine
Whole cell ruptures open; sebaceous gland (oil)
Holocrine
Secretor, diffuses out of cell, no damage to cell; salivary glands
Merocrine
What is the most abundant gland
Merocrine
Epithelium of skin Lining of mouth anus nostrils Sweat and sebaceous glands Epidermal derivative Nervous system Epithelial parts of eyes nose ear
Ectoderm
Muscles Skeleton Blood Lining of blood vessels Dermis of skin and Dentin of teeth Organs of excretory and reproductive Connective tissue
Mesoderm
Lining of digestive and respiratory systems Secretory parts of pancreas and liver Urinary bladder Lining of urethra Thyroid, parathyroid, thymus
Endoderm
